2017

学会発表

Kenichi Iga, Akinori Nishihara. "Invention of a Temperature-Insensitive Quartz Oscillation Plate, 1933". The 5th History of Electro-Technology Conference. IEEE HISTELCON 2017. Aug.. 2017.
Fumio Koyama. "High Power VCSEL Amplifier For Laser Processing". The 12th Conference on Lasers and Electro-Optics Pacific Rim. 1-3G-1. Aug.. 2017.
Shanting Hu, Akihiro Matsutani, Fumio Koyama. "VCSELs Laterally Coupled with a Slow Light Modulator/Amplifier Showing Unidirectional Coupling". International Nano-Optoelectronics Workshop 2017. WeP. Aug.. 2017.
Fumio Koyama. "VCSEL photonics for 3D imaging". International Nano-Optoelectronics Workshop 2017. SaB1. Aug.. 2017.
Shanting Hu, Akihiro Matsutani, Fumio Koyama. "Unidirectional Coupling Of Laterally Coupled VCSEL And Slow Light Modulator/Amplifier". The 12th Conference on Lasers and Electro-Optics Pacific Rim. P3-125. Aug.. 2017.
Fumio Koyama. "VCSEL Photonics For Non-mechanical LiDAR". The 12th Conference on Lasers and Electro-Optics Pacific Rim. Aug.. 2017.
Masanori Nakahama, Shunya Inoue, Shun Nishimura, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "Sub-volt Wavelength Sweep Operation Of MEMS VCSEL Employing High-Q Mechanical Resonanc". The 12th Conference on Lasers and Electro-Optics Pacific Rim. 2-1N-5. Aug.. 2017.
Keisuke Shimura, Zeuku Ho, Masanori Nakahama, Xiaodong Gu, Akihiro Matsutani, Fumio Koyama. "Non-mechanical Beam Scanner Integrated VCSEL For Solid State LiDAR". The 12th Conference on Lasers and Electro-Optics Pacific Rim. 2-2G-3. Aug.. 2017.
Hameeda Ibrahim, Fumio Koyama, Moustafa Ahmed. "Large Signal Modultion Analysis Of High-speed Transverse Coupled Cavity VCSELs". The 12th Conference on Lasers and Electro-Optics Pacific Rim. 1-4N-6. Aug.. 2017.
Zeuku Ho, Keisuke Shimura, Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "High-resolution Beam Steering Of Slow Light VCSEL Amplifier". The 12th Conference on Lasers and Electro-Optics Pacific Rim. 2-1G-5. Aug.. 2017.
Hameeda Ibrahim, Moustafa Ahmed, Fumio Koyama. "Enhancing the modulation bandwidth of double transverse coupled cavity VCSELs". The 64rd JSAP Spring Meeting,2017. 15p-422-7. Mar.. 2017.
Ahmed Mohamed Ahmed Hassan, Moustafa Ahmed, Masanori Nakahama, Fumio Koyama. "Numerical analysis of high output slow light VCSEL amplifier". The 64rd JSAP Spring Meeting,2017. 15p-422-2. Mar.. 2017.
Shanting Hu, Xiaodong Gu, Fumio Koyama. "Electro-absorption Modulator Integrated with Transverse Coupled Cavity VCSELs". The 64rd JSAP Spring Meeting,2017. 15p-422-8. Mar.. 2017.

2016

論文

Tomotaka Nagashima, Gabriella Cincotti, Takuya Murakawa, Satoshi Shimizu, Makoto Hasegawa, Kuninori Hattori, Masayuki Okuno, Shinji Mino, Akira Himeno, Naoya Wada, Hiroyuki Uenohara, Tsuyoshi Konishi. "Cost effective all-optical fractional OFDM receiver using an arrayed waveguide grating". Optical Fiber Technology,. vol. 32, pp. 119-122. 2016.
Tetsu Gi, Tomoyuki Miyamoto. "Shape control of AlGaAs selective oxidation by intermixing method". Japanese Journal of Applied Physics. vol. 55, no. 11. Sep.. 2016.
Yohei Aikawa, Hiroyuki Uenohara. "Proposal and analytical investigation of optical comparator for optical and electrical converted Viterbi-decoding scheme". Electronics Letters. Vol. 56, No. 16. Aug.. 2016.
Shouhei Moriwaki, Minoru Saito, Tomoyuki Miyamoto. "Quantum well intermixing technique using proton implantation for carrier confinement of vertical-cavity surface-emitting lasers". Japanese Journal of Applied Physics. vol. 55, no. 8S3. Jul.. 2016.
Yohei Aikawa, Hiroyuki Uenohara. "Numerical investigation of all-optical forward-error-correction coding scheme with convolutional code". IEEE Photonics Journal. Vol. 9, No. 2. Apr.. 2016.

学会発表

Fumio Koyama. "VCSEL Photonics for Optical Interconnects". 21st MICROOPTICS CONFERENCE,MOC2016. 12C-3. Oct.. 2016.
Hameeda Ibrahim, Ahmed Mohamed Ahmed Hassan, Fumio Koyama. "Modulation Bandwidth Enhancement of Double Transverse Coupled Cavity VCSELs". ,MOC2016. 21st MICROOPTICS CONFERENCE. 13A-7. Oct.. 2016.
Tetsu Gi, Tomoyuki Miyamoto. "Shape control of AlAs selective oxidation by intermixing of GaAs/AlAs hetero-interface". 21st Microoptics Conference (MOC2016). Oct.. 2016.
Yuki Komori, Tomoyuki Miyamoto. "Numerical analysis of effect of transverse mode of phase locked VCSEL array using Talbot effect". 21st Microoptics Conference (MOC2016). Oct.. 2016.
Naoki Jogan, Junichiro Hayakawa, Takashi Kondo, Akemi Murakami, Jun Sakurai, Xiaodong Gu, Fumio Koyama. "Temperature Characteristics of Photo Detector Integrated Transverse-Coupled-Cavity VCSELs". 25th International Semiconductor Laser Conference, ISLC 2016. WE9. Sep.. 2016.
Masanori Nakahama, Xiaodong Gu, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "VCSEL-Based High Resolution Wavelength Demultiplexer with Large Optical Gain". 25th International Semiconductor Laser Conference, ISLC 2016. TuD5. Sep.. 2016.
Takashi Kondo, Junichiro Hayakawa, Naoki Jogan, Akemi Murakami, Jun Sakurai, Xiaodong Gu, Fumio Koyama. "Temperature Dependence of Small Signal Response of 850 nm Transverse-Coupled-". 25th International Semiconductor Laser Conference, ISLC 2016. TuD3. Sep.. 2016.
Yohei Aikawa, Hiroyuki Uenohara. "Experimental Demonstration of All-Optical FEC Coding Scheme with Convolutional Code using Single Signal Source". 42nd European Conference on Optical Communications (ECOC2016). Sep.. 2016.
Yuki Komori, Tomoyuki Miyamoto. "Influence of wavelength deviation on phase locked VCSEL array using Talbot effect". The 21st OptoElectronics and Communications Conference (OECC2016). Jul.. 2016.
Shohei Oshida, Masashi Suhara, Tomoyuki Miyamoto. "Low thermal resistance VCSEL array adopted tunnel junction destruction using proton implantation". The 21st OptoElectronics and Communications Conference (OECC2016). Jul.. 2016.
Tomotaka Nagashima, Gabriella Cincotti, Takuya Murakawa, Satoshi Shimizu, Makoto Hasegawa, Kuninori Hattori, Masayuki Okuno, Shinji Mino, Akira Himeno, Naoya Wada, Hiroyuki Uenohara, Tsuyoshi Konishi. "Cost Effective Fractional OFDM Receiver Using arrayed waveguide grating". 21th Optoelectronics and Communication Conference and International Conference on Photonics in Switching 2016 (OECC/PS2016). Jul.. 2016.
Motoki Hiraoka, Tomotaka Nagashima, B. Karanov, Gabriella Cincotti, Satoshi Shimizu, Takuya Murakawa, Makoto Hasegawa, Kuninori Hattori, Masayuki Okuno, Shinji Mino, Akira Himeno, Naoya Wada, Hiroyuki Uenohara, Tsuyoshi Konishi. "Optical Serial-to-Parallel Conversion based on Fractional OFDM scheme". 21th Optoelectronics and Communication Conference and International Conference on Photonics in Switching 2016 (OECC/PS2016). Jul.. 2016.
Cincotti Gabriella, Tsuyoshi Konishi, Takuya Murakawa, Tomotaka Nagashima, Satoshi Shimizu, Makoto Hasegawa, Kuninori Hattori, Masayuki Okuno, Shinji Mino, Akira Himeno, Naoya Wada, Hiroyuki Uenohara. "Time-frequency photonic signal processing". 21th Optoelectronics and Communication Conference and International Conference on Photonics in Switching 2016 (OECC/PS2016). Jul.. 2016.
Kohei Morita, Hiroyuki Uenohara. "2-stage cascaded silicon photonic PBS based on Mach Zehnder delay interferometers". 21th Optoelectronics and Communication Conference and International Conference on Photonics in Switching 2016 (OECC/PS2016). Jul.. 2016.
Hiroki Sasago, Hiroyuki Uenohara. "Investigation of Switch Reduction of a Multi-Dimensional Optical Node for Spatial Division Multiplexing Networks". 21th Optoelectronics and Communication Conference and International Conference on Photonics in Switching 2016 (OECC/PS2016). Jul.. 2016.
Yohei Aikawa, Hiroyuki Uenohara. "Experimental Demonstration of All-Optical FEC Coding Scheme with Convolutional Code". 21th Optpelectronics and Communication Conference and International Conference on Photonics in Switching 2016 (OECC/PS2016). Jul.. 2016.
Fumio Koyama. "High speed modulation of transverse coupled cavity VCSELs". 21st. Optoelectronics and Communications Conference (OECC/PS2016). MD2-1. Jul.. 2016.
Shunya Inoue, Masanori Nakahama, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "Fabrication of HCG MEMS VCSELs using nanoimprint lithography and consideration of athermal operation". 21st. Optoelectronics and Communications Conference (OECC/PS2016). MD2-3. Jul.. 2016.
Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "VCSEL-Integrated Bragg Reflector Waveguide Amplifier with Single-mode Output Power over 10 mW". 21st. Optoelectronics and Communications Conference (OECC/PS2016). MD2-4. Jul.. 2016.
Shunya Inoue, Masanori Nakahama, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "Consideration and Fabrication of athermal HCG MEMS VCSEL". International Nano-Optolectronics Workshop, iNOW2016. Poster Session-7. Jul.. 2016.
Shanting Hu, Xiaodong Gu, Fumio Koyama. "Low chirp operation of transverse-coupled-cavity VCSELs". Conference on Lasers and Electro-Optics 2016 (CLEO2016). SF1L.4. Jun.. 2016.
Minoru Saito, Shouhei Moriwaki, Tomoyuki Miyamoto. "Refractive index control by quantum well intermixing for light confinement in VCSEL". The 43th International Symposium on Compound Semiconductors (ISCS2016). Jun.. 2016.
Masanori Nakahama, Xiaodong Gu, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "Slow Light VCSEL Amplifier for High-resolution Beam Steering and High-power Operations". Conference on Lasers and Electro-Optics 2016 (CLEO2016). SF1L.5. Jun.. 2016.
Gabriella Cincotti, Satoshi Shimizu, Takuya Murakawa, Takahiro Kodama, Kuninori Hattori, Masayuki Okuno, Shinji Mino, Akira Himeno, Yutaka Nagashima, Makoto Hasegawa, Naoya Wada, Hiroyuki Uenohara, Tsuyoshi Konishi. "Flexible power-efficient Nyquist-OTDM transmitter, using a WSS and time-lens effect". Optical Fiber Communication Conference 2015 (OFC2015). Mar.. 2016.
Xiaodong Gu, Masanori Nakahama, Fumio Koyama. "Optical Wavelength Demultiplexer with 15~20dB Gain Based on an Active-type Bragg Reflector Waveguide Deflector". Proceedings of the 2017 IEICE General Conference. C-3-11. Mar.. 2016.
Shanting Hu, Xiaodong Gu, Fumio Koyama. "Low chirp operations of transverse-coupled-cavity VCSELs". Proceedings of the 2019 IEICE General Conference. C-4-20. Mar.. 2016.
Fumio Koyama. "Beam engineering of VCSELs using high-contrast grating and coupled cavities". SPIE. Photonics West 2016. 9757-14. Feb.. 2016.
Fumio Koyama. "Beam steering and vortex beam creation in VCSEL photonics". SPIE. Photonics West 2016. 9766-3. Feb.. 2016.

2015

論文

Hideaki Yamakawa, Takahiro Sakaguchi, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama. "Spatial-mode multiplexer/demultiplexer based on tapered hollow waveguide with lateral optical confinement". Japanese Journal of Applied Physics. Vol. 54, pp. 120302-1-3. 2015.
Hideyuki Kusano, Yuki Yanagidate, Hiroyuki Uenohara. "Investigation of a Silicon Photonic Optical Serial-to-Parallel Converter with Mach-Zehnder Delay Interferometers and Integrated Ge-Photodetectors". IEEE Journal of Quantum Electronics. vol. 51, no. 8. Aug.. 2015.
Masanori Nakahama, Xiaodong Gu, Takahiro Sakaguchi, Akihiro Matsutani, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama. "Sub-gigahertz beam switching of vertical-cavity surface-emitting laser with transverse coupled cavity". Applied Physics Letters. Vol. 107, No. 7, pp. 071105-1-4. Aug.. 2015.
Shanting Hu, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama. "Low chirp and high-speed operation of transverse coupled cavity VCSEL". Japanese Journal of Applied Physics. vol. 54, no. 9, pp. 090304-1-4. Aug.. 2015.
Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama. "850nm transverse-coupled-cavity vertical-cavity surface-emitting laser with direct modulation bandwidth of over 30GHz". Applied Physics Express. vol. 8, no. 8, pp. 82702-1-4. Jul.. 2015.
Moustafa Ahmed, Ahmed Bakry, Mohamed S. Alghamdi, Hamed Dalir, Fumio Koyama. "Enhancing the modulation bandwidth of VCSELs to the millimeter-waveband using strong transverse slow-light feedback". OPTICS EXPRESS. Vol. 23, No. 12, pp. 15365-15371. Jun.. 2015.
Akihiro Matsutani, Fumio Koyama. "Dry etching of SiC using Ar/F2 plasma and XeF2 plasma". Japanese Journal of Applied Physics. vol. 54, p. 06GB01. May.. 2015.
Xiaodong Gu, Kenya Suzuki, Yuichiro Ikuma, Kazunori Seno, Hiromasa Tanobe, Akihiro Matsutani, Fumio Koyama. "Compact Wavelength Selective Switch Using a Bragg Reflector Waveguide Array with Ultra-Large Number (>100) of Output-Ports". Journal of Lightwave Technology. vol. 33, no. 7, pp. 1358-1364. Apr.. 2015.

学会発表

Shanting Hu, Fumio Koyama. "High-speed and low chirp operations of transverse-coupled-cavity VCSELs". Technical Committee on Lasers and Quantum Electronics (LQE2015). Vol. 115, no. 378, pp. 5-8. 2015.
Yohei Aikawa, Hiroyuki Uenohara. "A Proposal and Analytical Investigation of Optical Comparison-Operation Scheme for Viterbi Decoding". Asia Photonics and Communications Conference 2015. Nov.. 2015.
Shouhei Moriwaki, Minoru Saito, Syougo Kunisada, Tomoyuki Miyamoto. "Characterization of ion implantation quantum well intermixing for carrier confinement of VCSEL". 20th Microoptics Conference (MOC'15). Oct.. 2015.
Masaki Hirota, Shiichi Iio, Ohta Yoshimi, Tomoyuki Miyamoto. "Wireless power transmission between a NIR VCSEL array and silicon solar cells". 20th Microoptics Conference (MOC'15). Oct.. 2015.
Shunya Inoue, Akihiro Matsutani, Hideo Ohtsuki, Takahiro Miyashita, Fumio Koyama. "Dual beam single-mode vertical cavity surface emitting lasers using high-index contrast grating". 20th Microoptics Conference 2015, MOC 2015. B5, pp. 26-27. Oct.. 2015.
Ibrahim Hameeda Ragab, Moustafa Ahmed, Fumio Koyama. "Influence of slow-light feedback on noise properties of VCSEL with a transverse coupled cavity". 20th Microoptics Conference 2015, MOC 2015. H3, pp. 26-28. Oct.. 2015.
Shanting Hu, Fumio Koyama. "Coupled mode analysis of High-speed Transverse Coupled Cavity VCSEL". 20th Microoptics Conference 2015, MOC 2015. J5, pp. 26-29. Oct.. 2015.
Masanori Nakahama, Xiaodong Gu, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Sub-gigahertz beam switching with transverse-mode coupled cavity VCSELs". 20th Microoptics Conference 2015. J2, pp. 280-281. Oct.. 2015.
Yohei Aikawa, Hiroyuki Uenohara. "Analytical Investigation of All-Optical FEC Coding Scheme with Convolutional Code". Photonics in Switching 2015. Sep.. 2015.
Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "First Demonstration of 850 nm Transverse Coupled Cavity Vertical Cavity Surface-Emitting Laser". The 76th JSAP Autumn Meeting 2015. 16a-2E-9. Sep.. 2015.
Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "Over 30 GHz Modulation of 850 nm Transverse Coupled Cavity Vertical-Cavity Surface-Emitting Laser". 41st European Conference and Exhibition on Optical Communication, ECOC 2015. ID: 0803. Sep.. 2015.
Kenji Tanabe, Xiaodong Gu, Akihiro Matsutani, Fumio Koyama. "Vortex Beam Emitter Laterally Integrated with Vertical Cavity Surface Emitting Laser". The 11th Conference on Lasers and Electro-Optics Rim. 27J2-5. Aug.. 2015.
Masanori Nakahama, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Precise Wavelength Tuning of MEMS VCSELs enabling 110-ch Operations". The 11th Conference on Lasers and Electro-Optics Rim. 26J3-5. Aug.. 2015.
Shanting Hu, Fumio Koyama. "Chirp Reduction and High-speed Operation Utilizing Lateral Optical Feedback of Coupled Cavity VCSEL". International Nano-Optoelectronics Workshop. Aug.. 2015.
Masanori Nakahama, Xiaodong Gu, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Transverse-mode Coupled cavity VCSELs with High Speed Beam Switching". International Nano-Optoelectronics Workshop. ThP1, pp. 119-120. Aug.. 2015.
Shunya Inoue, Akihiro Matsutani, Hideo Ohtsuki, Takahiro Miyashita, Fumio Koyama. "Beam engineering of VCSELs using High-index Contrast sub-wavelength Grating". International Nano-Optoelectronics Workshop. ThP7, pp. 131-132. Aug.. 2015.
Xiaodong Gu, Fumio Koyama. "60-channel Wavelength Selective Switch on Bragg Reflector Waveguides Array with 182 Output-ports". International Nano-Optoelectronics Workshop. ThP20, pp. 157-158. Aug.. 2015.
Fumio Koyama. "Beam Engineering in VCSEL Photonics". International Nano-Optoelectronics Workshop. TuC1, pp. 30-31. Aug.. 2015.
Ibrahim Hameeda R., Moustafa Ahmed, Fumio Koyama. "Modeling of Dynamics and Intensity Noise of Transverse Coupled Cavity VCSELs". International Nano-Optoelectronics Workshop. TuP15, pp. 60-61. Aug.. 2015.
Shanting Hu, Fumio Koyama. "Chirp Reduction and Modulation Bandwidth Enhancement of Transverse Coupled Cavity VCSEL". The 20th Opto Electronics and Communications Conference, OECC2015. JWeC.14. Jul.. 2015.
Masanori Nakahama, Hiroki Kobayashi, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Transverse-mode Control of Transverse-coupled Cavity VCSELs using Vernier Effect for Boosting Single-mode Power". Compound Semiconductor Week 2015, CSW2015. Tu405.4, pp. 346-347. Jul.. 2015.
Fumio Koyama. "Tunable Light Sources for Next Generation Access Networks". IEICE Technical Report. Technical Committee on Lasers and Quantum Electronics (LQE2015). Jun.. 2015.
Hamed Dalir, Fumio Koyama. "Millimeter-wave Modulation of 850 nm VCSELs for Radio over Fiber Applications". Conference on Lasers and Electro-Optics 2015, CLEO2015. SF1I.7. May.. 2015.
Hiroki Taniguchi, Hamed Dalir, Fumio Koyama. "High-speed Directly Modulated Laterally-coupled Twin Stripe Lasers for Optical Interconnects". Conference on Lasers and Electro-Optics 2015, CLEO2015. JTh2A.47. May.. 2015.
Moustafa Ahmed, Ahmed Bakry, Hamed Dalir, Fumio Koyama. "Application of Strong Slow-Light Feedback to Boost the Modulation Bandwidth of VCSELs Beyond 70 GHz". Conference on Lasers and Electro-Optics 2015, CLEO2015. SM3F.6. May.. 2015.
Kenji Tanabe, Xiaodong Gu, Akihiro Matsutani, Fumio Koyama. "Compact Vortex Beam Emitter Laterally Integrated with VCSEL Array". Conference on Lasers and Electro-Optics 2015, CLEO2015. SW1F.2. May.. 2015.
Tomoyuki Miyamoto. "VCSEL Technologies for High Power and High Efficiency". 3rd Laser Ignition Conference. Apr.. 2015.
Fumio Koyama. "Energy Efficient Tunable Light Sources for Next Generation Flexible Access Networks". Optical Fiber Communication Conference 2015. W1J.4. Mar.. 2015.
Hamed Dalir, Akihiro Matsutani, Fumio Koyama. "Ultra-compact and High-speed Electro-absorption Modulator Integrated VCSEL". 2015 IEICE General Conference. C-4-6. Mar.. 2015.
Fumio Koyama. "VCSEL Photonics and their applications". 2015IEICE General Conference. CI-3-3. Mar.. 2015.
Shanting Hu, Fumio Koyama. "Chirp Reduction Along with Modulation Bandwidth Enhancement Utilizing Coupled Cavity VCSEL". The62nd JSAP Spring Meeting 2015. 12a-A17-14. Mar.. 2015.
Ying-Yu Lai, Shunya Inoue, Tien-Chang Lu, Shing-Chung Wang, Fumio Koyama. "Fabrication of SiC Membrane High Contrast Grating Using Nanoimprint Lithography". The62nd JSAP Spring Meeting 2015. 12a-A17-11. Mar.. 2015.
Ying-Yu Lai, Akihiro Matsutani, Tien-Chang Lu, Shing-Chung Wang, Fumio Koyama. "Fabrication of SiC Membrane HCG Blue Reflector Using Nanoimprint Lithography". Photonics West2015. 9372－6. Feb.. 2015.
Fumio Koyama. "Virtually Image Phased Array based on Bragg Reflector Waveguide for Large-port Optical Switching". Photonics West2015. 9372－13. Feb.. 2015.

2014

論文

Mikio Sorimachi, Tomoyuki Miyamoto. ""Control of carrier reserving and injection for high-speed semiconductor optical amplifier". JPN. J. APPL. PHYS.. vol. 54. 2014.
Hiroyuki Uenohara, Yohei Aikawa. "A Bit Rate Adaptable Operation of a Hybrid Integrated Wavelength Converter using a Semiconductor Optical Amplifier Type Mach-Zehnder Interferometer". Optics Letters. vol. 38, no. 23, pp. 4982-4984. 2014.
Fumio Koyama. "Advances and New Functions of VCSEL Photonics". Optical Review. Vol. 21, No. 6, pp. 893-904. 2014.
Hamed Dalir, Fumio Koyama. "30GHz ultracompact electroabsorption modulator integrated with 980nm VCSEL with resonance effect in coupled cavities". Applied Physics Express(APEX). vol. 7, no. 11, pp. 112101-1-3. Oct.. 2014.
Xiaodong Gu, Ayako Suzuki, Akihiro Matsutani, Fumio Koyama. "20μm long slow-light Bragg reflector waveguide modulator with over 20GHz modulation bandwidth". Applied Physics Express(APEX). vol. 7, no. 11, pp. 114101-1-4. Oct.. 2014.
Hamed Dalir, Yuta Takahashi, Fumio Koyama. "Low-voltage, high-speed and compact electroabsorption modulator laterally integrated with 980-nm VCSEL". OPTICS EXPRESS(OPEX). vol. 22, no. 21, pp. 25746-25755. Oct.. 2014.
Masanori Nakahama, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Athermalization and on-chip multi-wavelength integration of VCSELs employing thermally actuated micromachined mirrors". Applied Physics Letters(APL). vol. 105, no. 091110 (2014), pp. 091110-1-4. Sep.. 2014.
Hamed Dalir, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama. "Compact electro-absorption modulator integrated with vertical-cavity surface-emitting laser for highly efficient millimeter-wave modulation". Applied Physics Letters(APL). vol. 105, no. 081113 (2014), pp. 081113-1-5 (2014). Aug.. 2014.
Shunya Inoue, Junichi Kashino, Akihiro Matsutani, Hideo Ohtsuki, Takahiro Miyashita, Fumio Koyama. "Highly angular dependent high-contrast grating mirror and its application for transverse-mode control of VCSELs". Japanese Journal of Applied Physics(JJAP). vol. 53, no. 9, pp. 090306-1-4. Aug.. 2014.
Masanori Nakahama, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Athermal and widely tunable VCSEL with bimorph micromachined mirror". Optics Express. Vol. 22, no. 18, pp. 21471-21479. Aug.. 2014.
Asako Kikuchi, Tomoyuki Miyamoto. "Reflectivity characteristics of high-contrast grating mirrors for a small-sized beam spot". JPN. J. APPL. PHYS.. vol. 53. Jul.. 2014.
Hamed Dalir, Fumio Koyama. "40 Gbps modulation of transverse coupled cavity VCSEL with push–pull modulation scheme". Applied Physics Express(APEX). vol. 7, pp. 092701-1-4. Jul.. 2014.
Hiroyuki Uenohara, Kotaro Negishi. "Operational Performance of an Optical Serial-to-Parallel Converter Based on a Mach-Zehnder Delay Interferometer and a Phase-Shifted Preamble for DPSK-Formatted Signals". IEICE transaction on Electronics. vol. EC96, No. 7, pp. 1012-1018. Jul.. 2014.
Hamed Dalir, Fumio Koyama. "Highly stable operations of transverse coupled cavity VCSELs with enhanced modulation bandwidth". Electronics Letters 22nd. vol. 50, no. 11, pp. 823-824. May.. 2014.
Hamed Dalir, Fumio Koyama. "Highly efficient out-of-plane optical coupler based on tapered hollow waveguide". Japanese Journal of Applied Physics. vol. 53, pp. 048004-1-4. Mar.. 2014.
Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Lateral Integration of Vertical Cavity Surface Emitting Laser and Slow Light Bragg Reflector Waveguide Devices". Applied Optics. vol. 53, no. 9, pp. 1766-1774. Feb.. 2014.

学会発表

Fumio Koyama. "Wavelength Engineering of MEMS VCSELs-Waveleng tuning, athermalization and new functions". International Conference on Small Science, ICSS 2014. JR-13, pp. 92-93. 2014.
Akihiro Matsutani, Fumio Koyama. "Microfabrication of 4H-SiC by Reactive Ion Etching Using XeF2 Plasma". 2014 International Symposium on Dry Process (DPS2014). Nov.. 2014.
Akihiro Matsutani, Fumio Koyama. "Dry Etching of 4H-SiC using Ar/F2 Plasma". 27th International Microprocesses and Nanotechnology Conference, MNC2014. 6P-7-34. Nov.. 2014.
Xiaodong Gu, Kenya Suzuki, Yuichiro Ikuma, Fumio Koyama. "Large Point-Count Wavelength Selective Switch Based on a Bragg Reflector Waveguides Array". Oct.. 2014.
Xiaodong Gu, Ayako Suzuki, Akihiro Matsutani, Fumio Koyama. "Miniature Slow-Light Bragg Reflector Waveguide Modulator with over 20GHz Modulation Bandwidth". Oct.. 2014.
Fumio Koyama. "VCSEL Photonics for High-Speed Optical Interconnects". The 4th Annual World Congress of Nano Science & Technology-2014, Nano-S&T2014. pp. 056. Oct.. 2014.
Xiaodong Gu, Kenya Suzuki, Yuichiro Ikuma, Akihiro Matsutani, Fumio Koyama. "Improvement in Crosstalk of 200-Port Bragg Reflector Waveguides Array-based Wavelength Selective Switch". IEEE Photonics Conference, IPC2014. MB2.4, pp. 34-35. Oct.. 2014.
Masanori Nakahama, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Athermal multi-wavelength VCSEL array employing thermally actuated micromachined mirrors". IEEE International Semiconductor Laser Conference. WB5. Sep.. 2014.
Toshikazu Shimada, Hamed Dalir, Akihiro Matsutani, Fumio Koyama. "Beam scanner integrated VCSEL with electro-thermal wavelength tuning". IEEE International Semiconductor Laser Conference. WB3. Sep.. 2014.
Hamed Dalir, Yuta Takahashi, Fumio Koyama. "Ultra-compact and High-bandwidth (>30GHz) Modulator Integrated VCSEL with Transverse-mode Beating". IEEE International Semiconductor Laser Conference. WB1. Sep.. 2014.
Fumio Koyama. "Beam Steering, Beam Shaping and Intensity Modulation Based on Bragg Reflector (30min.)Waveguides". The 75th JSAP Autumn Meeting 2014. 20p-C1-6. Sep.. 2014.
Hamed Dalir, Fumio Koyama. "Ultra-fast Compact Modulator-Integrated-VCSEL for Highly Efficient Millimeter-wave Modulation". The 75th JSAP Autumn Meeting 2014. 20p-C1-5. Sep.. 2014.
Xiaodong Gu, Kenya Suzuki, Yuichiro Ikuma, Fumio Koyama. "60-Channels Flexible-Grid Wavelength Selective Switch Based on a Compact Bragg Reflector Waveguides Array". The 75th JSAP Autumn Meeting 2014. 19a-C7-10. Sep.. 2014.
Xiaodong Gu, Kazunori Seno, Hiromasa Tanobe, Fumio Koyama. "60-channel Wavelength Selective Switch on Bragg Reflector Waveguides Array with 125 Output-ports". European Conference on Optical Communications, ECOC 2014. We.3.5.3, pp. 1-3. Sep.. 2014.
Hamed Dalir, Yuta Takahashi, Fumio Koyama. "High-speed Compact Electro-absorption Modulator Laterally Integrated with VCSEL". European Conference on Optical Communications, ECOC 2014. Mo.4.4.6, pp. 1-3. Sep.. 2014.
Shunya Inoue, Fumio Koyama. "Highly angular dependent high contrast grating mirror for transverse mode control of VCSELs". iNOW2014, International Nano-Optoelectronics Workshop. PS2.05, pp. 120-121. Aug.. 2014.
Fumio Koyama, Hamed Dalir. "High speed modulation and new functions of transverse coupled cavity VCSEL". iNOW2014, International Nano-Optoelectronics Workshop. FrA1, pp. 38-39. Aug.. 2014.
Xiaodong Gu, Ayako Suzuki, Hamed Dalir, Akihiro Matsutani, Fumio Koyama. "Large Enhancement in Modulation Bandwidth of Low-Voltage Slow Light Bragg Reflector Waveguide Modulator". OECC 2014. OECC 2014. pp. 170-171. Jul.. 2014.
Hamed Dalir, Fumio Koyama. "Highly Stable Operations of High Speed Transverse Coupled Cavity VCSELs". The OptoElectronics and Communication Conference 2014, OECC 2014. MO1D-3, pp. 35-36. Jul.. 2014.
Masanori Nakahama, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Athermal and Widely Tunable VCSEL with Bimorph Micromachined Mirror". OECC 2014. OECC 2014. vol. 22, no. 18, pp. 37-39. Jul.. 2014.
Asako Kikuchi, Tomoyuki Miyamoto. "Study on Optical Confinement of Small Size VCSEL Using Index Change of QWI". The 19th Microoptics Conference. Jun.. 2014.
Shunya Inoue, Fumio Koyama. "High-Contrast Grating Spatial Mode Filter for Widely Tunable Vertical Surface Emitting Laserfor". 19th Microoptics Conference, MOC2014. Jun.. 2014.
Fumio Koyama, Hamed Dalir. "High-speed modulation of transverse-coupled-cavity VCSELs". SPIE, Photonics Europe. 9134-6. Apr.. 2014.
Hamed Dalir, Yuta Takahashi, Toshikazu Shimada, Fumio Koyama. "Strong Lateral Coupling from VCSEL to Slow Light Waveguide by Width Modification". The 61st JSAP Spring Meeting 2014. 18p-F9-16. Mar.. 2014.
Xiaodong Gu, Akihiro Matsutani, Fumio Koyama. "Bragg Reflector Waveguide Modulator toward High-Speed Operations and Low Power Consumption". The 61st JSAP Spring Meeting 2014. 20a-F8-1. Mar.. 2014.
Xiaodong Gu, Fumio Koyama. "Large Port-Count Wavelength Selective Switch Based on High-density Bragg Reflector Waveguide Array". The 61st JSAP Spring Meeting 2014. 17p-PA2-7. Mar.. 2014.
Hamed Dalir, Fumio Koyama. "27 GHz Directly Modulated Transverse Coupled Cavity VCSEL by Utilizing the Photon-Photon Resonance". The 61st JSAP Spring Meeting 2014. 18p-F9-15. Mar.. 2014.
Hamed Dalir, Yuta Takahashi, Fumio Koyama. "Low Driving Voltage (< 400mVpp) Electro-absorption Modulator Laterally Integrated with VCSEL". Optical Fiber Communications Conference and Exhibition 2014, OFC 2014. W4C.3, pp. 1-3. Mar.. 2014.
Xiaodong Gu, Fumio Koyama. "Compact Wavelength Selective Switch Based on High-density Bragg Reflector Waveguide Array with 120 Output Ports". Optical Fiber Communications Conference and Exhibition 2014,OFC 2014. Th3F.1, pp. 1-3. Mar.. 2014.

その他

Hamed Dalir, Yuta Takahashi, Fumio Koyama. "Low Driving Voltage Electro-absorption Modulator Laterally Integrated with VCSEL". IEICE Technical Report. Jun.. 2014.

2013

論文

Ayumi Fuchida, Akihiro Matsutani, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama. "Low-polarization dependent thermo-optic phase-shift in slow light Bragg reflector waveguide for beam steering and optical switching". Jpn. J. Appl. Phys.. vol. 53, no. 1, 010306-1-3. 2013.
Masanori Nakahama, Hayato Sano, Shunya Inoue, Takahiro Sakaguchi, Akihiro Matsutani, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama. "Wavelength tuning and controlled temperature dependence in vertical-cavity surface-emitting lasers with a thermally and electrostatically actuated cantilever structure". Jpn. J. Appl. Phys.. vol. 53, no. 1, pp. 010303-1-3. 2013.
Moustafa Ahmed, Ahmed Bakry, Reem Altuwirqi, Mohamed S. Alghamdi, Fumio Koyama. "Enhancing Modulation Bandwidth of Semiconductor Lasers beyond 50 GHz by Strong Optical Feedback for Use in Millimeter-Wave Radio over Fiber Links". Jpn.J.Appl.Phys. vol. 52, pp. 124103-1-5. 2013.
Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Compact Slow-Light Electro-Absorption Modulator Laterally Integrated with 980nm Vertical-Cavity Surface-Emitting Laser". Applied Physics Express, APEX. no. 6, 122102-1-4. Nov.. 2013.
Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Compact beam deflector based on slow-light Bragg reflector waveguide monolithically integrated with VCSEL". IEICE Electronics Express. vol. 10, no. 22, pp. 1-7. Nov.. 2013.
Tomohiro Akutsu, Takuya Usio, Akihiro Matsutani, Tomoyuki Miyamoto. "Fabrication and characterization of VCSELs applying quantum well intermixing using spin-on-glass". Physica Status Solidi. vol. 10(c), no. 11, pp. 1452-1546. Nov.. 2013.
Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Low polarization dependent beam deflector based on Bragg reflector waveguide for C-band wavelength demultiplexing". J.Appl.Phys. vol. 114, no. 16, 163106-1-4. Oct.. 2013.
M.Ahmed, A.Bakry, M.S. Alghamdi, Fumio Koyama. "Intensity noise in ultra-high frequency modulated semiconductor laser with strong feedback and its influence on noise figure of RoF links". J.Europ.Opt.Soc, JECS. 13064-1-6. Sep.. 2013.
Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "35-μm Bragg Reflector Waveguide Modulator for High-Speed and Energy-Saving Operation". IEEE Photonics Technology Letters. Vol. 25, no. 18, pp. 1766-1769. Sep.. 2013.
Hamed Dalir, Fumio Koyama. "29GHz directly modulated 980nm vertical-cavity surface emitting lasers with bow-tie shape transverse coupled cavity". Appl. Phys. Lett.. vol. 103, 091109-1-4. Aug.. 2013.
Fumio Koyama, Xiaodong Gu. "Beam Steering, Beam Shaping, and Intensity Modulation Based on VCSEL Photonics". IEEE JOURNAL OF SELECTED TOPICS ON QUANTUM ELECTRONICS. vol. 19, no. 4. Jul.. 2013.
Masanori Nakahama, Hayato Sano, Shunya Inoue, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Tuning Characteristics of Monolithic MEMS VCSELs with Oxide Anti-reflection Layer". IEEE Photonics Technology letters. vol. 25, no. 18, pp. 1747-1750. Jul.. 2013.

学会発表

Masanori Nakahama, Xiaodong Gu, Hirokazu Sumimoto, Fumio Koyama. "Beam-steering in Hollow Distributed Bragg Reflector Waveguides for RGB Imaging". The 20th international display workshops. PRJ2-4. 2013.
Tomoyuki Miyamoto. "Intermixing technologies for small VCSELs and fine oxidation structures". 2013 Asia Communications and Photonics Conference (ACP2013). Nov.. 2013.
Masanori Nakahama, Hayato Sano, Shunya Inoue, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Wavelength tuning and controlled temperature dependence of MEMS VCSELs with thermally and electrostatically actuated micromachined mirror". 18th Microoptics Conference (MOC’13). C3. Oct.. 2013.
Xiaodong Gu, Kazunori Seno, Hiromasa Tanobe, Fumio Koyama. "Wavelength selective switch with high angular dispersion element based on Bragg reflector waveguide". 18th Microoptics Conference ,MOC'13. F2. Oct.. 2013.
Hideaki Yamakawa, Masanori Sadamitsu, Takahiro Sakaguchi, Fumio Koyama. "Spatial mode multiplexer/demultiplexer based on tapered hollow waveguide with lateral optical confinement structure". 18th Microoptics Conference (MOC’13). H9. Oct.. 2013.
Xiaodong Gu, Syouki Shimizu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "High-speed and low-voltage operation of compact Bragg reflector waveguide modulator". 18th Microoptics Conference (MOC’13). C2. Oct.. 2013.
Hamed Dalir, Fumio Koyama. "Modulation response enhancement of transverse-coupled cavity VCSELs for radio over fiber applications". 18th Microoptics Conference (MOC’13). C4. Oct.. 2013.
Asako Kikuchi, Daisuke Nakagawa, Tomoyuki Miyamoto. "HCG reflectivity characteristics for a small-sized beam spot". 18th Microoptics Conference ,MOC’13. Oct.. 2013.
Hamed Dalir, Akihiro Matsutani, Fumio Koyama. "Modulation Bandwidth Enhancement of Laterally-coupled Cavity VCSELs for Radio over Fiber Applications". The 74th Autumn Meeting 2019. 16p-A8-6. Sep.. 2013.
Hamed Dalir, Akihiro Matsutani, Fumio Koyama. "Beyond 25GHz Directly Modulated 980nm VCSEL with Lateral Optical Feedback". The 74th Autumn Meeting 2013. 16p-D4-7. Sep.. 2013.
Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Ultra-compact Bragg Reflector Waveguide Modulator with Large Response Bandwidth and Low Power Consumption". The 74th Autumn Meeting 201. 19a-P2-10. Sep.. 2013.
Hideyuki Kusano, Hiroyuki Uenohara. "Silicon Photonic Optical Serial-to-Parallel Converter with Phase Operation". 39th European Conference on Optical Communication (ECOC2013). Sep.. 2013.
Hamed Dalir, Akihiro Matsutani, Fumio Koyama. "Transverse Coupled Cavity VCSELs for Push-Pull Modulation". The 74th Autumn Meeting 2013. 16p-D4-8. Sep.. 2013.
Xiaodong Gu, Akihiro Matsutani, Fumio Koyama. "1550nm-band Low Polarization Dependence Wavelength Demultiplexing Using Bragg Reflector Waveguide". The 74th Autumn Meeting 2013. 19a-P2-11. Sep.. 2013.
Hamed Dalir, Fumio Koyama. "Modulation Bandwidth Enhancement of Quasi-single-mode Transverse Coupled Cavity VCSEL". IEEE Photonics Conference 2013(IPC2013). PD3, pp. 1-2. Sep.. 2013.
Junichi Kashino, Shunya Inoue, Akihiro Matsutani, Hideo Ohtsuki, Takahiro Miyashita, Fumio Koyama. "Transverse Mode Control of VCSELs Using Angular Dependent High-contrast Grating Mirror". IEEE Photonics Conference 2013(IPC2013). TuE2.2, pp. 244-245. Sep.. 2013.
Fumio Koyama. "Beam Steering and Intensity Modulation Based on VCSEL Photonics". 2013 International Nano-Optoelectronics Workshop, iNOW2013. Aug.. 2013.
Hamed Dalir, Fumio Koyama. "Beyond 28.6GHz Directly Modulated 980nm VCSEL with Transverse Optical Feedback of Slow Light". Aug.. 2013.
Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Super-high Resolution Beam Steering Using Bragg Reflector Waveguides". 2013 International Nano-Optoelectronics Workshop, iNOW2013. Aug.. 2013.
Fumio Koyama. "Wavelength engineering of VCSELs based on MEMS technologies". IEEE Optical MEMS and Nanophotonics 2013. TM-S1.1, pp. 37-38. Aug.. 2013.
Hideaki Yamakawa, Takahiro Sakaguchi, Fumio Koyama. "Wavelength Tuning of Hollow Waveguide DBR Lasers". 2013 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR. MK2-1. Jul.. 2013.
Hiroyuki Uenohara, Yutaro Sano, Hideyuki Kusano. "40Gbps Operation of an Optical Serial-to-Parallel Converter for DPSK Signals with Phase Operation". Photonics in Switching 2013. Jul.. 2013.
Hiroyuki Uenohara. "Investigation of an Interleaver for All-Optical Analog-to-Digital Conversion". Photonics in Switching 2013. Jul.. 2013.
Masanori Nakahama, Hayato Sano, Shunya Inoue, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "Electro-thermally Tunable 850nm VCSELs with metal/semiconductor Thermally Actuated Mirror". 2013 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR. MK2-2. Jul.. 2013.
Hamed Dalir, Fumio Koyama. "Laterally-Coupled-Cavity VCSELs for Push-Pull High Speed Modulation". IEEE Summer Topicals 2013. MA4.3. Jul.. 2013.
Hamed Dalir, Akihiro Matsutani, Fumio Koyama. "Modulation of Spatial Intensity Distribution of Laterally Coupled Twin VCSELs". 2013 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR. ThK3-2. Jul.. 2013.
Fumio Koyama, Xiaodong Gu. "Super-high Resolution Optical Beam Steering Based on Bragg Reflector Waveguides". 2013 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR. MK2-3. Jul.. 2013.
Hideyuki Kusano, Hiroyuki Uenohara. "Investigation of number of processing bit of a Si photonic optical serial-to-parallel converter with phase operation". Photonics in Switching 2013. Jul.. 2013.
Hamed Dalir, Fumio Koyama. "High-speed Direct Modulation Beyond 29GHz of 980nm Transverse Coupled Cavity VCSEL". 2013 Conference on Lasers and Electro-Optics Pacific Rim, CREO-PR. PD2-2. Jul.. 2013.
Xiaodong Gu, Syouki Shimizu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Sub-1V and Sub-100μm Electro-absorption Modulator Based on Bragg Reflector Waveguide". 2013 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR. WK2-4. Jul.. 2013.
Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Sub-50μm Long Slow-light Electro-absorption Modulator Laterally Integrated with VCSEL". 2013 Conference on Lasers and Electro-Optics Pacific Rim CLEO-PR. WK2-5. Jul.. 2013.
Mikio Sorimachi, Hajime Iwasaki, Tomoyuki Miyamoto. "Theoretical investigation of high speed SOA using recombination-controlled carrier reservoir". The 18th OptoElectronics and Communications Conference (OECC2013). Jul.. 2013.
Xiaodong Gu, Kensuke Nakamura, Akihiro Matsutani, Fumio Koyama. "Miniature Bragg Reflector Waveguide Beam Deflector for Full C-band Wavelength Demultiplexing with Low Polarization Dependence and High Resolution". CLEO 2013. CTh4L.4. Jun.. 2013.
Shota Mochizuki, Xiaodong Gu, Akihiro Matsutani, Fumio Koyama. "Creation of Vortex Beam based on Integrated Ring-shape Bragg Reflector Waveguide". CLEO 2013. Jun.. 2013.
Hamed Dalir, Fumio Koyama. "Push-Pull Modulation of Transverse Coupled-Cavity VCSELs". IEICE Technical Report, LQE/OPE2013. Jun.. 2013.
Toshihiro Furukawa, Fumiya Hoshino, Yoshitaka Kobayashi, Tomoyuki Miyamoto. "Growth and photoluminescence characteristics of GaNAsP/GaP 3QW on GaP substrate". The 40th International Symposium on Compound Semiconductors (ISCS2013). May.. 2013.
Fumiya Hoshino, Toshihiro Furukawa, Tomoyuki Miyamoto. "Growth characteristics of GaInAs quantum dots on GaP substrate by MOCVD". The 40th International Symposium on Compound Semiconductors (ISCS2013). May.. 2013.
Tomohiro Akutsu, Takuya Ushio, Akihiro Matsutani, Tomoyuki Miyamoto. "Fabrication and characterization of VCSELs applying quantum well intermixing using". The 40th International Symposium on Compound Semiconductors (ISCS2013). May.. 2013.
Xiaodong Gu, Masanori Nakahama, Fumio Koyama. "Beam-steering in Hollow ZrO2/SiO2 DBR Waveguides for 1D RGB Imagin". The 2nd Laser Display Conference. Apr.. 2013.
Hamed Dalir, Fumio Koyama. "Electrical Transverse-Mode Switching of Laterally Coupled Cavity VCSELs". IEICE General Conference 2013. C-4-9. Mar.. 2013.
Xiaodong Gu, Syouki Shimizu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Demonstration of an Electro-absorption Optical Modulator based on Bragg Reflector Waveguide with Ultra-low Driving Voltage". IEICE General Conference 2013. C-4-30. Mar.. 2013.
Kohei Saito, Hiroyuki Uenohara. "Analytical investigation of operating conditions for simultaneous intensity and phase noise suppression using phase sensitive semiconductor optical amplifiers". Optical Fiber Communication Conference and Exposition / National Fiber Optic Engineers Conference (OFC/NFOEC) 2013. Mar.. 2013.
Masanori Nakahama, Hayato Sano, Shunya Inoue, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "Giant wavelength-temperature dependence of 850nm VCSELs with a metal/semiconductor thermally actuated mirror". Vertical-Cavity Surface-Emitting Lasers XVII,Photonics West 2013. 8639-14. Feb.. 2013.
Fumio Koyama, Xiaodong Gu. "Super-high resolution beam steering based on Bragg reflector waveguides with high- contrast metastructures". Vertical-Cavity Surface-Emitting Lasers XVII. 8633-14. Feb.. 2013.
Hamed Dalir, Akihiro Matsutani, Fumio Koyama. "Push-pull modulation of lateral coupling of dual VCSEL cavities using a bow-tie shape". Vertical-Cavity Surface-Emitting Lasers XVII, SPIE Photonics West 2013. 8639-31. Feb.. 2013.
Jyunichi Kashino, Hayato Sano, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "Modeling and fabrication of angular dependent Si high-contrast grating mirror for transverse mode control of VCSELs". Photonics West 2013. 8633-33, S10. Feb.. 2013.

2012

論文

Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Ultra-high channel-count wavelength demultiplexer based on a Bragg reflector waveguide with large angular dispersion". OPTICS EXPRESS. vol. 20, no. 26, B331-338. 2012.
Yusuke Naito, Satoshi Shimizu, Tomoyuki Kato, Kohroh Kobayashi, Hiroyuki Uenohara. "Investigation of all-optical latching operation of a monolithically integrated SOA-MZI with a feedback loop". Optics Express. Vol. 20, No. 26, pp. B339-B349. 2012.
Hayato Sano, Norihiko Nakata, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "Athermal and tunable operations of 850nm vertical cavity surface emitting lasers with thermally actuated T-shape membrane structure". Appl. Phys. Lett.. Vol. 101, No. 12, 121115. Oct.. 2012.
Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Miniature Non-mechanical Beam Deflector Based on Bragg Reflector Waveguide with a Number of Resolution-points Larger than 1,000". IEEE Photon. J. Vol. 4, No. 5, pp. 1712-1719. Oct.. 2012.
Satoshi Shimizu, Hiroyuki Uenohara. "All-optical signal regenerator for differential phase-shift keying format employing a differential encoding circuit with SOA-MZIs". IEEE J. QUANTUM. ELECT.. vol. 48, No. 9. Sep.. 2012.
Tomoyuki Miyamoto, Satoru Tanabe, Rei Nishio, Yoshitaka Kobayashi, Ryoichiro Suzuki. "InAs quantum dot growth on a thin GaNP buffer layer on GaP by metalorganic chemical vapor deposition". Jpn. J. Appl. Phys.. vol. 51, no. 8. Aug.. 2012.
Akihiro Matsutani, Yuuki Hashidume, Hideo Ohtsuki, Fumio Koyama. "Microfabrication of Si-Based High-Index-Contrast-Grating Structure by Thermal Nanoimprint Lithography and Cl2/Xe-Inductively Coupled Plasma Etching". Jpn. J. Appl. Phys.. Vol. 51, 06FF05. Jun.. 2012.
Satoshi Shimizu, Hiroyuki Uenohara. "Analytical Investigation of an All-Optical T-type Flip-Flop using an Semiconductor Optical Amplifier Mach-Zehnder Interferometer with Push-Pull Configuration". Japanese Journal of Applied Physics. vol. 50, no. 6. May.. 2012.
You Nomiyama, Kohroh Kobayashi, Hiroyuki Uenohara. "Proposal for a Novel Bistable Device Using Two-mode Competition Between an In-plane Laser Diode and a Vertical-Cavity Surface Emitting Laser". Japanese Journal of Applied Physics. vol. 50, no. 12. May.. 2012.
Go Yazawa, Satoshi Shimizu, Hiroyuki Uenohara. "An Optical Serial-to-Parallel Conversion Technique with Phase-Shifted Preamble for Optical Label Switching Systems". IEEE Journal of Quantum Electronics. vol. 47, no. 9, pp. 1222-1229. May.. 2012.
Yohei Aikawa, Satoshi Shimizu, Hiroyuki Uenohara. "Demonstration of All-Optical Divider Circuit using SOA-MZI-type XOR Gate and Feedback Loop for Forward Error Detection". Journal of Lightwave Technology. vol. 29, no. 15, pp. 2259-2266. May.. 2012.
Masatoshi Namiki, Takayoshi Mori, Satoshi Shimizu, Hiroyuki Uenohara. "Improvement in the Performance of a Semiconductor Optical Amplifier based Delayed Interference Signal-wavelength Converter with Phase Offset of a Mach-Zehnder Delay Interferometer and BPF Detuning". IEEE Journal of Quantum Electronics. vol. 48, no. 3, pp. 433-439. May.. 2012.
Masanori Nakahama, Xiaodong Gu, Toshikazu Shimada, Fumio Koyama. "On-Chip High-Resolution Beam Scanner Based on Bragg Reflector Slow-Light Waveguide Amplifier and Tunable MEMS VCSEL". Jpn. J. Appl. Phys.. vol. 51, no. 4, pp. 040208-1-3. Mar.. 2012.
Masanori Nakahama, Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama. "Giant wavelength-temperature dependence of a micro-machined VCSEL with a thermally actuated cantilever structure". Jpn. J. Appl. Phys.. vol. 51, no. 4, pp. 040209-1-3. Mar.. 2012.
Ayumi Fuchida, Akihiro Matsutani, Fumio Koyama. "Fabrication and Characterization of Bragg Reflector Slow Light Waveguide with Oxide Lateral Confinement". Jpn. J. Appl. Phys.. vol. 51, no. 4, pp. 050203-1-3. Mar.. 2012.
Xiaodong Gu, Toshikazu Shimada, Ayumi Fuchida, Akihiro Matsutani, Akihiro Imamura, Fumio Koyama. "Ultra-compact beam-steering device based on Bragg reflector waveguide amplifier with number of resolution points over 100". Electron. Lett.. vol. 48, no. 6, pp. 336-337. Mar.. 2012.
Masanori Nakahama, Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama. "Electro-Thermal Tuning of MEMS VCSEL with Giant Wavelength-temperature dependence". IEICE Electronics Express. vol. 9, no. 5, pp. 416-421. Mar.. 2012.
Masanori Nakahama, Toshikazu Shimada, Fumio Koyama. "Lateral Integration of MEMS VCSEL and Slow Light Amplifier Boosting Single Mode Power". IEICE Electronics Express. vol. 9, no. 6, pp. 544-551. Mar.. 2012.
Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama. "Wavelength Trimming of Micro-Machined VCSELs". IEICE Trans. Electron.. vol. E95-C, no. 2, pp. 237-242. Feb.. 2012.

学会発表

Hayato Sano, Norihiko Nakata, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "Athermal and Tunable VCSELs with a Thermally Actuated Cantilever Structure for WDM Optical Interconnects". IEEE CPMT Symposium Japan, ICSJ2012. 9-2. 2012.
Syouki Shimizu, Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "Modeling and Experiment on Low Voltage Slow-Light Electro-absorption Modulators for High-speed and Low Power Consumption Optical Interconnect". IEEE CPMT Symposium Japan, ICSJ2012. 9-3. 2012.
Fumio Koyama. "Advances of VCSEL Photonics". 23rd IEEE International Semiconductor Laser Conference, ISLC2012. PLE3. Oct.. 2012.
Xiaodong Gu, Toshikazu Shimada, Satoshi Shimizu, Akihiro Matsutani, Fumio Koyama. "Compact Bragg Reflector Waveguide Modulator Based on VCSEL Structure with Low Driving Voltage below 0.5 V". 23rd IEEE International Semiconductor Laser Conference, ISLC2012. TuP26. Oct.. 2012.
Hamed Dalir, Fumio Koyama. "Proposal of In-plane to Vertical Optical Coupler Based on Tapered Hollow Waveguide". Frontiers in Optics 2012, FiO2012. FW5E.4. Oct.. 2012.
Hideaki Yamakawa, Tomohiro Akutsu, Takahiro Sakaguchi, Fumio Koyama. "Hollow Waveguide DBR Lasers with Novel 2D Optical Confinement Toward Athermal and Narrow Linewidth Operations". 23rd IEEE International Semiconductor Laser Conference. ISLC2012. TuA7, pp. 48-49. Oct.. 2012.
Hayato Sano, Norihiko Nakata, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "Electro-Thermal Tuning of Athermal 850nm VCSELs with Thermally Actuated T-shape Membrane Structure". IEEE PHOTONICS CONFERENCE 2012, IPC2012. TuF4. Sep.. 2012.
Yusuke Naito, Satoshi Shimizu, Tomoyuki Kato, Kohroh Kobayashi, Hiroyuki Uenohara. "All-Optical Latch and Gate Pulse Generation in All Monolithically Integrated SOA-MZI-Type Set/Reset Flip-Flop using Ultrashort Optical Pulses for 40Gbps Operation". 38th European Conference on Optical Communication (ECOC2012). Sep.. 2012.
Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "High-resolution Wavelength Demultiplexer Based on a Bragg Reflector Waveguide Amplifier with Large Angular Dispersion". 38th European Conference and Exhibition on Optical Communication, ECOC2012. Mo.2.E.4. Sep.. 2012.
Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "On-Chip Electro-Thermal Beam Steering based on Slow-light Bragg Reflector Waveguide Laterally Integrated with VCSEL". IEEE PHOTONICS CONFERENCE 2012, IPC2012. TuF2. Sep.. 2012.
Ayumi Fuchida, Akihiro Matsutani, Fumio Koyama. "Giant Electro-thermal Phase-shift in Low-Polarization Dependent Slow Light Bragg Reflector Waveguide". IEEE PHOTONICS CONFERENCE 2012, IPC2012. ThZ5. Sep.. 2012.
Xiaodong Gu, Toshikazu Shimada, Syouki Shimizu, Akihiro Matsutani, Fumio Koyama. "Compact Bragg Reflector Waveguide Modulator with Ultra-low Driving Voltage below 0.5 V". The 73rd JSAP Autumn Meeting 2012. 12a-PA3-25. Sep.. 2012.
Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Fumio Koyama. "High-resolution Wavelength Demultiplexer Based on a Bragg Reflector Waveguide". The 73rd JSAP Autumn Meeting 2012. 13p-C5-10. Sep.. 2012.
Hamed Dalir, Fumio Koyama. "Electrical Transverse-Mode Switching of Laterally Coupled Cavity VCSELs". 2012 International Nano-Optoelectronics Workshop, iNOW 2012. 4-P4. Aug.. 2012.
Hayato Sano, Norihiko Nakata, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "Athermal Operation and Wavelength Tuning of VCSELs with Thermally Actuated MEMS Structure". 2012 International Nano-Optoelectronics Workshop, iNOW 2012. 2-P14. Aug.. 2012.
Masanori Nakahama, Xiaodong Gu, Toshikazu Shimada, Hayato Sano, Akihiro Matsutani, Fumio Koyama. "Lateral Integration of MEMS VCSEL and Slow Light Amplifier for High Single-mode Output Power". 2012 International Nano-Optoelectronics Workshop, iNOW 2012. 1-P9. Aug.. 2012.
Fumio Koyama. "High-resolution Beam Steering from Bragg-reflector Waveguide". 2012 International Nano-Optoelectronics Workshop, iNOW 2012. Th3. Aug.. 2012.
Hiroyuki Uenohara, Yohei Aikawa. "Hybrid Integrated Semiconductor Optical Amplifier-Mach Zehnder Interferometer (SOA-MZI)-type All-Optical Wavelength Converter with a Selectable Delay Time Push-Pull Configuration". The 17th OptoElectronics and Communications Conference (OECC2012). May.. 2012.
Kotaro Negishi, Hiroyuki Uenohara. "Investigation of Optical Label Recognition using Optical Serial-to-parallel Converter with Phase Operation for DPSK Signal". The 17th OptoElectronics and Communications Conference (OECC2012). May.. 2012.
Yusuke Naito, Satoshi Shimizu, Noboru Fukui, Tomoyuki Kato, Kohroh Kobayashi, Hiroyuki Uenohara. "Experimental Demonstration of an Optical Packet Gatingusing a Monolithically-Integrated InP SOA-MZI-type All-Optical Flip-Flop Circuit with a Feedback Loop". The 17th OptoElectronics and Communications Conference (OECC2012), Busan, Korea,. May.. 2012.
Kohei Saito, Hiroyuki Uenohara. "Analytical Investigation of Possibility of a Phase Sensitive Amplifier Based on Four Wave Mixing in a Semiconductor Optical Amplifier". The 17th OptoElectronics and Communications Conference (OECC2012). May.. 2012.
Yusuke Naito, Satoshi Shimizu, Noboru Fukui, Tomoyuki Kato, Kohroh Kobayashi, Hiroyuki Uenohara. "Set/Reset Operation of a Monolithically-Integrated InP SOA-MZI-type All-Optical Flip-Flop Circuit with a Feedback Loop". May.. 2012.
Hayato Sano, Jyunichi Kashino, Adair Gerke, Akihiro Imamura, Fumio Koyama, Connie Chang-Hasnain. "Transverse Mode Control of VCSELs with High Contrast Sub-Wavelength Grating Functioning as Angular Filter". Conference on Lasers and Electro-Optics 2012, CLEO 2012. CW3N.5. May.. 2012.
Masanori Nakahama, Xiaodong Gu, Toshikazu Shimada, Fumio Koyama. "Monolithic Beam Steering Device employing Slow-light Waveguide and Tunable MEMS VCSEL". Conference on Lasers and Electro-Optics 2012, CLEO 2012. JW2A.94. May.. 2012.
Xiaodong Gu, Toshikazu Shimada, Ayumi Fuchida, Akihiro Matsutani, Akihiro Imamura, Fumio Koyama. "Thermal and Electrical Beam Steering on a GaInAs/GaAs Slow-light Bragg Waveguide Amplifier". Conference on Lasers and Electro-Optics 2012, CLEO 2012. JW2A.90. May.. 2012.
Hamed Dalir, Fumio Koyama. "90°Bend Device Based on Tapered Hollow Waveguide". The 59th Spring Meeting of Japan Society of Applied Physics and Related Societies. 18a-GP4-14. Mar.. 2012.
Hayato Sano, Jyunichi Kashino, A Gerke, Akihiro Imamura, Fumio Koyama, C.J. Chang-Hasnain. "Transverse Mode Control of VCSELs with High Contrast Sub-Wavelength Grating Functioning as Angular Filter". The 59th Spring Meeting of Japan Society of Applied Physics and Related Societies. 16p-F3-3. Mar.. 2012.
Ayumi Fuchida, Akihiro Matsutani, Fumio Koyama. "Switching Characteristics of 30μm×30μm Compact Optical Switch with Slowing Light". Optical Fiber Communications Conference 2012, OFC/NFOEC2012. JTh2a.15. Mar.. 2012.
Hamed Dalir, Fumio Koyama. "Taper Structure for Lateral Coupling from VCSEL to Slow Light Waveguide". The 59th Spring Meeting of Japan Society of Applied Physics and Related Societies. 17p-GP12-3. Mar.. 2012.

2011

論文

Xiaodong Gu, Toshikazu Shimada, Fumio Koyama. "Giant and high-resolution beam steering using slow-light waveguide amplifier". Optics Express. Vol. 19, No. 23, 22675～22683. Nov.. 2011.
Xiaodong Gu, Toshikazu Shimada, Ayumi Fuchida, Akihiro Matsutani, Akihiro Imamura, Fumio Koyama. "Beam steering in GalnAs/GaAs slow-light Bragg reflector waveguide amplifier". Appl. Phys. Lett.. vol. 99, no. 21, pp. 211107-1-3. Nov.. 2011.
Xiaodong Gu, Akihiro Imamura, Fumio Koyama. "Wavelength Trimming of Vertical-Cavity Surface-Emitting Lasers with High-Contrast Subwavelength Grating". Jpn. J. Appl. Phys.. vol. 50, 100207-1~3. Oct.. 2011.
Yasutaka Higa, Hiroshi Nakajima, Mikio Sorimachi, Tomoyuki Miyamoto. "Large kink characteristics in light output of tunnel injection quantum well lasers". Jpn. J. Appl. Phys.. vol. 50, no. 8. Aug.. 2011.
Unknown Unknown, Mikio Sorimachi, Takuya Nishinome, Tomoyuki Miyamoto. "Well-in-well structure for high speed carrier relaxation into quantum well". Jpn. J. Appl. Phys.. vol. 50, no. 8. Aug.. 2011.
Akihiro Imamura, Akihiro Matsutani, Fumio Koyama. "Multiplexing of Multi-Wavelength 1060-nm-Band GaInAs/GaAs Vertical Cavity Surface Emitting Laser Array Using Tapered Hollow Waveguide". Appl. Phys. Exp.. vol. 4, 082106-1-3. Jul.. 2011.
Hamed Dalir, Fumio Koyama. "Bandwidth enhancement of single-mode VCSEL with lateral optical feedback of slow light". IEICE Electronics Express. vol. 8, no. 13, pp. 1075-1081. Jul.. 2011.
Ayumi Fuchida, Akihiro Matsutani, Fumio Koyama. "Slow-light total-internal-reflection switch with bending angle of 30 deg". Optics Letters. vol. 36, no. 14, pp. 2644-2646. Jul.. 2011.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Inductively Coupled Plasma Etching of Silicon Using Solid Iodine as an Etching Gas Source". Japanese Journal of Applied Physics. Vol. 50, 06GG07. Jun.. 2011.
Hamed Dalir, Yasushi Yokota, Fumio Koyama. "Spatial Mode Multiplexer/Demultiplexer Based on Tapered Hollow Waveguide". IEICE Electronics Express. 2011XCL6281. May.. 2011.
P. Babu Dayal, Fumio Koyama. "A Review on Polarization Control of Vertical-Cavity Surface-Emitting Semiconductor Lasers". Recent Patents on Electrical Engineering,. vol. 4, no. 2, pp. 81-97. May.. 2011.
Tomoyuki Miyamoto, Ryoichiro Suzuki, Tomoyuki Sengoku. "Multilayer InAs quantum dot with a thin spacer layer partly inserted GaNAs strain compensation layer". Jpn. J. Appl. Phys.. vol. 50, no. 3. Mar.. 2011.
Tomoyuki Miyamoto, Ryoichiro Suzuki. "Post-thermal annealing effects on photoluminescence properties of InAs quantum dots on GaNAs buffer layer". Jpn. J. Appl. Phys.. vol. 50, no. 3. Mar.. 2011.

学会発表

Fumio Koyama. "VCSEL-based Photonic Integration". Global COE International Symposium. 2011.
Jyunichi Kashino, Akihiro Imamura, Fumio Koyama. "TRANSVERSE MODE CONTROL OF VCSELS USING HIGHLY ANGULAR DEPENDENT HIGH CONTRAST SUB-WAVELENGTH GRATING". 17th Microoptics Conference, MOC'11. H-24. Nov.. 2011.
Yasumitsu Miyake, Ayumi Fuchida, Fumio Koyama. "SLOW LIGHT AMPLIFIER WITH HIGHLY ANGULAR DEPENDENT HCG MIRROR". 17th Microoptics Conference, MOC'11. H-25. Nov.. 2011.
Fumio Koyama. "ADVANCES OF VCSEL PHOTONICS". 17th Microoptics Conference, MOC'11. A-3. Nov.. 2011.
Mikio Sorimachi, Unknown Unknown, Takuya Nishinome, Hajime Iwasaki, Tomoyuki Miyamoto. "Numerical analysis of gain saturation characteristics of semiconductor optical amplifier using tunnel injection structure". 17th Microoptics Conference (MOC2011). Nov.. 2011.
Daisuke Nakagawa, Yusuke Mikoshiba, Tomoyuki Miyamoto. "Reflectivity characteristics of high refractive index contrast sub-wavelength grating mirror without low index spacer layer". 17th Microoptics Conference (MOC2011). Nov.. 2011.
Xiaodong Gu, Toshikazu Shimada, Ayumi Fuchida, Akihiro Imamura, Akihiro Matsutani, Fumio Koyama. "EXPERIMENTAL DEMONSTRATION OF BEAM-STEERING BASED ON SLOW-LIGHT WAVEGUIDE AMPLIFIER". 17th Microoptics Conference, MOC'11. C-3. Oct.. 2011.
Masanori Nakahama, Toshikazu Shimada, Fumio Koyama. "LATERAL INTEGRATION OF MEMS VCSEL AND SLOW LIGHT AMPLIFIER". 17th Microoptics Conference, MOC'11. C-5. Oct.. 2011.
Toshikazu Shimada, Fumio Koyama. "SLOW LIGHT AMPLIFIER LATERALLY INTEGRATED WITH VCSEL". 17th Microoptics Conference, MOC'11. C-6. Oct.. 2011.
Akihiro Matsutani, Yuuki Hashidume, Hideo Ohtsuki, Fumio Koyama. "Si based High-index-contrast-grating Structure fabricated by High Temperature Cl2 Inductively Coupled Plasma Etching using Thermal Nanoimprint Resist Mask". 24th International Microprocesses and Nanotechnology Conference, MNC2011. 26P-7-59. Oct.. 2011.
Unknown Unknown, Mikio Sorimachi, Takuya Nishinome, Hajime Iwasaki, Akihiro Matsutani, Tomoyuki Miyamoto. "The Reduction of Dumping Factor at Well-in-Well Quantum Well Lasers". IEEE PHOTONICS 2011. IEEE PHOTONICS 2011. pp. 680-681. Oct.. 2011.
Ayumi Fuchida, Akihiro Matsutani, Fumio Koyama. "Miniature Slow Light Total-Internal-Reflection Switch with Carrier Injection". IEEE PHOTONICS 2011. MJ5, pp. 79-80. Oct.. 2011.
Masanori Nakahama, Norihiko Nakata, Hayato Sano, Akihiro Matsutani, Fumio Koyama. "Giant Wavelength-temperature Dependence and Electro-thermal Tuning of MEMS VCSEL". IEEE PHOTONICS 2011. ThDD2, pp. 913-914. Oct.. 2011.
Akihiro Imamura, Weijian Yang, Xiaodong Gu, Fumio Koyama, Connie J. Chang-Hasnain. "Transverse Mode Demultiplexing Based on HCG Hollow Waveguide". The 2011 IEICE Society Conference. C-3-17. Sep.. 2011.
Xiaodong Gu, Toshikazu Shimada, Fumio Koyama. "Proposal of Beam-deflector based on Slow Light Amplifier". The 2011 IEICE Society Conference. C-3-5. Sep.. 2011.
Unknown Unknown, Mikio Sorimachi, Takuya Nishinome, Tomoyuki Miyamoto. "Control of carrier relaxation for suppression of optical gain damping by using Well-in-Well structure". 12th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD2012). Sep.. 2011.
Toshikazu Shimada, Ayumi Fuchida, Fumio Koyama. "Lateral Integration of VCSEL and Slow Light Modulator". 37TH EUROPEAN CONFERENCE AND EXHIBITION ON OPTICAL COMMUNICATION,ECOC2011. We.10.P1.36, pp. 1-3. Sep.. 2011.
Xiaodong Gu, Toshikazu Shimada, Fumio Koyama. "Giant and High-resolution Beam-steering from Slow Light Amplifier with Bragg Reflector Waveguide". IQEC/CLEO Pacific Rim 2011. 834, pp. 336-338. Aug.. 2011.
Hamed Dalir, Fumio Koyama. "Enhanced modulation bandwidth of VCSELs with lateral optical feedback beyond the frequency of relaxation oscillations". International Nano-Optoelectronics Workshop, iNOW2011. P3. Jul.. 2011.
Toshikazu Shimada, Fumio Koyama. "Lateral Integration of VCSEL with Slow Light Modulator". International Nano-Optoelectronics Workshop, iNOW2011. P10. Jul.. 2011.
Akihiro Matsutani, Hayato Sano, Norihiko Nakata, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "Athermal Operations and Giant Temperature Dependence of Micromachined VCSELs". International Nano-Optoelectronics Workshop, iNOW2011. P9. Jul.. 2011.
Fumio Koyama. "New Functions and Integration of VCSEL-based Slow Light Devices". International Nano-Optoelectronics Workshop, iNOW2011. MoB2. Jul.. 2011.
Hamed Dalir, Yasushi Yokota, Fumio Koyama. "Spatial Mode Multiplexer/Demultiplexer Based on Tapered Hollow Waveguide". The 16th Opto-Electronics And Communications Conference, OECC2011. 7E2_2. Jul.. 2011.
Akihiro Imamura, Weijian Yang, James Ferrara, Yuuki Hasidume, Xiaodong Gu, Fumio Koyama, Connie J. Chang-Hasnain. "Spatial Mode Demultiplexer Based on High Contrast Sub-Wavelength Grating Hollow Waveguide". The 16th Opto-Electronics And Communications Conference, OECC2011. 6E1_4. Jul.. 2011.
Xiaodong Gu, Toshikazu Shimada, Fumio Koyama. "Proposal of Beam Steering on Slow-light Waveguide Amplifier". The 16th Opto-Electronics And Communications Conference, OECC2011. 6D2_4. Jul.. 2011.
Toshikazu Shimada, Fumio Koyama. "Lateral Integration of VCSEL and Slow Light Amplifier". The 16th Opto-Electronics And Communications Conference, OECC2011. 6D2_3. Jul.. 2011.
Fumio Koyama. "Recent Advances in VCSEL Photonics". The 16th Opto-Electronics and Communications Conference, OECC2011. 7D4_1. Jul.. 2011.
Satoshi Shimizu, Hiroyuki Uenohara. "Analytical Investigation of an All-Optical T-type Flip-Flop using an SOA-MZI with Push-Pull Configuration for DPSK encoding". Photonics in Switching 2010. Jul.. 2011.
Takuya Nishinome, Unknown Unknown, Mikio Sorimachi, Tomoyuki Miyamoto. ""Fabrication and characterization of laser with WWell active layer for the carrier". 30th Electronic Materials Symposium (EMS2011). Jul.. 2011.
Unknown Unknown, Mikio Sorimachi, Takuya Nishinome, Tomoyuki Miyamoto. ""Well-in-Well Quantum Structure for High Speed LO-Phonon Carrier Scattering". 30th Electronic Materials Symposium (EMS2011). Jul.. 2011.
Hiroshi Takanashi, Tomoyuki Kato, Akihiro Matsutani, Takahiro Sakaguchi, Kohroh Kobayashi, Hiroyuki Uenohara. "Investigation of Optimized Condition of a Passively Mode-Locked VCSEL with Double-Path Resonance Configuration". 16th Opto-Electronics and Communications Conference (OECC2011),. pp. 269-270. Jul.. 2011.
Hayato Sano, Norihiko Nakata, Masanori Nakahama, Akihiro Matsutani, Fumio Koyama. "Wavelength Tuning and Athermal Operations of Micro-machined VCSELs for Uncooled WDM". Conference on Lasers and Electro-Optics, CLEO2011. CMI4. May.. 2011.
Hideaki Yamakawa, Naomi Tadokoro, Takahiro Sakaguchi, Yoshihisa Tokunaga, Fumio Koyama. "Athermal Hollow Waveguide Distributed Bragg Reflector Laser". Conference on Lasers and Electro-Optics, CLEO2011. CMI6. May.. 2011.
Ayumi Fuchida, Akihiro Matsutani, Fumio Koyama. "Reflection-type Slow Light Optical Switches Using Current Injection". Conference on Lasers and Electro-Optics, CLEO2011. JTuI3. May.. 2011.
Masanori Nakahama, Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama. "Giant Wavelength-Temperature Dependence of VCSEL with Thermally Actuated Cantilever Structure". Conference on Lasers and Electro-Optics, CLEO2011. CMI7. May.. 2011.
Xiaodong Gu, Akihiro Imamura, Fumio Koyama. "Proposal of athermal HCG-VCSEL using Benzocyclobutene polymer". The 58th Spring Meeting of Japan Society of Applied Physics and Related Societies. 26a-P5-5. Mar.. 2011.
S. C. Wang, Fumio Koyama. "Nano-photonic devices for manipulation of light". Taiwan-Japan Workshop. Mar.. 2011.
Hamed Dalir, Fumio Koyama. "Proposal of Spatial Mode Multiplexer/Demultiplexer Based on Tapered Hollow Waveguide". The 58th Spring Meeting of Japan Society of Applied Physics and Related Societies. 24p-KA-13. Mar.. 2011.

2010

論文

Takayoshi Mori, Hiroyuki Uenohara, Kohroh Kobayashi. "Investigation of Improvement of Dynamic Switching Operation for Wavelength Switch with Super-Structure-Grating(SSG)-DBR-LD, Delayed-Interference Signal-Wavelength Converter(DISC), and Band Pass Filter". Journal of Lightwave Technology. Vol. 28, No. 23, pp. 3444-3453. 2010.
Kengo Sawada, Hiroyuki Uenohara. "High-Speed Optical Label Recognition Technique using an Optical Digital-to-Analog Conversion and Its Application to Optical Label Switch". Journal of Lightwave Technology. Vol. 28, No. 13, pp. 1889-1896. Jul.. 2010.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Reactive Ion Etching of Si Using Ar/F2 Plasma". Jpn. J. Appl. Phys.. Vol. 49, 06GH05. Jun.. 2010.
Satoshi Shimizu, Hiroyuki Uenohara. "A Proposal and Analytical Investigation of an All-Optical T-type Flip-Flop using SOA-MZI Configuration for DPSK Encoding Operation". Japanese Journal of Applied Physics. Vol. 49, No. 6. Jun.. 2010.
Kengo Sawada, Hiroyuki Uenohara. "An InGaAsP/InP Optical Digital-to-Analog Converter for 40Gbps, 3-bit Operation". Electronics Letters. Vol. 46, No. 10, pp. 697-698. May.. 2010.
Satoshi Shimizu, Hiroyuki Uenohara. "A Proposal of A Novel Gain Profile Model of Multi-Quantum-Well Semiconductor Optical Amplifiers". Japanese Journal of Applied Physics. vol. 49, no. 3, 030204. Mar.. 2010.

学会発表

Fumio Koyama. "Advances of VCSEL Photonics for Optical Interconnects". 10th IEEE International Conference on Solid-State and Integrated Circuit Technology, ICSICT2010. I08-15. Nov.. 2010.
Toshikazu Shimada, Fumio Koyama. "Lateral Integration of VCSEL with Slow Light Amplifier/Modulator". IEEE Photonics Society 23rd Annual Meeting, IEEE2010. TuQ4. Nov.. 2010.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Dry Etching of Si by Solid Source I2 Inductively Coupled Plasma". 23rd International Microprocesses and Nanotechnology Conference,MNC2010. 11D-8-54. Nov.. 2010.
Fumio Koyama. "Athermal Semiconductor Lasers based on VCSEL Technology". 16th MicroOptics Conference, MOC2010. TA2. Oct.. 2010.
Hamed Dalir, Fumio Koyama. "Large signal modulation analysis of lateral-optical-feedback VCSELs". 16th MicroOptics Conference, MOC2010. MD1. Oct.. 2010.
Xiaodong Gu, Akihiro Imamura, Fumio Koyama. "Grating Trimming of VCSEL with High Contrast sub-wavelength Grating". 16th MicroOptics Conference, MOC2010. TB5. Oct.. 2010.
Ayumi Fuchida, Takeru Sakairi, Akihiro Matsutani, Fumio Koyama. "Characterizations of Reflection-type Slow Light Optical Switches". 16th MicroOptics Conference, MOC2010. TB6. Oct.. 2010.
Ken Kirita, Takahiro Sakaguchi, Fumio Koyama. "Vertical Interconnections for Stacked Photonic Integrated Circuits with Multimode Interference Hollow Waveguide". 16th MicroOptics Conference, MOC2010. WC4. Oct.. 2010.
Hamed Dalir, Fumio Koyama. "Proposal of laterally coupled VCSELs for modulation-bandwidth enhancement". The 71th Autumn Meeting of JSAP. 16p-H-5. Sep.. 2010.
Go Yazawa, Satoshi Shimizu, Hiroyuki Uenohara. "Demonstration of optical packet switching with phase-shifted preamble-based optical serial-to-parallel conversion-type label processor". Sep.. 2010.
Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama. "Controlled temperature dependence of lasing wavelength of VCSELs with a thermally actuated cantilever". 2010 IEEE International Semiconductor Laser Conference, ISLC Kyoto. WC5, pp. 160-161. Sep.. 2010.
Akihiro Imamura, Akihiro Matsutani, Fumio Koyama. "Multi-wavelength 1060nm-band VCSEL Array with Tapered Hollow Waveguide Multiplexer". 2010 IEEE International Semiconductor Laser Conference, ISLC Kyoto. MB3, pp. 7-8. Sep.. 2010.
Hamed Dalir, Fumio Koyama. "Modulation bandwidth enhancement of VCSELs with lateral optical feedback of slow light". 2010 IEEE International Semiconductor Laser Conference, ISLC Kyoto. P10, pp. 83-84. Sep.. 2010.
Akihiro Imamura, Akihiro Matsutani, Fumio Koyama. "Tapered hollow waveguide multiplexer for multi-wavelegth VCSEL array". 2010 International Nano-Optoelectronics Workshop, iNOW 2010. P11, pp. 170-171. Aug.. 2010.
Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama. "Wavelength Control of VCSELs with a Thermally Actuated MEMS Structure". 2010 International Nano-Optoelectronics Workshop, iNOW 2010. P15, pp. 286-287. Aug.. 2010.
Fumio Koyama. "VCSEL-based Slow Light Photonics". 2010 International Nano-Optoelectronics Workshop, iNOW 2010. MoA3, pp. 8-9. Aug.. 2010.
Yohei Aikawa, Satoshi Shimizu, Hiroyuki Uenohara. "Investigation of all-optical division processing using a SOA-MZI-based XOR gate for all-optical FEC with cyclic code". Photonics in Switching 2010. Jul.. 2010.
Fumio Koyama. "Advances of VCSEL Photonics". Laser Optics 2010. ThR3-25. Jul.. 2010.
Fumio Koyama. "Wavelength Engineering of VCSELs". 15th OptoElectronics and Communications Conference. 9D2-2, pp. 834-835. Jul.. 2010.
Ayumi Fuchida, Akihiro Matsutani, Fumio Koyama. "Compact Reflection-type Optical Switch with Slowing Light". 15th OptoElectronics and Communications Conference. 9D2-3, pp. 836-837. Jul.. 2010.
Norihiko Nakata, Hayato Sano, Akihiro Matsutani, Fumio Koyama. "Proposal of Multi-Wavelength Integration of Athermal GAAS VCSEL Array with Thermally Actuated Cantilever Structure". International Conference on Indium Phosphide and Related Materials. WeP35, pp. 299-302. Jun.. 2010.
Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama. "Wavelength Trimming of MEMS VCSELs for Post-process Wavelength Allocation". International Conference on Indium Phosphide and Related Materials. ThA1-5, pp. 397-400. Jun.. 2010.
Ayumi Fuchida, Bala Pesala, Vadim Karagodsky, Forrest G. Sedgwick, Fumio Koyama, Connie J. Chang-Hasnain. "Zero-Dispersion Slow Light in Hollow Waveguide with High-Contrast Grating". Laser Science to Photonic, CLEO/QELS:2010. CThW5. May.. 2010.
Vadim Karagodsky, Bala Pesala, Christopher Chase, Werner Hofmann, Fumio Koyama, Connie J. Chang-Hasnain. "Multiwavelength High Contrast Grating VCSEL Array With 200nm Spectral Range". Laser Science to Photonic, CLEO/QELS:2010. CMO6. May.. 2010.
Satoru Tanabe, Ryoichiro Suzuki, Kosuke Nemoto, Rei Nishio, Tomoyuki Miyamoto. "InAs QDs grown on GaP buffer layer on Si substrate". The 37th International Symposium on Compound Semiconductors. May.. 2010.
Rei Nishio, Satoru Tanabe, Ryoichiro Suzuki, Kosuke Nemoto, Tomoyuki Miyamoto. "Reduction of surface roughness of GaP on Si substrate using strained GaInP interlayer by MOCVD". 2010 International Conference on Indium Phosphide and Related Materials. May.. 2010.
Mikio Sorimachi, Unknown Unknown, Shinya Matsuzaki, Tomoyuki Miyamoto. "Numerical simulation of dynamic properties of high speed SOA with a tunnel injection structure". Conference on Lasers and Electro-Optics (CLEO2010). May.. 2010.
Ken Kirita, Takahiro Sakaguchi, Fumio Koyama. "Polarization-insensitive Vertical MMI Hollow Waveguide Coupler for 3D Integrated Photonic Circuits". G-COE International Symposium. P-39. Mar.. 2010.
Takayoshi Fujisawa, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "In-plane Optical Coupling to Bragg Reflector Slow Light Waveguide Devices". G-COE International Symposium. P-41. Mar.. 2010.
Ayumi Fuchida, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Optical Switch with Slowing Light in Bragg Reflector Waveguide". G-COE International Symposium. P-40. Mar.. 2010.
Hayato Sano, Norihiko Nakata, Akihiro Matsutani, Fumio Koyama. "Wavelength Control of VCSELs with a Thermally Actuated MEMS Structure". G-COE International Symposium. P-2. Mar.. 2010.
Norihiko Nakata, Hayato Sano, Akihiro Matsutani, Fumio Koyama. "Multi-Wavelength Integration of Athermal VCSELs with a Micromachined Cantilever". G-COE International Symposium. P-3. Mar.. 2010.
Akihiro Imamura, Xiaodong Gu, Vadim Karagodsky, Bala Pesala, Connie J. Chang-Hasnain, Fumio Koyama. "Design of Multi-Wavelength VCSEL Array based on High Contrast Sub-Wavelength Grating". G-COE International Symposium. P-4. Mar.. 2010.
Yuuki Hashidume, Akihiro Matsutani, Fumio Koyama. "Fabrication of High Contrast Grating with Nanoimprint Process". G-COE International Symposium. P-5. Mar.. 2010.

その他

Fumio Koyama. "Tunable Hollow Waveguide Devices-Giant Tuning, Athermal Operation and Slowing Light-". 2010 G-COE International Symposium. pp. 46-48. Mar.. 2010.

2009

論文

Padullaparthi Babudayal, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Multiple-Wavelength Vertical-Cavity Surface-Emitting Lasers by Grading a Spacer Layer for Short-Reach Wavelength Division Multiplexing Applications". Appl. Phys. Exp.. vol. 2, no. 9. Aug.. 2009.
Xiaoxue Zhao, Bo Zhang, Louis Christen, Devang Parekh, Werner Hofmann, Markus C. Amann, Fumio Koyama, Alan E. Willner, Connie J. Chang-Hasnain. "Greatly increased fiber transmission distance with an optically injection-locked vertical-cavity surface-emitting laser". OPTICS EXPRESS. vol. 17, no. 16, pp. 13785-13791. Aug.. 2009.
Go Yazawa, Satoshi Shimizu, Hiroyuki Uenohara. "Analytical investigation of an optical serial-to-parallel converter with phase-shifted preamble and Mach-Zehnder delay interferometers". Japanese Journal of Applied Physics. Vol. 48, No. 7, p. 070210. Jul.. 2009.
Tomoyuki Sengoku, Ryoichiro Suzuki, Kosuke Nemoto, Satoru Tanabe, Fumio Koyama, Tomoyuki Miyamoto. "Photoluminescence characteristics of InAs quantum dots with GaInP cover layer grown by metalorganic chemical vapor deposition". Jpn. J. Appl. Phys.. vol. 48, no. 7R, pp. 070203-1-3. Jul.. 2009.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Smooth and Vertical Profile Dry Etching of Si Using XeF2 Plasma". Japanese Journal of Applied Physics. vol. 48, no. 6S, pp. 06FE09-1-3. Jun.. 2009.
Hayato Sano, Akihiro Matsutani, Fumio Koyama. "Athermal 850nm Vertical Cavity Surface Emitting Lasers with Thermally Actuated Cantilever Structure". Appl. Phys. Exp. vol. 2, no. 7, pp. 072101-1-3. Jun.. 2009.
Fumio Koyama. "VCSEL Photonics -advances and new challenges". IEICE ELEX. vol. 6, no. 11, pp. 651-672. Jun.. 2009.
Hayato Sano, Fumio Koyama. "Proposal of gain-matched VCSELs with a thermally actuated MEMS structure for wide temperature operations". IEICE ELEX. vol. 6, no. 12, pp. 883-888. Jun.. 2009.
Masahiro Suzuki, Hiroyuki Uenohara. "Investigation of All-Optical Error Detection Circuit using SOA-MZI-based XOR Gates at 10Gbps". Electronics Letters. Vol. 45, No. 4, pp. 224-225. Feb.. 2009.

学会発表

Fumio Koyama. "Wavelength Control of VCSELs". The XV International Workshop on the Physics of Semiconductor Devices, IWPSD 2009. pp. 77-80. 2009.
Fumio Koyama. "Advances of VCSEL-related Photonic Devices". 12th International Symposium on Microwave and Optical Technology, ISMOT 2009. I-605, pp. 999-1002. 2009.
Hiroyuki Uenohara, Kengo Sawada, Go Yazawa, Satoshi Shimizu. "40Gbps Operation of Autonomous Optical Label Processing and its Application to Optical Label Switching Systems". 4TH International Workshop on OPS and OCDMA(IWOO2009). Nov.. 2009.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Dry Etching of Si using Ar/F2 Plasma". 22nd International Microprocesses and Nanotechnology Conference, MNC2009. 18D-7-50, pp. 254-255. Nov.. 2009.
Hayato Sano, Fumio Koyama. "Proposal of Gain-matched VCSELs with a Thermally Actuated Cantilever Structure for Ultra-wide Temperature Operations". 15th Microoptics Conference, MOC2009. K4. Oct.. 2009.
Yusuke Mikoshiba, Tomoyuki Miyamoto. "Theoretical design of current injection type high-index contrast subwavelength grating mirror for VCSELs". 15th Microoptics Conference (MOC'09). Oct.. 2009.
Fumio Koyama. "Advances of Surface Emitting Lasers". International Symposium of Advanced Photonic Electronics, JSPS2009. pp. 35-40. Oct.. 2009.
Ken Kirita, Fumio Koyama. "Vertical MMI Coupler for 3D Photonic Integrated Circuits". The 22nd Annual Meeting of the IEEE Photonics Society. WL2, pp. 477-478. Oct.. 2009.
Akihiro Imamura, Vadim Karagodsky, Bala Pesala, Fumio Koyama, Connie J. Chang-Hasnain. "Multi-Wavelength VCSEL Array based on High Contrast Sub-Wavelength Grating". The 22nd Annual Meeting of the IEEE Photonics Society. ThX5, pp. 811-812. Oct.. 2009.
Satoshi Shimizu, Hiroyuki Uenohara. "A Proposal and Analytical Investigation of All-Optical T-type Flip-Flop using SOAs". Photonics in Switching 2009. PT-8. Sep.. 2009.
Takayoshi Mori, Hiroyuki Uenohara, Kohroh Kobayashi. "Improvement of Wavelength Switch Performance Consisting of a SSG-DBR-LD and a SOA-DISC with BPF Detuning". 35th European Conference on Optical Communication (ECOC2009). P3.03. Sep.. 2009.
Kengo Sawada, Hiroyuki Uenohara. "40Gbps, 3-bit Operation of a Semiconductor Optical Digital-to-Analog Converter". 35th European Conference on Optical Communication (ECOC2009). Mon.1.2.4. Sep.. 2009.
Hayato Sano, Akihiro Matsutani, Fumio Koyama. "Athermal and Tunable Operations of 850nm VCSEL with Thermally Actuated Cantilever Structure". ECOC 2009. P2.26. Sep.. 2009.
Akihiro Imamura, Akihiro Matsutani, Fumio Koyama. "Tapered hollow waveguide multiplexer for multi-wavelength VCSEL array". 2009 International Nano-Optoelectronics Workshop, iNOW2009. P7. Aug.. 2009.
Fumio Koyama, Hayato Sano. "VCSEL Photonics –Tuning, Athermalization and Slowing-down –". CLEO/Pacific Rim 2009. 978-1-4244-3830-3/09. Aug.. 2009.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Tomoyuki Sengoku, Kosuke Nemoto, Satoru Tanabe, Rei Nishio, Fumio Koyama. "InAs quantum dots on GaInNAs buffer layer". 36th International Symposium on Compound Semiconductors. pp. 133-134. Aug.. 2009.
Ayumi Fuchida, Fumio Koyama. "Slow Light Optical Switch with Brag Reflector Waveguide". 2009 International Nano-Optoelectronics Workshop, iNOW2009. P29, pp. 177-178. Aug.. 2009.
Fumio Koyama. "Manipulation of Light in VCSELs and Hollow Waveguides". 2009 International Nano-Optoelectronics Workshop, iNOW2009. ThA2, pp. 37-38. Aug.. 2009.
Hiroshi Takanashi, Tomoyuki Kato, Akihiro Matsutani, Takahiro Sakaguchi, Takashi Miyaguchi, Kohroh Kobayashi. "Actively mode-locked VCSEL module with double-path resonance configuration". OECC2009. Jul.. 2009.
Satoshi Shimizu, Hiroyuki Uenohara. "A Novel Modeling of Gain Profile of the MQW-SOAs". 14th Optoelectronics and Communications Conference (OECC2009). WO5. Jul.. 2009.
Masatoshi Namiki, Hiroyuki Uenohara, Kohroh Kobayashi. "Improvement of Performance of a SOA based Delayed Interference Signal-wavelength Converter with MZDI Phase Offset and BPF Detuning". 14th Optoelectronics and Communications Conference (OECC2009). Jul.. 2009.
Fumio Koyama, Hayato Sano. "Wavelength control of MEMS VCSELs". Opto-Electronics and Communications Conference 2009, OECC2009. FO3. Jul.. 2009.
Fumio Koyama. "New Functions of VCSEL-related Photonic Devices". International Conference on Materials for Advanced Technologies, ICMAT2009. A02997, 05119. Jun.. 2009.
Bala Pesala, Vadim Karagodsky, Connie Chang-Hasnain, Vadim Karagodsky, Fumio Koyama, Connie J. Chang-Hasnain. "Novel 2D High-Contrast Grating Hollow-Core Waveguide". Conference on Lasers and Electro-Optics. CLEO/IQEC2009. CMQ7. May.. 2009.
Satoru Tanabe, Ryoichiro Suzuki, Tomoyuki Sengoku, Kosuke Nemoto, Tomoyuki Miyamoto. "InAs QDs on thin GaP_1-xN_x buffer on GaP by MOCVD". 2009 International Conference on Indium Phosphide and Related Materials (IPRM2009). May.. 2009.
Yuta Sugawara, Tomoyuki Miyamoto. "Laterally intermixed quantum structure for carrier confinement of VCSELs". Conference on Lasers and Electro-Optics (CLEO/IQEC2009). May.. 2009.
Fumio Koyama, P. Babu Dayal, Akihiro Imamura, Takahiro Sakaguchi, Akihiro Matsutani. "Multiple-Wavelength GaInAs/GaAs VCSELs with Grading a Spacer Layer for Short Reach WDM Applications". 2009 International Conference on Indium Phosphide and Related Materials. IPRM2009. Tu B2-6, pp. 182-184. May.. 2009.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Tomoyuki Sengoku, Kosuke Nemoto, Satouru Tanabe, Fumio Koyama. "Photoluminescence Characteristics of MOCVD Grown-InAs Quantum Dots Covered by GaInP Laye". 2009 International Conference on Indium Phosphide and Related Materials, IPRM2009. WB1-7, pp. 234-237. May.. 2009.
Fumio Koyama, Ayumi Fuchida. "Low-dispersion INGaAsP/InP Slow Light Waveguide Optical Switch with Coupled Bragg Reflector Waveguide". 2009 International Conference on Indium Phosphide and Related Materials, IPRM2009. MB1-4, pp. 37-40. May.. 2009.
Fumio Koyama, Koichi Hasebe, Yusuke Mada, Takeru Sakairi, Akihiro Matsutani. "High-Speed Optical Modulation based on Frequency-Modulated VCSELs and Optical Filters". 2009 International Conference on Indium Phosphide and Related Materials. IPRM2009. ThB1-5, pp. 379-382. May.. 2009.
Kengo Sawada, Hiroyuki Uenohara. "Optical Label Switching Performance with an Autonomous Operating 40Gbps Optical Digital-to-Analog Converter-Type Label Processor". Optical Fiber Communication Conference and Exposition / National Fiber Optic Engineers Conference (OFC/NFOEC) 2009. OMU6. Mar.. 2009.

2008

論文

Fumio Koyama. "New Functions of VCSEL-based Optical Devices". Chinese Optics Letters. vol. 6, no. 10. Oct.. 2008.
Xiaoxue Zhao, Koichi Hasebe, Takahiro Sakaguchi, Fumio Koyama, Connie J. Chang-Hasnain, Nobuhiko Nishiyama, Catherine Canueau, Chung-En Zah. "Tunable optical equalizer using diffraction grating filters". IEEE Photon. Technol. Lett. vol. 20, no. 18, pp. 1590. Sep.. 2008.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Tomoyuki Sengoku, Fumio Koyama. "High-density InAs quantum dots on GaNAs buffer layer". J. Crystal Growth. vol. 310, pp. 5085-5088. Aug.. 2008.
Tomoyuki Miyamoto, Tomohiro Nishina, Yoshihiro Kashihara, Syutaro Ishida, Fumio Koyama. "Thermal resistance reduction of vertical-cavity surface-emitting lasers by thickness-modulated distributed Bragg reflector". Jpn. J. Appl. Phys.. vol. 47, no. 8, pp. 6772-6776. Aug.. 2008.
Yasutaka Higa, Tomoyuki Miyamoto, Hiroshi Nakajima, Kosuke Fujimoto, Fumio Koyama. "Theoretical design of carrier injection rate and recombination rate in tunnel injection quantum well lasers". Physica Status Solidi. vol. 5(c), no. 9, pp. 2838-2840. Jul.. 2008.
Akihiro Imamura, Naoto Kitabayashi, Fumio Koyama. "Beam steering and tilt coupling in tunable hollow waveguide". IEICE Electronics Express. vol. 5, no. 11, pp. .405-410. Jun.. 2008.
Akihiro Imamura, Fumio Koyama. "Modeling and experiment on tapered hollow waveguide multiplexer for multiwavelength VCSEL array". IEICE Electronics Express. vol. 5, no. 12, pp. 451-456. Jun.. 2008.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Generation of Solid-Source H2O Plasma and Its Application to Dry Etching of CaF2". Jpn. J. Appl. Phys.. Vol. 47, No. 6, pp. 5113-5115. Jun.. 2008.
Fumio Koyama. "Investigation and theoretical analysis of low-loss 3Dhollow waveguides for widely tunable photonic devices". Jpn. J. Appl. Phys.. vol. 47, no. 5. May.. 2008.
Fumio Koyama. "Tunable three-dimensional nanostep hollow optical waveguide with low polarization dependence". Applied Physics Express. vol. 1, pp. 052002-1-3. May.. 2008.
Y. Suematsu, Kenichi Iga. "Lasers in Photonics". IEEE JLT. 26, 9, pp. 1132-1144. May.. 2008.
Ayumi Fuchida, Fumio Koyama. "Proposal of total-intemal-reflection optical switch with slowing light in Braggreflector waveguide". IEICE Electronics Express. vol. 5, no. 9, pp. 349-353. May.. 2008.
Kohroh Kobayashi. "A New Loopback Method of All-Optical Label Processing for Label Bit Scalability". IEEE Photonics Technology Letters. Vol. 20, No. 9, pp. 745-747. May.. 2008.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Tomoyuki Sengoku, Fumio Koyama. "Reduction of spacer layer thickness of InAs quantum dots using GaNAs strain compensation layer". Appl. Phys. Lett.. vol. 92, no. 14. Apr.. 2008.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Characterization of H2O-inductively coupled plasma for dry etching". Journal of Physics: Conference Series. Vol. 100, pp. 062022(4pages). Feb.. 2008.
Satoshi Suda, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah. "High speed response of nonlinear optical phase-shifter based on vertical micro-cavity saturable absorber". IEICE ELEX. vol. 5, no. 4, pp. 131-135. Feb.. 2008.
Tomoyuki Kato, Akihiro Matsutani, Takahiro Sakaguchi, Kohroh Kobayashi. "Sub-harmonic mode-locking of VCSEL with a concave external mirror". IEICE Electronics Express. Vol. 5, No. 4, pp. 152-156. Feb.. 2008.

学会発表

Tatsuya Oiwa, Tomohiro Nishina, Tomoyuki Miyamoto. "Phase locking conditions of VCSEL array with Talbot cavity". International Topical Meeting on Information Photonics 2008 (IP2008). Nov.. 2008.
Kyohei Tachi, Tomohiro Nishina, Tomoyuki Miyamoto. "Talbot effect and Lau effect caused by light emitter arrays with a finite number of point light sources". International Topical Meeting on Information Photonics 2008 (IP2008). Nov.. 2008.
P. Babu Dayal, Jun Nakajima, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Multiple-wavelength VCSEL arrays using surface nano-machining process for WDM applications". 21st Annual Meeting of The IEEE Lasers & Electro-Optics Society, LEOS2008. 21st Annual Meeting of The IEEE Lasers & Electro-Optics Society, LEOS2008. TuEE4, pp. 400-401. Nov.. 2008.
Ayumi Fuchida, P. Babu Dayal, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Low Polarization Dependence of Bragg Reflector Slow Light Waveguides". 21st Annual Meeting of The IEEE Lasers & Electro-Optics Society, LEOS2008. WN5, pp. 525-526. Nov.. 2008.
Koichi Hasebe, Takahiro Sakaguchi, Yusuke Mada, Fumio Koyama, Xiaoxue Zhao. "Bandwidth Enhancement of Directly Modulated DFB Lasers and EML Lasers using Optical Equalizers". 21st Annual Meeting of The IEEE Lasers & Electro-Optics Society, LEOS2008. WV4, pp. 593-594. Nov.. 2008.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Dry Etching of Si by XeF2 Plasma and Investigation of Emission Intensities from Xe and F in XeF2 Plasma". 21st International Microprocessees and Nanotechnology Conference. 29D-9-58. Oct.. 2008.
Fumio Koyama. "VCSELs: their 30 years history and new challenges". Asia Pacific Optical Communications, APOC2008. 7135-18. Oct.. 2008.
Masahiro Suzuki, Hiroyuki Uenohara. "First Demonstration of 10-Gbit/s Operation of an All-Optical Error Detection Circuit". 34th European Conference on Optical Communication (ECOC2008). P3.5. Sep.. 2008.
Takayoshi Mori, Hiroyuki Uenohara. "Behavior of carrier plasma effect and thermal drift of a SSG-DBR-LD in wavelength switching". Conference on Optical Internet 2008 (COIN2008). C-16-AM2-2-1. Sep.. 2008.
Tomoyuki Kato, Akihiro Matsutani, Takahiro Sakaguchi, Kohroh Kobayashi. "24GHz Mode-Locking of VCSEL with External Concave Mirror". ISLC2008. Sep.. 2008.
Tomoyuki Kato, Akihiro Matsutani, Takahiro Sakaguchi, Kohroh Kobayashi. "31 GHz SUB-HARMONIC ACTIVE MODE-LOCKED VCSEL WITH LOW THRESHOLD CURRENT". MOC2008. Sep.. 2008.
Unknown Unknown, Hiroshi Nakajima, Kosuke Fujimoto, Tomoyuki Miyamoto. "Controllable large I-L kink of tunnel injection quantum well lasers". 21st IEEE International Semiconductor Laser Conference (ISLC2009). Sep.. 2008.
Satoshi Suda, Xiaxue Xhao, Fumio Koyama, Connie J. Chang-Hasnain, Nobuhiko Nishiyama Chung-En Zah. "Tunable optical equalizer based on 1.55 µm VCSEL for modulation bandwidth enchancement". ISLC2008. ThB5, pp. 179. Sep.. 2008.
Satoshi Suda, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah. "Optical Compensation of Fiber Nonlinearity Using Vertical Micro-cavity Saturable Absorber". ISLC2008. TuC1, pp. 63. Sep.. 2008.
Keisuke Kuroki, Ayumi Fuchida, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama. "Miniature Optical Gate with VCSEL-based Slow Light Bragg Reflector Waveguide". ISLC2008. TuC3, pp. 67. Sep.. 2008.
Fumio Koyama. "Tuning and slowing light in bragg reflector waveguides". iNOW2008. ThB2, pp. 105. Aug.. 2008.
Go Yazawa, Hiroyuki Uenohara. "40Gb/s Operation Performance of an Optical Serial-to-Parallel Converter with Phase-Shifted Preamble and Mach-Zehnder Delay Interferometers". 13th Optoelectronics and Communications Conference (OECC2008). WeP-3. Jul.. 2008.
Tomoyuki Kato, Akihiro Matsutani, Takahiro Sakaguchi, Kohroh Kobayashi. "Double-path resonance of a mode-locked VCSEL using a concave mirror". OECC/ACOFT 2008. Jul.. 2008.
Unknown Unknown, Hiroshi Nakajima, Kosuke Fujimoto, Tomoyuki Miyamoto. "Energy relaxation control of injection carriers in tunnel injection quantum well lasers". Opto-Electronics and Communications Conference 2008 (OECC/ACOFT 2008). Jul.. 2008.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Tomoyuki Sengoku, Fumio Koyama. "High density InAs quantum dots on GaNAs buffer layer". 14th International Conference of Metalorganic Vapor Phase Epitaxy, IC-MOVPE XIV. Jun.. 2008.
Fumio Koyama. "Recent advances of VCSEL photonics". MBE2008. pp. 27-28. Jun.. 2008.
Hiroyuki Uenohara. "“Semiconductor lasers for high spectral density optical communications”, Workshop on High Spectral Density Optical Communication for Next Generation Network". pp. 56-59. Jun.. 2008.
Xiaoxue Zhao, Bo Zhang, Louis Christen, Devang Parekh, Fumio Koyama, Werner Hofmann, Markus C. Amann, Alan E. Willner, Connie J. Chang-Hasnain. "Data Inversion and Adjustable Chirp in 10-Gbps Directly-Modulated Injection-Locked 1.55-µm VCSELs". Conference on Lasers and Electro-Optics, CLEO. CMW5. May.. 2008.
Fumio Koyama. "Nano-aperture plasmonic VCSELs". 20th Indium Phosphide and Related Materials Conference, IPRM2008. WeA1.2. May.. 2008.
Jun Nakajima, Fumio Koyama. "Nanofabrication of Sub-Wavelength Grating Using Ultra-Fine Nano-Machining Process". Conference on Lasers and Electro-Optics, CLEO. JTuA34. May.. 2008.
Ayumi Fuchida, Fumio Koyama. "Slow Light Total-Internal-Reflection Optical Switch with 90-Degree Bend". Conference on Lasers and Electro-Optics, CLEO. JWA86. May.. 2008.
Ayumi Fuchida, Fumio Koyama. "Total-internal-reflection optical switch with crossing-reflection angle to 90 degree". Conference on Lasers and Electro-Optics. JWA86. May.. 2008.
Koichi Hasebe, Xiaoxue Zhao, Takahiro Sakaguchi, Fumio Koyama, Connie J. Chang-Hasnain, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah. "Bandwidth Enhancement of Directly Modulated DFB Lasers and EML Lasers using Optical Equalizers". Conference on Lasers and Electro-Optics, CLEO. CME1. May.. 2008.
Kosuke Fujimoto, Tomoyuki Miyamoto, Unknown Unknown, Hiroshi Nakajima, Fumio Koyama. "Theoretical Analysis of High Speed Semiconductor Optical Amplifier using Tunneling Injection Structure". Conference on Lasers and Electro-Optics. May.. 2008.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Tomoyuki Sengoku, Fumio Koyama. "Multilayer 1.4μm InAs Quantum dots with thin spacer using GaNAs strain compensation layer". 20th Indium Phosphide and Related Materials Conference, IPRM2008. May.. 2008.
Padullaparthi Babu Dayal, Padullaparthi Babu Dayal, Fumio Koyama. "Polarization Control of μm VCSELs with Plasmonic Gold Nanorod Array". The 54th Spring Meeting of Japan Society of Applied Physics and Related Societies. 29a-SG-7. Apr.. 2008.
Akihiro Imamura, Fumio Koyama. "Beam steering and coupling in tunable hollow waveguide with narrow air core". 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. 13E2-3, pp. 694-695. Apr.. 2008.
P. Babu Dayal, Fumio Koyama. "Multiple wavelength VCSEL arrays with grading a spacer layer". The 55th Spring Meeting of JSAP. 30a-ZQ-6. Mar.. 2008.
Koichi Hasebe, Xiauxue Zhao, Takahiro Sakaguchi, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau. "Bandwidth enhancement with tunable optical equalizer for directly modulated VCSELs". The 55th Spring Meeting of JSAP. 30a-ZQ-4. Mar.. 2008.
P. Babu Dayal, Fumio Koyama. "Polarization behavior of 0.85µm VCSELs integrated with gold nanorods using 3DFDTD simulations". The 55th Spring Meeting of JSAP. 30a-ZQ-3. Mar.. 2008.
Fumio Koyama. "Recent advances of VCSEL photonics". The 2008 Spring Meeting of the German Physical Society. DS7. Feb.. 2008.

その他

Ryoichiro Suzuki, Tomoyuki Miyamoto, Tomoyuki Sengoku, Fumio Koyama. "High density InAs quantum dots on GaNAs buffer layer". 27th Electronic Materials Symposium (EMS-27). Jul.. 2008.

2007

論文

Kohroh Kobayashi, Junya Kurumida, Hiroyuki Uenohara. "All-optical label recognition for time-domain signal using multistage switching scheme based on SOA-MZIs". Electron. Lett.. Vol. 42, No. 23, pp. 1362-1363. Nov.. 2007.
Padullaparthi Babudayal, Fumio Koyama. "Polarization control of 0.85μm vertical-cavity surface-emitting lasers integrated with gold nanorod arrays". Appl. Phys. Lett.. vol. 91, pp. 111107. Nov.. 2007.
Padullaparthi Babudayal, Naoto Kitabayashi, Tomoyuki Miyamoto, Fumio Koyama, T. Kawashima, S. Kawakami. "Polarization control of 1.15µm vertical-cavity surface-emitting lasers using autocloned photonic crystal polarizer". Appl. Phys. Lett.. vol. 91. Jul.. 2007.
Wiganes Janto, Akihiro Matsutani, Fumio Koyama. "Wavelength Tuning of Double-Cavity Micromachined Filter with Electrical and Thermal Actuations". OPTICAL REVIEW. vol. 14, no. 2, pp. 86-90. Mar.. 2007.
Satoshi Shimizu, Kohroh Kobayashi, Hiroyuki Uenohara. "Start-bit detection and gate-pulse generation using phase-modulated preamble for asynchronous packet processing". IEEE Photonics Technology letters. Vol. 19, No. 4, pp. 236-238. Feb.. 2007.

学会発表

Hiroyuki Uenohara. "40Gbps Operation of a Semiconductor Optical DA Converter and its Application to Label Processing". International Joint Workshop on OCDMA and OPS 2007. pp. 91-93. Nov.. 2007.
Sigeru Kanazawa, Kazutaka Takeda, Tomoyuki Miyamoto, Fumio Koyama. "High temperature operation of 1.2 μm single-transverse-mode highly strained GaInAs/GaAs QW laser". SPIE 2007. Nov.. 2007.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Dry Etching of CaF₂by Solid Source H₂O(ice) Plasma". 20th International Microprocesses and Nanotechnology Conference. 6A-4-94, pp. 248-249. Nov.. 2007.
Tomoyuki Kato, Akihiro Matsutani, Takahiro Sakaguchi, Kohroh Kobayashi. "Model-Locked VCSEL with External Cavity Formed by Concave Mirror". No. WEE1, pp. 668-669. Oct.. 2007.
Takayuki Higa, Tomoyuki Miyamoto, Hiroshi Nakajima, Kosuke Fujimoto, Fumio Koyama. "Theoretical design of carrier injection rate and recombination rate in tunnel injection quantum well lasers". 34th International Symposium on Compound Semiconductors, ISSC2007. p. 310. Oct.. 2007.
Tomohiro Nishina, Yoshihiro Kashihara, Syuutarou Ishida, Tomoyuki Miyamoto, Fumio Koyama. "Thermal resistance reduction of GaAs based vertical cavity surface emitting lasers by thickness modulated distributed Bragg reflector". 13th Microoptics Conference, MOC '07. Oct.. 2007.
Fumio Koyama. "VCSEL Photonics - Athermalization and Slowing Down –". Asia Optical Fiber Communication & Optoelectronics Exposition & Conference, AOE 2007. SC2.S5.1, pp. 275-277. Oct.. 2007.
Tomofumi Takeishi, Fumio Koyama. "Giant Tuning Characteristics of Tapered Tunable Hollow Waveguide Bragg Reflector". 20th Annual Meeting of the IEEE Laser and Electro-Optical Society, LEOS2007. ThK3, pp. 769-770. Oct.. 2007.
Ayumi Fuchida, Fumio Koyama. "Total-Internal-Reflection Optical Switch with Slowing Light in Bragg Reflector Waveguide". 20th Annual Meeting of the IEEE Laser and Electro-Optical Society, LEOS2007. 20th Annual Meeting of The IEEE Laser and Electro-Optical Society, LEOS2007. No. MK2, pp. 88-89. Oct.. 2007.
Satoshi Suda, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah. "Transient Behavior of Nonlinear Optical Compensator Based on Vertical Micro-Cavity Saturable Absorber". 33th European Conference and Exhibition on Optical Communication, ECOC07. P-42. Sep.. 2007.
Keisuke Kuroki, Go Hirano, Fumio Koyama, Koichi Hasebe, Takahiro Sakaguchi. "Slow Light Waveguide Detector Slowing Loght in Bragg Reflector Waveguide". 33rd European Conference and Exhibition on Optical Communication, ECOC07. P-49. Sep.. 2007.
Kengo Sawada, Hiroyuki Uenohara. "First demonstration of 40-Gbit/s operation of a semiconductor integrated optical digital-to-analog converter". 33th European Conference on Optical Communication (ECOC2007). pp. P037. Sep.. 2007.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Decreasing of Residual Oxygen by using Si Solid Source in Cl2 -ICP Etching of Al". 18th International Symposium on Plasma Chemistry, ISPC18. Aug.. 2007.
Yusuke Takanashi, Junya Kurumida, Hiroyuki Uenohara, Kohroh Kobayashi. "A study on the Timing Adjustable Optical Regenerator using Cross Phase Modulation based on Semiconductor Optical Amplifiers". Photonics in Switching 2007 (PS2007). pp. WB4.4. Aug.. 2007.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Fumio Koyama. "Reduction of spacer layer thickness of InAs quantum dots using GaNAs strain compensation layer". The 7th Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 2007. Aug.. 2007.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Plasma characterization of H2O-inductively coupled plasma for dry etching". 17th International Vacuum Congress, IVC-17. PSTFP4-187. Jul.. 2007.
Fumio Koyama. "New Functions and Challenges of VCSEL-related Photonic Devices". International Nano-Optoelectronic Workshop, iNOW 2007. International Nano-Optoelectronic Workshop, iNOW 2007. Jul.. 2007.
Kensuke Okamoto, Hiroyuki Uenohara. "Demonstration of a Semiconductor-based Multi-Wavelength Light Source and its Application to Optical Label Processing". 12th Optoelectronics and Communications Conference / 16th International Conference on Integrated Optics and Optical Fiber Communication (OECC/IOOC2007). pp. 13A3-3. Jul.. 2007.
Hiroshi Nakajima, Tomoyuki Miyamoto, Takahiro Iwasaki, Unknown Unknown, Fumio Koyama. "Analysis of large kink mechanism in I-L characteristics of tunnel injection lasers". 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. Jul.. 2007.
Tomofumi Takeishi, Satoshi Suda, Fumio Koyama. "Nanoimprint and nano-machinning process for tunable hollow wavegiude devices". IEEE LEOS Summer Topicals. TuB4.5, pp. 123-124. Jul.. 2007.
Akihiro Matsutani, Naoki Jogan, Fumio Koyama, Kohroh Kobayashi. "Etching Chracteristics of Low-k Polymer for Wide Modulation Bandwidth VCSELs". 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. 11P-27, pp. 274-275. Jul.. 2007.
Satoshi Suda, Fumio Koyama. "High Speed Response of Optical Nonlinear Phase Shifter Based on 1.55 μm VCSEL". International Nano-Optoelectronic Workshop, iNOW 2007. 84, pp. 278-279. Jul.. 2007.
Naoto Kitabayashi, Akihiro Imamura, Akihiro Matsutani, Fumio Koyama. "Tapered Hollow Waveguide Multiplexer for Multi-wavelength VCSEL array". 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. 12D4-2, pp. 410-411. Jul.. 2007.
Koichi Hasebe, Wiganes Janto, Nobuhiko Nishiyama, Catherine Caneau, Takahiro Sakaguchi, Akihiro Matsutani, Fumio Koyama, Chung-En Zah. "Transverse-mode and Polarization Characteristics of 1.55 μm Micromachined VCSELs". 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. No. 12D4-3, pp. 412-413. Jul.. 2007.
Keisuke Kuroki, Go Hirano, Fumio Koyama. "Modeling of Slow Light Modulator with Tilt Coupling Scheme". 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. 12D4-5, pp. 416-417. Jul.. 2007.
Tomofumi Takeishi, Takahiro Sakaguchi, Fumio Koyama. "Fabrication and characterization of tunable chromatic dispersion compensator based on hollow waveguide". 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. 12E3-3, pp. 442-443. Jul.. 2007.
Akihiro Imamura, Fumio Koyama. "Beam steering and coupling in tunable hollow waveguide with narrow air core". 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber CommunicationOECC/IOOC2007. 13E2-3, pp. 694-695. Jul.. 2007.
Satoshi Suda, Fumio Koyama. "Modeling of Optical Nonlinear-Effect Compensator With Vertical-Cavity Saturable Absorber". 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. 12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication, OECC/IOOC2007. Vol. 10D2-5, pp. 74-75. Jul.. 2007.
Hiroyuki Uenohara, Kengo Sawada. "Investigation of Operation Tolerance of a Semiconductor Optical Digital-to-Analog Converter on Phase and Intensity Fluctuation". Conference on Opitcal Internet / Australian Conference on Fiber Technology (COIN/ACOFT2007). pp. WeB3-5. Jun.. 2007.
Satoshi Suda, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah. "High Speed Response of Optical Nonlinear Phase Shifter Based on 1.55 μm VCSEL". CLEO 2007. CMP6. May.. 2007.
Fumio Koyama, Tomoyuki Miyamoto. "Recent advances of VCSEL technologies". "International Conference on Indium Phosphide and Related Materials, IPRM2007". May.. 2007.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Fumio Koyama. "Post-annealing effects on emission characteristics of InAs quantum dots on GaNAs buffer layer". "International Conference on Indium Phosphide and Related Materials, IPRM2007". May.. 2007.
Go Hirano, Fumio Koyama. "Slowing Light in Bragg Reflector Waveguide with Tilt Coupling Scheme". 20th Annual Meeting of The IEEE Laser and Electro-Optical Society, LEOS2007. 20th Annual Meeting of The IEEE Laser and Electro-Optical Society, LEOS2007. MK1, pp. 86-87. May.. 2007.
P. Babu Dayal, Fumio Koyama. "Polarization Control of VCSELs using Gold Nanorod Array". OPE2007. pp. 35-40. Apr.. 2007.
Padullaparthi Babudayal, Fumio Koyama. "Polarization Controlled 0.85 μm VCSELs with Plasmonic Nanorods". CLEO 2007. CLEO 2007. CThB2. Mar.. 2007.
Go Hirano, Fumio Koyama, Koichi Hasebe, Takahiro Sakaguchi, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah. "Slow light modulator with Bragg reflector waveguide". Optical Fiber Communications Conference 2007. PDP34. Mar.. 2007.
Naoto Kitabayashi, Akihiro Matsutani, Fumio Koyama. "Tapered Hollow Waveguide Multiplexer for Multi-wavelength VCSEL array". The 54th Spring Meeting of Japan Society of Applied Physics and Related Societie. The 54th Spring Meeting of Japan Society of Applied Physics and Related Societie. 29a-SG-8. Mar.. 2007.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Plasma Characterization by Optical Emission Analysi". The 54th Spring Meeting of Japan Society of Applied Physics and Related Societies. The 54th Spring Meeting of Japan Society of Applied Physics and Related Societies. 27a-SM-2. Mar.. 2007.
Naoki Jogan, Takeshi Uchida, Akihiro Matsutani, Tomoyuki Miyamoto, Kohroh Kobayashi. "Wide modulation bandwidth VCSELs with side current injection and copper-plated heatsink". Mar.. 2007.

2006

論文

Fumio Koyama. "Recent Advances of VCSEL Photonics". IEEE J. Lightwave Technol.. vol. 24, no. 12, pp. 4502-4513. 2006.
Wiganes Janto, Akihiro Matsutani, Fumio Koyama. "Design, Fabrication, and Characterization of Tunable Micromachined Filter with Double-Cavity Structure". Jpn. J. Appl. Phys.. Vol. 45, No. 10A, pp. 7732-7736. Oct.. 2006.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Solid Source Dry Etching Process for GaAs and InP". Jpn. J. Appl. Phys.. Vol. 45, No. 10B, pp. 8374-8377. Oct.. 2006.
Kenichi Iga. "Vertical cavity surface emitting lasers photonics". Jpn. J. Appl. Phys.. vol. 45, no. 8B, pp. 6541-6543. Aug.. 2006.
Chang-Hwan Bae, Fumio Koyama. "Design and Fabrication of Multi-Mode Interference Hollow Waveguide Optical Switch with Variable Air Core". Jpn. J. Appl. Phys. Vol. 45, No. 8B, pp. 6648-6653. Aug.. 2006.
Kazutaka Takeda, Tomoyuki Miyamoto, Takashi Kondo, Yasuhiro Uchiyama, Naoto Kitabayashi, Takeshi Uchida, Akihiro Matsutani, Fumio Koyama. "Wavelength extension effect on lasing characteristics of highly-strained GaInAs/GaAs vertical-cavity surface-emitting lasers with cavity detuning". Jpn. J. Appl. Phys.. vol. 45, no. 8B, pp. 6691-6696. Aug.. 2006.
Koichi Hasebe, Fumio Koyama. "Modeling of All-Optical-Signal Processing Devices Based on Two-Mode Injection-Locked Vertical-Cavity Surface-Emitting Laser". Jpn. J. Appl. Phys. Vol. 45, No. 8B, pp. 6697-6703. Aug.. 2006.
Syuutarou Ishida, Tomoyuki Miyamoto, Fumio Koyama. "Short-period GaInAs/InP superlattice for distributed Bragg reflector". Jpn. J. Appl. Phys.. vol. 45, no. 28, pp. L723-L725. Jul.. 2006.
Fumio Koyama, Miura Toru, Yasuki Sakurai. "Tunable Hollow Optical Waveguides and Their Applications for Photonic Integrated Circuits". Electronics and Communications in Japan. vol. 89, no. 4, pp. 9-18. Jun.. 2006.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Tetsuya Matsuura, Fumio Koyama. "Photoluminescence characterization of InAs quantum dots on GaNAs buffer layer by metalorganic chemical vapor deposition". Jpn. J. Appl. Phys.. vol. 45, no. 23, pp. L585-L587. Jun.. 2006.
Tetsuya Matsuura, Tomoyuki Miyamoto, Fumio Koyama. "Topological characteristics of InAs quantum dot with GaInAs cover using Sb surfactant". Appl. Phys. Lett.. vol. 88, no. 18. May.. 2006.
Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama. "Effect of index variation in active layer on transverse mode for vertical-cavity surface-emitting lasers". Jpn. J. Appl. Phys.. vol. 45, no. 4A. Apr.. 2006.
Yutaka Onishi, Nobuhiko Nishiyama, Catherine Caneau, Fumio Koyama, Chung-En Zah. "All-Optical Regeneration Using Transverse Mode Switching in Long-Wavelength Vertical-Cavity Surface-Emitting Lasers". Jpn. J. Appl. Phys. Vol. 45, No. 17, pp. L467-L468. Apr.. 2006.
Hiroyuki Uenohara, S. Shimizu, K. Kobayashi. "Demonstration of an Optical Label Switch using an Optical Digital-to-Analog Conversion-Type Label Processor with a Self-Gate-Pulse Generator and a Power Equalizer". in IEEE Photon. Technol. Lett.. Vol. 18, No. 5, pp. 694-696. Mar.. 2006.
Yasuki Sakurai, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "Tunable Planar Air-Core Resonator Based on Tunable Hollow Waveguide". Jpn. J. Appl. Phys. Vol. 45, No. 11, pp. L326-L328. Mar.. 2006.
Yasuki Sakurai, Akihiro Matsutani, Fumio Koyama. "Tunable stop-band hollow waveguide Bragg reflector with tapered air-core for adaptive dispersion-compensation". Appl. Phys. Lett.. Vol. 88, No. 12, pp. 121103. Mar.. 2006.

学会発表

P. Babu Dayal, Jiro Hashizume, Fumio Koyama. "Polarization control of 0.85 μm GaAs VCSELs using Au-Sio2 nanostructures". Photonics 2006. ThD2. 2006.
Hiroyuki Uenohara. "Optical label processing scheme using optical digital-to-analog converters and self-gate pulse generator with phase modulated preamble". Joint workshop on OPS and OCDMA. 2006.
Fumio Koyama. "Nano-aperture VCSELs". 2006 IEEE LEOS Annual Meeting Conference, LEOS 2006. WB1, pp. 442-443. Oct.. 2006.
Yasushi Yokota, Fumio Koyama. "Tunable Spot Size Converter and Vertical Resonant Coupler Based on Hollow Optical Waveguide". 32th European Conference on Optical Communication, ECOC. 32th European Conference on Optical Communication, ECOC. We3.p.76. Sep.. 2006.
Satoshi Suda, Go Hirano, Fumio Koyama, Catherine Caneau, Chung-En Zah. "Optical Nonlinear-Effect Compensator Based on Vertical-cavity Saturable Absorber". 32th Europian Conference on Optical Communication, ECOC. Th1.4.7. Sep.. 2006.
Go Hirano, Fumio Koyama. "Modeling of Vertical-cavity Electro-absorption Modulator with High-Q factor Resonator". Asia-Pacific Optical Communications Conference, APOC2006. 6352-34,4a. Sep.. 2006.
Wiganes Janto, Koichi Hasebe, Nobuhiko Nishiyama, Catherine Caneau, Takahiro Sakaguchi, Akihiro Matsutani, P. Babu Dayal, Fumio Koyama, Chung-En Zah. "Athermal operation of 1.55 μm InP-based VCSEL with thermally-actuated cantilever structure". 20th International Semiconductor Laser Conference. 20th International Semiconductor Laser Conference. PD1.1. Sep.. 2006.
Hideaki Yamakawa, Fumio Koyama. "Hybrid-Integrated Tunable Hollow Waveguide DBR Laser". 32th European Conference on Optical Communication, ECOC. We.p.54. Sep.. 2006.
Satoshi Shimizu, Hiroyuki Uenohara, Kohroh Kobayashi . "A Novel Scheme of Start Bit Detection and Single Pulse Generation for High-Speed Optical Signal Processing". ECOC2006. pp. Th2.4.2. Sep.. 2006.
Sigeru Kanazawa, Kazutaka Takeda, Tomoyuki Miyamoto, Fumio Koyama. "High temperature operation of 1.2μm single-transverse-mode highly strained GaInAs/GaAs QW laser". Asia-Pacific Optical Communications Conference, APOC2006. No. 6352-24. Sep.. 2006.
Padullaparthi Babudayal, Takashi Kawashima, Naoto Kitabayashi, Tomoyuki Miyamoto, Fumio Koyama, S. Kawakami. "Polarization control of 1.2µm single-mode VCSELs using photonic crystal polarizer". "20th International Semiconductor Laser Conference, ISLC2006". Sep.. 2006.
Jiro Hashizume, Padullaparthi Babudayal, Fumio Koyama. "Metal Nano-aperture VCSEL for Near-Field Optics and Polarization Control". 20th International Semiconductor Laser Conference, ISLC2006. WB1, pp. 101-102. Sep.. 2006.
Satoshi Suda, Go Hirano, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah. "Tunable Optical Delay and Nonlinear Phase Shift using 1.55 µm VCSEL". EEE ISLC2006. WC4, pp. 121-122. Sep.. 2006.
Fumio Koyama. "VCSEL Integration for Silicon Photonics". 2006 3rd IEEE International Conference, ⅣPhotonics. ThB4, pp. 194-196. Sep.. 2006.
Keisuke Kuroki, Fumio Koyama. "Propasal and Modeling of miniature Slow Light Modulator Integrated with VCSEL". 12th Microoptics Conference, MOC. J-1, pp. 222- 223. Sep.. 2006.
Hideaki Yamakawa, Fumio Koyama. "Athermal GaInAsP/InP Semiconductor Laser Using Hollow Waveguide Distributed Bragg Reflector". 12th Microoptics Conference, MOC. A-2, pp. 38-39. Sep.. 2006.
Hiroyuki Uenohara, Kohroh Kobayashi. "All-Optical Label and Payload Separation using a Self-switching Technique of a SOA-MZI". 32th European Conference on Optical Communication（ECOC）. Sep.. 2006.
Kohroh Kobayashi. "R&D on Next-Generation Optical Communications and Broadband in Japan". 32th European Conference on Optical Communication（ECOC）. Sep.. 2006.
Kohroh Kobayashi. "R&D on Next-Generation Optical Communications and Broadband Acess in Japan". ECOC2006. ECOC2006. Sep.. 2006.
Satoshi Shimizu, Hiroyuki Uenohara, Kohroh Kobayashi. "A novel scheme of start bit detection and single pulse generation for high-speed optical signal processing". 32th European Conference on Optical Communication (ECOC2006). Sep.. 2006.
Kohroh Kobayashi. "All-optical label and payload separation using a self-switching technique of a SOA-MZI". ECOC2006. ECOC2006. Sep.. 2006.
Wiganes Janto, Akihiro Matsutani, Fumio Koyama. "Double-Cavity Micromachined Filter With Electrical Actuation". The 11th Opticalelectoronics and Communications Conference, OECC 2006. The 11th Opticalelectoronics and Communications Conference, OECC 2006. 5B1-3-1. Jul.. 2006.
Hideaki Yamakawa, Tomoyuki Serizawa, Yasuki Sakurai, Fumio Koyama. "Tunable Laser with Hollow Waveguide Distributed Bragg Reflector". OECC 2006. 6C2-2-1. Jul.. 2006.
Junya Kurumida, Hiroyuki Uenohara, Kohroh Kobayashi. "All-optical time domain label separation by SOA-MZI self-switching scheme". OECC2006. OECC2006. pp. 5E4-3-1. Jul.. 2006.
Makoto Ohkado, Hiroyuki Uenohara. "Demonstration of an optical label switch with an EA modulator-cascaded optical serial-to-parallel converter". 5th International Conference on Optical Internet (COIN2006). pp. TuA2-4. Jul.. 2006.
Junya Kurumida, Hiroyuki Uenohara, Kohroh Kobayashi. "All-optical Time Domain Label Separation by SOA-MZI Self-switching Scheme". The 11th Opticalelectoronics and Communications Conference（OECC 2006）. No. 5E4-3-1. Jul.. 2006.
Kengo Sawada, Hiroyuki Uenohara. "Operation performance of a semiconductor integrated optical digital-to-analog converter by external phase control". 12th Microoptics Conference (MOC2006). Jul.. 2006.
Koichi Hasebe, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah. "All-optical Polarization Controller Using Elliptical-Apertured 1.5μm VCSEL". Conference on Lasers and Electro-Optics, CLEO 2006. Conference on Lasers and Electro-Optics（CLEO 2006）. CWP1. May.. 2006.
Satoshi Suda, Fumio Koyama, Nobuhiko Nishiyama, Catherine Caneau, Chung-En Zah. "Optical Nonliner Phase Shifter Using Vertical Microcavity with Saturable Absorber". Conference on Lasers and Electro-Optics, CLEO 2006. Conference on Lasers and Electro-Optics, CLEO 2006. CWK3. May.. 2006.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Tetsuya Matsuura, Fumio Koyama. "Wavelength elongation and improved emission efficiency of InAs quantum dots on GaNAs buffer layer". "13th International Conference on Metal Organic Vapor Phase Epitaxy, ICMOVPE-XIII". May.. 2006.
Tetsuya Matsuura, Tomoyuki Miyamoto, Fumio Koyama. "Polarization characteristics of Sb-introduced Ga(In)As covered InAs quantum dots". "International Conference on Indium Phosphide and Related Materials, IPRM2006". pp. 344-347. May.. 2006.
Yasuki Sakurai, Hideaki Yamakawa, Yasushi Yokota, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama. "Hollow Waveguide Distributed Bragg Reflector for Widely Tunable Optical Devices". Optical Fiber Communications Conference 2006. Optical Fiber Communications Conference 2006. OtuM4. Mar.. 2006.
Junya Kurumida, Hiroyuki Uenohara, Kohroh Kobayashi. "All-optical Label Recognition with SOA-MZI Multistage Switching Scheme". OFC2006. OFC2006. pp. JThB51. Mar.. 2006.
Junya Kurumida, Hiroyuki Uenohara, Kohroh Kobayashi. "All-optical Label Recognition with SOA-MZI Multistagr Switching Scheme". Optical Fiber Communications Conference 2006（OFC2006）. No. JThB51. Mar.. 2006.

2005

論文

Hiroyuki Uenohara, R. Kurosawa. "Semiconductor optical digital-to-analogue converter". Electronics Letters (The Institute of Electrical Engineers). Vol. 41, No. 23, pp. 1299-1300. Nov.. 2005.
Maiko Ariga, Masakazu Arai, Takeo Kageyama, C. Setiagung, Yoshihiko Ikenaga, N. Iwai, Hitoshi Shimizu, K. Nishikawa, Akihiko Kasukawa, Fumio Koyama. "Noise Characteristics of GaInNAsSb 1300-nm-Range VCSEL with Optical Feedback for Isolator-Free Module". IEEE J. Select. Top. Quantum Electron.. vol. 11, no. 5, pp. 1074-1078. Sep.. 2005.
Yutaka Onishi, Nobuhiko Nishiyama, Catherine Caneau, Fumio Koyama, Chung-En Zah. "All-optical Inverter Based on Long-Wavelength Vertical-Cavity Surface0Emitting Laser". IEEE J. Select. Top. Quantum Electron. vol. 11, no. 5, pp. 999-1005. Sep.. 2005.
Satoshi Suda, Fumio Koyama. "Characterization of spot-size dependence of coarse wavelength division multiplexing dielectric multilayer thin-film filters for planner lightwave circuit platforms". Jpn. J. Appl. Phys.. vol. 44, no. 39, pp. L1225-L1227. Sep.. 2005.
Koichi Hasebe, Yutaka Onishi, Fumio Koyama. "All-optical regenerator with re-polarization function based on dual optical injection VCSEL". IEICE ELEX. vol. 2, no. 11, pp. 338-343. Jun.. 2005.
Koichi Hasebe, Yutaka Onishi, Fumio Koyama. "Novel polarization controller based on injection-locked vertical-cavity surface-emitting laser". IEICE ELEX. vol. 2, no. 8, pp. 274-279. May.. 2005.
Chang-Hwan Bae, Fumio Koyama. "Fabrication and characterization of hollow waveguide optical switch with variable air core". OPTICS EXPRESS. vol. 13, no. 9, pp. 3259-3263. May.. 2005.
Tetsuya Matsuura, Tomoyuki Miyamoto, Masataka Ohta, Yasutaka Matsui, Tatsuya Furuhata, Fumio Koyama. "PL characteristics of InAs quantum dots with Sb irradiation in growth interruption". J. Crystal Growth. vol. 278, no. 1-4, pp. 51-56. May.. 2005.
Masataka Ohta, Tomoyuki Miyamoto, Takeo Kageyama, Tetsuya Matsuura, Yasutaka Matsui, Tatsuya Furuhata, Fumio Koyama. "Sb surfactant effect on highly strained GaInAs/GaAs quantum well grown by molecular beam epitaxy". J. Crystal Growth. vol. 278, no. 1-4, pp. 521-525. May.. 2005.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Iodine solid source inductively coupled plasma etching of InP". Jpn. J. Appl. Phys.. vol. 44, no. 19, pp. L576-L577. May.. 2005.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Iodine Solid Source Inductively Coupled Plasma Etching of InP". Japanese Journal of Applied Physics. Vol. 44, No. 19, pp. L576-L577. Apr.. 2005.
Hiroyuki Uenohara, Takeshi Seki. "Investigation of Wavelength Switching Performance of a SSG-DBR-LD for Optical Packet Switch Application". Vol. E88-C, No. 3, pp. 303-308. Mar.. 2005.

学会発表

Fumio Koyama. "New Functions and Emerging Technologies for VCSEL-related Device". International Symposium on Asia-Pacific Optical Communications 2005, APOC2005. International Symposium on Asia-Pacific Optical Communications 2005, APOC2005. Nov.. 2005.
Hiroyuki Uenohara, H. Takeda. "Cascaded wavelength converter for optical regeneration". APOC2005. pp. 6020-53. Nov.. 2005.
M. Ohkado, Hiroyuki Uenohara. "Performance of Two-Bit Optical Serial-to-Parallel Converter using Cascaded Electroabsorption Modulators". 11th Microoptics Conference. pp. K4. Nov.. 2005.
Fumio Koyama. "Modelling of high-speed polarization controller based on injection-locked two-mode VCSEL". 11th Microoptics Conference, MOC'05. 11th Microoptics Conference, MOC'05. M2. Oct.. 2005.
H. Takeda, Hiroyuki Uenohara. "Improvement of Transmission Characteristics With Chirping Control Scheme in Optical Signal Regenerator Using SOA Gain Saturation and XGM Signal". The 18th Annual Lasers and Electro Optics Society Meeting (LEOS2005). pp. MO2. Oct.. 2005.
Takeshi Uchida, Tomoyuki Miyamoto, Takahiro Sakaguchi, Fumio Koyama. "High-Order Transverse Mode Suppression in VCSELs with Temperature-Profile Control". The 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Oct.. 2005.
Yasuhiro Uchiyama, Takashi Kondo, Kazutaka Takeda, Akihiro Matsutani, Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama. "Electro-thermal wavelength tuning of 1.2µm GaInAs/GaAs vertical cavity surface emitting laser array". The 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Oct.. 2005.
Kazutaka Takeda, Tomoyuki Miyamoto, Takashi Kondo, Yasuhiro Uchiyama, Akihiro Matsutani, Takeshi Uchiyama, Fumio Koyama. "Wavelength Extension with Cavity Detuning in Vertical Cavity Surface Emitting Lasers". 11th Microoptics Conference. Oct.. 2005.
Miura Toru, Yasushi Yokota, Fumio Koyama. "Proposal of tunable demultiplexer based on tapered hollow waveguide with highly reflective multilayer mirrors". 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society, LEOS2005. 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society, LEOS2005. TuL3, pp. 272-273. Oct.. 2005.
Jiro Hashizume, Fumio Koyama. "Transverse and polarization mode controlled vertical cavity surface emitting laser with metal nano-aperture array for optical near-field". 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society, LEOS2005. 18th Annual Meeting of the IEEE Lasers and Electro-Optics Society, LEOS2005. WK3, pp. 467-468. Oct.. 2005.
Fumio Koyama. "Air-core Resonator with Widely Tunable Hollow Waveguide Bragg Reflectors". 31st European Conference on Optical Communication, ECOC2005. 31st European Conference on Optical Communication, ECOC2005. Sep.. 2005.
Hiroyuki Uenohara, S. Shimizu, K. Kobayashi. "Switching Performance of an Optical Label Switch using Optical Digital-to-Analog Conversion-based Header Processor with Self-Gate-Pulse-Generator and Power Equalizer". 31th European Conference on Optical Communication(ECOC2005). pp. Th3.4.1. Sep.. 2005.
Hiroyuki Uenohara, R. Kurosawa. "First Demonstration of a Semiconductor-Integrated Optical Digital-to-Analog Converter". 31th European Conference on Optical Communication(ECOC2005). pp. Tu3.6.4. Sep.. 2005.
Tetsuya Matsuura, Tomoyuki Miyamoto, Masataka Ohta, Fumio Koyama. "Photoluminescence Characterization of (Ga)InAs Quantum Dots with GaInAsSb Cover Layer Grown by MBE". 32th International Symposium on Compound Semiconductors. Sep.. 2005.
Masataka Ohta, Tatsuya Furuhata, Tetsuya Matsuura, Yasutaka Matsui, Tomoyuki Miyamoto, Fumio Koyama. "MBE Growth of High Quality Highly Strained GaInAs/GaAs QWs for 1200nm Lasers". 32th International Symposium on Compound Semiconductors. Sep.. 2005.
Ryoichiro Suzuki, Tomoyuki Miyamoto, Tetsuya Matsuura, Fumio Koyama. "InAs Quantum Dot formed on GaNAs Buffer Layer by Metalorganic Chemical Vapor Deposition". 32th International Symposium on Compound Semiconductors. Sep.. 2005.
Fumio Koyama. "Widely Tunable Micromachined Optical Devices for Future Photonic Integrated Circuits". FIS Conference on future integrated. FIS Conference on future integrated. p. 24. Aug.. 2005.
Hiroyuki Uenohara, S. Shimizu, .and K. Kobayashi. "Operation performance of an optical digital-to-analog converter with regeneration-type power equalization". 10th Opto-Electronics and Communication Conference(OECC2005). pp. 6B3-4. Jul.. 2005.
Y. Takase, Hiroyuki Uenohara. "Switching performance of a novel optical label switch with time domain separated WDM labels". IQEC and CLEO-PR2005. pp. CFJ4-4. Jul.. 2005.
Junya Kurumida, Y. Tatara, Hiroyuki Uenohara, Kohroh Kobayashi. "All-optical header recognition sub-system based on SOA-MZE switches". IQEC2005 and CLEO/PR2005. IQEC2005 and CLEO/PR2005. pp. CFJ4-5, 1790-1791. Jul.. 2005.
Masataka Ohta, Tomoyuki Miyamoto, Tetsuya Matsuura, Yasutaka Matsui, Tatsuya Furuhata, Takahiro Iwasaki, Yoshihiro Kashihara, Fumio Koyama. "Structure dependence of lasing characteristics of GaInAs/AlGaAs tunnel injection lasers". International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005. Jul.. 2005.
Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama. "Transverse mode control in VCSELs with temperature-profile control". International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005. Jul.. 2005.
Yutaka Onishi, Nobuhiko Nisiyama, Athaline Caneau, Fumio Koyama. "All-optical regeneration based on vertical-cavity surface-emitting lasers". International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005, IQEC and CLEO-PR 2005. International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005, IQEC and CLEO-PR 2005. CTuJ2-3, pp. 162-163. Jul.. 2005.
Koichi Hasebe, Yutaka Onishi, Fumio Koyama. "Novel polarization controller based on injection vertical-cavity surface emitting laser". International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005, IQEC and CLEO-PR 2005. International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005, IQEC and CLEO-PR 2005. CTuJ2-4, pp. 164-165. Jul.. 2005.
Jiro Hashizume, Fumio Koyama. "Polarization controlled VCSEL with metal nano-structure for near-field optics". International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005. International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005. CTuJ3-1, pp. 284-285. Jul.. 2005.
Chang-Hwan Bae, Fumio Koyama. "Fabrication and characterization of hollow waveguide optical switch with variable air core". 10th Optoelectronics and Communications Conference, OECC2005. 7E2-5, pp. 452-453. Jul.. 2005.
Wiganes Janto, Fumio Koyama, Akihiro Matsutani. "Tunable Narrowband Optical Micromachined Filter with Double-Cavity Structure". 10th Optoelectronics and Communications Conference, OECC2005. 10th Optoelectronics and Communications Conference, OECC2005. 7E3-7, pp. 466-467. Jul.. 2005.
Satoshi Suda, Fumio Koyama. "Measurement and Modeling of Spot-size Dependence of CWDM Dielectric Multilayer Thin-film Filters". 10th Optoelectronics and Communications Conference, OECC2005. 10th Optoelectronics and Communications Conference, OECC2005. 5E2-5, pp. 92-93. Jul.. 2005.
Yasuki Sakurai, Akihiro Matsutani, Fumio Koyama. "Tunable Stop-Band Hollow Waveguide Bragge Reflector with Tapered Air-Core for Adaptive Dispersion-Compensation". Conference on Lasers and Electro-Optics, CLEO2005. Conference on Lasers and Electro-Optics, CLEO2005. CPDA6, CMP5. May.. 2005.
Tetsuya Matsuura, Tomoyuki Miyamoto, Masataka Ohta, Fumio Koyama. "Topological Characteristics of MBE Grown Sb-Introduced Ga(In)As Covered InAs Quantum Dots on GaAs". International Conference on Indium Phosphide and Related Materials. May.. 2005.
Jiro Hashizume, Fumio Koyama. "Plasmon enhanced optical near-field in metal-nano-aperture VCSEL with tight transverse mode confinement". Nanophotonics for Information Systems, NPIS. Nanophotonics for Information Systems, NPIS. NFA4. Apr.. 2005.
Yasuki Sakurai, Yasushi Yokota, Akihiro Matsutani, Fumio Koyama. "Temperature Insensitive Operation of Widely Tunable Hollow Waveguide Grating". Conference on Optical Fiber Communications, OFC2005. Conference on Optical Fiber Communications, OFC2005. OME30. Mar.. 2005.

2004

論文

Yasuhiro Uchiyama, Takashi Kondo, Kazutaka Takeda, Akihiro Matsutani, Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama. "Thermal cross-talk evaluation of densely integrated vertical cavity surface emitting laser array". IEICE Electronics Express. vol. 1, no. 17, pp. 545-550. 2004.
Masataka Ohta, Tomoyuki Miyamoto, Tetsuya Matsuura, Yasutaka Matsui, Tatsuya Furuhata, Fumio Koyama. "Optical quality dependence on growth rate for solid-source MBE grown highly-strained GaInAsSb/GaAs QWs". Jpn. J. Appl. Phys.. vol. 43, no. 12B, pp. L1569-L1571. Nov.. 2004.
Masao Kawaguchi, Tomoyuki Miyamoto, Fumio Koyama. "Improvement in photoluminescence efficiency of GaInNAs/GaAs quantum wells grown by metalorganic chemical vapor deposition for low threshold 1.3μm range lasers". Jpn. J. Appl. Phys.. vol. 43, no. 8A, pp. 5262-5268. Aug.. 2004.
Junji Kinoshita, Tomoyuki Miyamoto, Yutaka Onishi, Fumio Koyama. "Characterization of single-wavelength optically pumped GaInAsP/InP vertical-cavity surface-emitting lasers with dielectric mirrors". Jpn. J. Appl. Phys.. vol. 43, no. 8B, pp. 5928-5932. Aug.. 2004.
Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama. "Analysis on the compensating thermal lensing effect using a convex mirror in vertical-cavity surface-emitting lasers". Jpn. J. Appl. Phys.. vol. 43, no. 8B, pp. 5933-5936. Aug.. 2004.
Takeo Kageyama, Tomoyuki Miyamoto, Masataka Ohta, Tetsuya Matsuura, Yasutaka Matsui, Tatsuya Furuhata, Fumio Koyama. "Sb surfactant effect on GaInAs/GaAs highly strained quantum well lasers emitting at 1200 nm-range grown by molecular beam epitaxy". J. Appl. Phys.. vol. 96, no. 1, pp. 44-48. Jul.. 2004.
Akihiro Matsutani, Hideo Ohtsuki, Ken Ohashi, Tomonori Yokoyama, Hirokazu Yamakage, Fumio Koyama. "Vertical and Smooth Microfabrication of InP Using Simple High-Density Plasma System with SmCo Ring Magnet". Jpn. J. Appl. Phys.. Vol. 43, No. 7B, pp. L960-L962. Jul.. 2004.
Yasuki Sakurai, Fumio Koyama. "Tunable hollow waveguide distributed Bragg reflectors with variable air core". Optics Express. vol. 12, no. 13, pp. 2851-2856. Jun.. 2004.
Yutaka Onishi, Nobuhiko Nishiyama, Catherine Caneau, Fumio Koyama, Chung-En Zah. "Dynamic behavior of an all-optical inverter using transverse mode switching in 1.55 μm vertical-cavity surface-emitting lasers". IEEE Photon. Technol. Lett.. vol. 16, no. 5, pp. 1236-1238. May.. 2004.
Tetsuya Matsuura, Tomoyuki Miyamoto, Takeo Kageyama, Masataka Ohta, Yasutaka Matsui, Tatsuya Furuhata, Fumio Koyama. "Surfactant effect of Sb on GaInAs quantum dots grown by molecular beam epitaxy". Jpn. J. Appl. Phys.. vol. 43, no. 5A, pp. L605-L607. May.. 2004.
Jiro Hashizume, Fumio Koyama, . "Plasmon-enhancement of optical near-field of metal nano-aperture surface emitting laser". Appl. Phys. Lett. vol. 84, no. 17, pp. 3226-3228. Apr.. 2004.
Yutaka Onishi, Nobuhiko Nishiyama, Catherine Caneau, Fumio Koyama, Chung-En Zah. "Nonlinear optical input-output characteristics of 1.55 μm injection-locked vertical-cavity surface-emitting lasers". Appl. Phys. Lett.. vol. 84, no. 17, pp. 3247-3249. Apr.. 2004.
Tetsuya Matsuura, Tomoyuki Miyamoto, Shigeki Makino, Masataka Ohta, Yasutaka Matsui, Fumio Koyama. "P-type doping characteristics of GaInNAs:Be grown by solid source molecular beam epitaxy". Jpn. J. Appl. Phys.. vol. 43, no. 4A, pp. L433-L435. Apr.. 2004.
Masao Kawaguchi, Tomoyuki Miyamoto, Atsushi Saitoh, Fumio Koyama. "GaInNAs intermediate layer for improvement of lasing characteristics of GaInNAs quantum well lasers". Jpn. J. Appl. Phys.. vol. 43, no. 4A, pp. L453-L455. Apr.. 2004.
Jong-Hwa Baek, Dae-Sung Song, In-Kag Hwang, Kum-Hee Lee, Y. H. Lee, Takashi Kondo, Tomoyuki Miyamoto, Fumio Koyama. "Transverse mode control by etch-depth tuning in 1120-nm GaInAs/GaAs photonic crystal vertical-cavity surface-emitting lasers". Optics Express. vol. 12, no. 5, pp. 859-867. Mar.. 2004.

学会発表

Takashi Kondo, Yasuhiro Uchiyama, Kazutaka Takeda, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "Highly strained GaInAs/GaAs 1.21 μm vertical cavity surface emitting laser with single-mode output power of 3mW". The 17th Annual Meeting of the IEEE Lasers and Electro-Optics Society, LEOS 2004. Nov.. 2004.
Takashi Kondo, Yasuhiro Uchiyama, Kazutaka Takeda, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "Highly strained GaInAs/GaAs 1.21µm vertical cavity surface emitting laser with single-mode output power of 3mW". The 16th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Nov.. 2004.
Yasuhiro Uchiyama, Takashi Kondo, Kazutaka Takeda, Akihiro Matsutani, Jiro Hashizume, Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama. "1.2 μm band high-density multiple-wavelength vertical cavity surface emitting laser array". The 17th Annual Meeting of the IEEE Lasers and Electro-Optics Society, LEOS2004. Nov.. 2004.
Syuutarou Ishida, Tomoyuki Miyamoto, Fumio Koyama. "GaInAs/InP superlattice DBR for long-wavelength VCSELs". International Conference on Solid State Device and Materials. Sep.. 2004.
Tetsuya Matsuura, Tomoyuki Miyamoto, Masataka Ohta, Yasutaka Matsui, Tatsuya Furuhata, Fumio Koyama. "PL Characteristics of InAs Quantum Dots with Sb Irradiation in Growth Interruption". The 13th International Conference on Molecular Beam Epitaxy 2004. The 13th International Conference on Molecular Beam Epitaxy. pp. MC1.3. Aug.. 2004.
Wiganes Janto, Fumio Koyama, Akihiro Matsutani. "GaAs/GaAiAs Micromachined Double-Cavity Structure for Tunable Filter and Dispersion Compensator". OptoElectronics and Communications Conference/International Conference on Optical Internet. OptoElectronics and Communications Conference/International Conference on Optical Internet, OECC/COIN2004. PD2-2. Jul.. 2004.
K. Kim, Fumio Koyama, M. Kadoya, Tatsuo Izawa. "ModelinG.f Second Harmonic Generation from Intra-Cavity Surface-Emitting Lasers with Nonlinear Crysta". OptoElectronics and Communications Conference/International Conference on Optical Internet. 13P-107. Jul.. 2004.
Satoshi Suda, Fumio Koyama. "Spot-Size Dependence of Dispersion Characteristics of Dielectric Multilayer Thin-film Filters". OptoElectronics and Communications Conference/International Conference on Optical Internet. 9th OptoElectronics and Communications Conference, OECC/COIN2004. 16F2-5. Jul.. 2004.
Yasushi Yokota, Miura Toru, M. Ishikawa, Akihiro Matsutani, Fumio Koyama. "Fabrication of Hollow Optical Waveguide with Wafer Bonding". OptoElectronics and Communications Conference/International Conference on Optical Internet. 9th OptoElectronics and Communications Conference, OECC/COIN2004. 16F1-4. Jul.. 2004.
Masataka Ohta, Tomoyuki Miyamoto, Tetsuya Matsuura, Yasutaka Matsui, Tatsuya Furuhata, Fumio Koyama. "Lasing characteristics of highly-strained thin GaInAs/GaAs multiple quantum well lasers". OptoElectronics and Communications Conference/International Conference on Optical Internet. OptoElectronics and Communications Conference/International Conference on Optical Internet. No. 14E2-4. Jul.. 2004.
Atsushi Saito, Tomoyuki Miyamoto, Masao Kawaguchi, Fumio Koyama. "The effect of current annealing for GaInNAs/GaAs laser grown by metalorganic chemical vapor deposition". International Conference on Indium Phosphide and Related Materials. Jun.. 2004.
Tetsuya Matsuura, Tomoyuki Miyamoto, Masataka Ohta, Yasutaka Matsui, Tatsuya Furuhata, Fumio Koyama. "Wavelength elongation of MBE grown (GaInAs )QD by GaInAsSb cover layer". International Conference on Indium Phosphide and Related Materials. The 16th International Conference on Indium Phosphide and Related Materials. Jun.. 2004.
Jong-Hwa Baek, In-Kag Hwang, Kum-Hee Lee, Yong-Hee Lee, Young-Gu Ju, Takashi Kondo, Tomoyuki Miyamoto, Fumio Koyama. "Transverse mode control by etching depth tuning in 1120-nm GaInAs/GaAs photonic crystal vertical-cavity surface-emitting lasers". Conference on Lasers & Electro-Optics/International Quantum Electronics Conference. May.. 2004.
Tomoyuki Miyamoto. "(GaIn)(NAsSb) quantum wells and quantum dots for long wavelength laser material". International Research Workshop on Metastable Compound Semiconductors and Heterostrucutres. Mar.. 2004.
Takashi Kondo, Masakazu Arai, Tomoyuki Miyamoto, Fumio Koyama. ""Isolator-free, uncooled operation of highly strained 1.1µm GaInAs/GaAs vertical cavity surface emitting laser for 10 Gb/s single mode fiber data transmission"". Conference on Optical Fiber Communications. Feb.. 2004.
Takashi Kondo, Masakazu Arai, Tomoyuki Miyamoto, Fumio Koyama. "Isolator-free, uncooled operation of highly strained 1.1 μm GaInAs/GaAs vertical cavity surface emitting laser for 10 Gb/s single mode fiber data transmission". Conference on Optical Fiber Communications, OFC2004. Feb.. 2004.

2003

論文

Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Low-Temperature Dry Etching of InP by Inductively Coupled Plasma Using HI/Cl2". Jpn. J. Appl. Phys.. Vol. 42, No. 12A, pp. L1414-L1415. 2003.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama. "Cl2-based Inductively Coupled Plasma Etching of InP Using Internal Antenna". Jpn. J. Appl. Phys.. Vol. 42, No. 11, pp. 6837-6838. Nov.. 2003.
Takeshi Uchida, Tomoyuki Miyamoto. "Analysis of transverse-mode control in VCSELs using a convex mirror". Jpn. J. Appl. Phys.. vol. 42, no. 11, pp. 6883-6886. Nov.. 2003.
Toru Miura, Fumio Koyama, Akihiro Matsutani. "Novel phase-tunable three-dimensional hollow waveguides with variable air core". IEEE Photon. Technol. Lett.. vol. 15, no. 9, pp. 1240-1242. Sep.. 2003.
Masakazu Arai, Takashi Kondo, Akihiro Onomura, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "Multiple-wavelength GaInAs/GaAs vertical cavity surface emitting laser array with extended wavelength span". IEEE J. Select. Top. Quantum Electron.. vol. 9, no. 5, pp. 1367-1373. Sep.. 2003.
Takeshi Yamatoya, Fumio Koyama. "Optical preamplifier using antireflection-coating-free semiconductor optical amplifier with signal-inverted ASE". IEEE Photon. Technol. Lett.. vol. 15, no. 8, pp. 1047-1049. Aug.. 2003.
Tomoyuki Miyamoto, Masataka Ohta, Tetsuya Matsuura, Yasuhisa Matsui, Fumio Koyama. "Thermal annealing effect on self-assembled GaInNAs/GaAs quantum dots grown by chemical beam epitaxy". Physica Status Solidi. vol. 0(c), no. 4, pp. 1097-1100. Aug.. 2003.
Shgeki Makino, Tomoyuki Miyamoto, Masataka Ohota, Takeo Kageyama, Yoshihiko Ikenaga, Fumio Koyama, Kenichi Iga. "Growth characteristics of GaInNAs/GaAs quantum dots by chemical beam epitaxy". J. Crystal Growth. vol. 256, no. 3-4, pp. 372-377. May.. 2003.
Akihiro Onomura, Masakazu Arai, Takashi Kondo, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "Densely integrated multiple-wavelength vertical-cavity surface-emitting laser array". Jpn. J. Appl. Phys.. vol. 42, no. 5B, pp. L529-L531. May.. 2003.
Takeru Amano, Fumio Koyama, Tomoyuki Hino, Masakazu Arai, Akihiro Matsutani. "Design and fabrication of GaAs-GaAlAs micromachined tunable filter with thermal strain control". IEEE J. Lightwave Tech.. vol. 21, no. 3, pp. 596-601. Mar.. 2003.

学会発表

Masao Kawaguchi, Tomoyuki Miyamoto, Shinichiro Kawakami, Shugo Minobe, Atsushi Saito, Fumio Koyama. "Strain-compensated lasers for various phosphorous content". The 5th Pacific Rim Conference on Lasers and Electro-Optics. 2003.
Tetsuya Matsuura, Tomoyuki Miyamoto, Takeo Kageyama, Masataka Ohta, Yasutaka Matsui, Fumio Koyama. "Surfactant effect of Sb for GaInAs quantum dots grown by molecular beam epitaxy". International Symposium on Quantum Dots and Photonic Crystals 2003. Nov.. 2003.
Kohroh Kobayashi. "Development and Challange of Semiconductor Lasers for Photonic Networks". Photonics Conference 2003. Photonics Conference 2003. Nov.. 2003.
Jyunji Kinoshita, Tomoyuki Miyamoto, Yutaka Onishi, Fumio Koyama. "Characterization of single wavelength optically pumped GaInAsP/InP VCSELs with dielectric mirrors". 9th MICROOPTICS CONFERENCE. Oct.. 2003.
Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama. "Analysis of higher-order transverse mode suppression using a convex mirror including thermal lensing effect". 9th MICROOPTICS CONFERENCE. Oct.. 2003.
Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama. "Transverse-mode control of VCSELs with convex mirror". The 8th OptoElectronics and Communications Conference. Oct.. 2003.
Takashi Kondo, Masakazu Arai, Tomoyuki Miyamoto, Fumio Koyama. "Highly strained GaInAs/GaAs 1.13µm vertical cavity surface emitting laser with uncooled single mode operation". The 16th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Oct.. 2003.
Kohroh Kobayashi. "Disruptive optical technologies for next generation WDM communication". SPIE Proceeding. Vol. 5246, No. 38, pp. 309-316. Sep.. 2003.
Fumio Koyama, Masataka Ohta, Takeo Kageyama, Tetsuya Matsuura, Yasutaka Matsui, Tatsuya Furuhata, Tomoyuki Miyamoto. "Sb surfactant effect on highly strained GaInAs/GaAs quantum well grown by molecular beam epitaxy". The 13th International Conference on Molecular Beam Epitaxy 2004. Aug.. 2003.
Masao Kawaguchi, Tomoyuki Miyamoto, Shinichiro Kawakami, Atsushi Saito, Fumio Koyama. "Photoluminescence and lasing characteristics of 1.3µm GaInNAs/GaAs strain-compensated quantum wells". 30th International Symposium on Compound Semiconductors. pp. 72-73. Aug.. 2003.
Tomoyuki Miyamoto. "Growth and characterization of GaInNAs/GaAs long wavelength lasers". JSPS Colloquium on Photonics. Jun.. 2003.
Masakazu Arai, Takashi Kondo, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "Muitiple-wavelength GaInAs/GaAs vertical cavity surface emitting laser array with record wide wavelength span". 61th Annual Device Research Conference. 61th Annual Device Research Conference. pp. 153-154. Jun.. 2003.
Masataka Ohta, Tomoyuki Miyamoto, Shigeki Makino, Tetsuya Matsuura, Yasutaka Matsui, Fumio Koyama. "Investigation of well thickness reduction effect of GaInNAs/GaAs quantum well lasers". 15th Int. Conf. on Indium Phosphide and Related Materials. pp. 204 -208. May.. 2003.
Shigeki Makino, Tomoyuki Miyamoto, Masataka Ohta, Tetsuya Matsuura, Yasutaka Matsui, Fumio Koyama. "Thermal annealing effect on self-assembled GaInNAs/GaAs quantum dots grown by chemical beam epitaxy". 15th Int. Conf. on Indium Phosphide and Related Materials, IRPM2003. pp. 460-463. May.. 2003.
Tomoyuki Miyamoto, Masao Kawaguchi, Shugo Minobe, Shinichiro Kawakami, Fumio Koyama. "Improvement of MOCVD grown GaInNAs lasers". IWGAL. Apr.. 2003.
*Fumio Koyama, Tomoyuki Miyamoto. "Long wavelength surface emitting lasers in 1.2-1.3µm wavelength band". Conference on Optical Fiber Communications. Mar.. 2003.

2002

論文

Kenichi Iga. "Introduction to Nanotechnology". Journal of IEICE. vol. 85, no. 11, pp. 784-787. Nov.. 2002.
Masakazu Arai, Takashi Kondo, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "Growth of highly strained GaInAs-GaAs quantum wells on patterned substrate and its application for multiple-wavelength vertical-cavity surface-emitting laser array". IEEE J. Select. Top. Quantum Electron.. vol. 8, no. 4, pp. 811-816. Jul.. 2002.
Eric Gouardes, Tomoyuki Miyamoto, Masao Kawaguchi, Takashi Kondo, Fumio Koyama, Kenichi Iga. "GaInAs/GaInNAs/GaInAs intermediate layer structure for long wavelength lasers". IEEE Photon. Technol. Lett.. vol. 14, no. 7, pp. 896-898. Jul.. 2002.
Kenichi Iga. "Vertical-Cavity Surface-Emitting Laser - Progress and Prospects -". Trans. IEICE Transaction on Electronics. vol. E-85-C, no. 1, pp. 10-20. Jun.. 2002.
Takashi Kondo, Masakazu Arai, Munechika Azuchi, Takeshi Uchida, Tomoyuki Miyamoto, Fumio Koyama. "Effect of annealing on highly strained GaInAs/GaAs quantum wells". Jpn. J. Appl. Phys.. vol. 41, no. 6A, pp. L612-L614. Jun.. 2002.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama, Kenichi Iga. "Measurement of Plasma Density for Control of Etching Profile in Inductively Coupled Plasma Etching of InP". Jpn. J. Appl. Phys.. Vol. 41, No. 5A, pp. 3147-3148. May.. 2002.
Kenichi Iga. "Measurement of plasma density for control of etching profile in inductively coupled plasma etching of InP". Jpn. J. Appl. Phys.. vol. 41, no. 5A, pp. 3147-3148. May.. 2002.
Takashi Kondo, Masakazu Arai, Munechika Azuchi, Takeshi Uchida, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "Low threshold current density operation of 1.16 μm highly strained GaInAs/GaAs vertical cavity surface emitting lasers on (100) GaAs substrate". Jpn. J. Appl. Phys.. vol. 41, no. 5B, pp. L562-L564. May.. 2002.
Masao Kawaguchi, Tomoyuki Miyamoto, Eric Gouardes, Shugo Minobe, Takashi Kondo, Fumio Koyama, Kenichi Iga. "Photoluminescence and lasing characteristics of GaInNAs quantum wells using GaInAs intermediate layers". Jpn. J. Appl. Phys.. vol. 41, no. 2B, pp. 1034-1039. Feb.. 2002.

学会発表

Tohru Honda, Kenichi Iga, Hideo Kawanishi, Takahiro Sakaguchi, Fumio Koyama. "Deposition of GaN films on glass substrate and its application to UV electroluminescent devices". Meeting of the Materials Research Society(MRS 2002). No. L6.31. 2002.
Tohru Honda, Kenichi Iga, Hideo Kawanishi, Takahiro Sakaguchi, Fumio Koyama. "Deposition of GaN films on glass substrate and its application to UV electroluminescent devices". Meeting of the Materials Research Society. No. L6.31. 2002.
Fumio Koyama, Tomoyuki Miyamoto, Masakazu Arai, Takashi Kondo. "1200nm highly strained GaInAs/GaAs VCSELs". The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society. Nov.. 2002.
Fumio Koyama, Tomoyuki Miyamoto. "Micro/nano fabrication for surface emitting lasers and optical MEMS". Nano Microprocess Conference. Nov.. 2002.
Takashi Kondo, Masakazu Arai, Akihiro Onomura, Tomoyuki Miyamoto, Fumio Koyama, Takashi Kondo, Masakazu Arai, Akihiro Onomura, Tomoyuki Miyamoto. "1.23 μm long wavelength highly strained GaInAs/GaAs quantum well laser". The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society(LEOS 2002). pp. 618-619. Nov.. 2002.
Akihiro Onomura, Masakazu Arai, Takashi Kondo, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "Densely integrated multiple wavelength vertical surface emitting laser array". The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society. pp. 689-690. Nov.. 2002.
Shigeki Makino, Tomoyuki Miyamoto, Masataka Ohta, Tetsuya Matsuura, Yasuhisa Matsui, Fumio Koyama. "Thermal annealing effect on self-assembled GaInNAs/GaAs quantum dots grown by chemical beam epitaxy". 2nd Int. Conf. on Semiconductor Quantum Dots. Sep.. 2002.
Tomoyuki Miyamoto, Fumio Koyama. "Progress of GaInNAs long wavelength lasers". The 2002 Int. Conf. on Solid State Devices and Materials. Sep.. 2002.
Tomoyuki Miyamoto, Shigeki Makino, Masao Kawaguchi, Masataka Ohta, Shugo Minobe, Fumio Koyama. "Wavelength elongation of GaInNAs lasers beyond 1.3µm". Physics and Technology of Dilute Nitrides for Optical Communications. Sep.. 2002.
Shigeki Makino, Tomoyuki Miyamoto, Masataka Ohta, Takeo Kageyama, Yoshihiko Ikenaga, Fumio Koyama, Kenichi Iga. "Growth temperature and nitrogen composition dependence of growth characteristics of GaInNAs/GaAs quantum dots". 12th International Conderence on Molecular Beam EpitaxySeptenber 2002.. Sep.. 2002.
Masakazu Arai, Takashi Kondo, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "Multiple-wavelength GaInAs/GaAs vertical cavity surface emitting laser array with wavelength span of over 100 nm". IEEE 18th Int. Semiconductor Laser Conf.. pp. 9-10. Sep.. 2002.
Kohroh Kobayashi. "Recent Trends in Optical Fiber Communications; From High-Capacity to Flexible Networks". 28th European Conference on Optical Communicaiton. Sep.. 2002.
Fumio Koyama, Tomoyuki Miyamoto, Kenichi Iga. "Recent progress of surface emitting lasers for high speed photonic networks". SPIE ITCom. Jul.. 2002.
Tomoyuki Miyamoto, Fumio Koyama. "Low threshold GaInNAs/GaAs VCSELs". 7th Optoelectronics and Communication Conf.. pp. 150-151. Jul.. 2002.
Tomoyuki Miyamoto, Fumio Koyama. "GaInNAs based laser diodes grown by MOVPE". 11th Int. Conf. on Metalorganic Vapor Phase Epitaxy. Jun.. 2002.
Shigeki Makino, Tomoyuki Miyamoto, Takeo Kageyama, Yoshihiko Ikenaga, Masakazu Arai, Fumio Koyama, Kenichi Iga. "Annealing condition and composition dependence of thermal annealing effect on 1.3µm GaInNAs/GaAs quantum well lasers grown by chemical beam epitaxy". European Materials Research Society Spring Meeting. Jun.. 2002.
Masao Kawaguchi, Tomoyuki Miyamoto, Shugo Minobe, Fumio Koyama, Kenichi Iga. "Growth temperature dependence of annealing effect for GaInNAs/GaAs quantum wells grown by metalorganic chemical vapor deposition". 14th Int. Conf. on Indium Phosphide and Related Materials. pp. 237-240. May.. 2002.
Masakazu Arai, Takashi Kondo, Munechika Azuchi, Takeshi Uchida, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama. "1.2µm band multiple-wavelength GaInAs/GaAs vertical cavity surface emitting laser array on patterned substrate". 14th Int. Conf. on Indium Phosphide and Related Materials. pp. 303-304. May.. 2002.
Kentaro Nakamura, Hiroyuki Uenohara, Tomoyuki Miyamoto. "Positioning of Optical Fibers by Ultrasonic Vibrations". THE 19TH SENSOR SYMPOSIUM, 2002. pp. 351-354. May.. 2002.

2001

論文

Kenichi Iga. "Surface emitting laser - its history and prospect". The Review of Laser Eng.. vol. 29, no. 12, pp. 768-772. 2001.
Yasuhiko Aoki, Yuji Shimada, Fumio Koyama, Kenichi Iga. "2-Dimensional parallel optical interconnect module formation based on micro-optical bench concept". Trans. IEICE. vol. J84-C, no. 9, pp. 807-813. 2001.
Shigeki Makino, Tomoyuki Miyamoto, Takeo Kageyama, Yoshihiko Ikenaga, Masakazu Arai, Fumio Koyama, Kenichi Iga. "Composition dependence of thermal annealing effect on 1.3μm range GaInNAs/GaAs quantum well lasers grown by chemical beam epitaxy". Jpn. J. Appl. Phys.. vol. 40, no. 11B, pp. L1211-L1213. Nov.. 2001.
Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Tunnel junction for long-wavelength vertical-cavity surface-emitting lasers". Jpn. J. Appl. Phys.. vol. 40, no. 10, pp. 5909-5913. Oct.. 2001.
Ayako Murakami, Shigeaki Sekiguchi, Takahiro Sakaguchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Proposal of optically pumped tunable surface emitting laser". Jpn. J. Appl. Phys.. vol. 40, no. 9A/B, pp. L935-L936. Sep.. 2001.
Miura Toru, Fumio Koyama, Yasuhiko Aoki, Akihiro Matsutani, Kenichiro Iga. "Hollow optical waveguide for temperature-insensitive photonic integrated circuits". Jpn. J. Appl. Phys.. Vol. 40, No. 7A, pp. L688-L690. Jul.. 2001.
Masao Kawaguchi, Tomoyuki Miyamoto, Eric Gouardes, Dietmar Schlenker, Takashi Kondo, Fumio Koyama, Kenichi Iga. "Lasing characteristics of low-threshold GaInNAs lasers grown by metalorganic chemical vapor deposition". Jpn. J. Appl. Phys.. vol. 40, no. 7B, pp. L744-746. Jul.. 2001.
Masakazu Arai, Nobuhiko Nishiyama, Munechika Azuchi, Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Monolithic formation of metal organic chemical vapor deposition grown multi-wavelength vertical cavities with highly strained GaInAs/GaAs quantum wells on GaAs (311)B". Jpn. J. Appl. Phys. Vol. 40, No. 6A, pp. 4056-4057. Jun.. 2001.
Nobuhiko Nishiyama, Masakazu Arai, Satoshi Shinada, Munechika Azuchi, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "1.12μm polarization controlled highly strained GaInAs vertical-cavity surface-emitting lasers on GaAs (311)B by metal organic chemical vapor deposition". Jpn. J. Appl. Phys.. vol. 40, no. 5A, pp. L437-L439. May.. 2001.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama, Kenichi Iga. "Mass Effect of Etching Gases in Vertical and Smooth Dry Etching of InP". Jpn. J. Appl. Phys.. Vol. 40, No. 3A, pp. 1528-1529. Mar.. 2001.

学会発表

Kenichi Iga. "Surface emitting laser - its histry and prospect -". The Review of Laser Eng.. vol. 29, no. 12, pp. 768-772. 2001.
Tomoyuki Miyamoto, Shigeki Makino, Yoshihiko Ikenaga, Takeo Kageyama, Fumio Koyama, Kenichi Iga. "CBE growth of GaInNAs quantum structures for long-wavelength lasers". Int. Narrow Gap Nitride Workshop. p. 15. Oct.. 2001.
Yoshihiko Ikenaga, Tomoyuki Miyamoto, Sshigeki Makino, Takeo Kageyama, Masakazu Arai, Fumio Koyama, Kenichi Iga. "1.4µm GaInNAs/GaAs quantum well laser grown by chemical beam epitaxy". 28th Int. Symp. on Compound Semiconductors. Oct.. 2001.
Ayako Murakami, Shigeaki Sekiguchi, Takahiro Sakaguchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Design and fabrication of GaInAsP/InP vertical microcavity for optically pumped tunable surface emitting laser". 8th Microoptics Conf.. pp. 72-75. Oct.. 2001.
Tsukasa Yoshida, Yoshihiko Uchida, Takahiro Sakaguchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Characterization of thin film InGaN/GaN QWs formed by removing a substrate with UV laser irradiation for blue VCSELs". 8th Microoptics Conf. (MOC'01). pp. 76-79. Oct.. 2001.
Tsukasa Yoshida, Yoshihiko Uchida, Takahiro Sakaguchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Characterization of thin film InGaN/GaN QWs formed by removing a substrate with UV laser irradiation for blue VCSELs". 8th Microoptics Conf.. pp. 76-79. Oct.. 2001.
Takeru Amano, Fumio Koyama, Masakazu Arai, Tomoyuki Miyamoto, Kenichi Iga. "Thermal tuning of micromachined vertical cavity filter". 27th European Conf. on Optical Communication. pp. 216-217. Sep.. 2001.
Takeru Amano, Fumio Koyama, Masakazu Arai, Tomoyuki Miyamoto, Kenichi Iga. "Thermal wavelength tuning of micromachined GaAlAs/GaAs vertical cavity filter". 2001 IEEE/LEOS International Conference on Optical MEMS. pp. 73-74. Sep.. 2001.
Tomoyuki Miyamoto. "GaInNAs/GaAs surface emitting lasers". 2001 Asia-Pacific Radio Science Conference. p. 112. Aug.. 2001.
Tomoyuki Miyamoto, Masao Kawaguchi, Eric Gouardes, Takashi Kondo, Fumio Koyama, Kenichi Iga. "Low threshold operation of MOCVD grown GaInNAs lasers with GaInAs intermediate layer inserted QWs". 6th Optoelectronics and Communication Conf.. pp. 541-542. Jul.. 2001.
Masao Kawaguchi, Tomoyuki Miyamoto, Eric Gouardes, Takashi Kondo, Fumio Koyama, Kenichi Iga. "Low threshold current density operation (J_th=340A/cm²) of GaInNAs/GaAs quantum well lasers grown by metalorganic chemical vapor deposition". The Pacific Rim Conf. on Lasers and Electro-Optics 2001. pp. II-596-597. Jul.. 2001.
Shigeki Makino, Tomoyuki Miyamoto, Takeo Kageyama Yoshihiko Ikenaga, Nobuhiko Nishiyama, Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Room temperature continuous-wave operation of GaInNAs/GaAs VCSELs grown by chemical beam epitaxy with output power exceeding 1mW". The Pacific Rim Conf. on Lasers and Electro-Optics 2001. pp. II-608-609. Jul.. 2001.
Nobuhiko Nishiyama, Masakazu Arai, Satoshi Shinada, Munechika Azuchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Highly strained GaInAs/GaAs quantum well vertical-cavity surface-emitting laser on GaAs (311)B substrate for stable polarization operation". IEEE J. Select. Top. Quantum Electron.. vol. 7, no. 2, pp. 242-248. May.. 2001.
Satoshi Shinada, Fumio Koyama, Nobuhiko Nishiyama, Masakazu Arai, Kenichi Iga. "Analysis and fabrication of micro-aperture GaAs/GaAlAs surface emitting laser for near field optical data storage". IEEE J. Select. Top. Quantum Electron.. vol. 7, no. 2, pp. 365-370. May.. 2001.
Masao Kawaguchi, Tomoyuki Miyamoto, Eric Gouardes, Takashi Kondo, Fumio Koyama, Kenichi Iga. "Photoluminescence dependence on heterointerface for MOCVD grown GaInNAs/GaAs QWs". 13th Int. Conf. on Indium Phosphide and Related Materials. pp. 559-562. May.. 2001.
Shigeki Makino, Tomoyuki Miyamoto, Takeo Kageyama, Yoshihiko Ikenaga, Fumio Koyama, Kenichi Iga. "Formation of GaInNAs/GaAs densely packed quantum dots by chemical beam epitaxy". 13th Int. Conf. on Indium Phosphide and Related Materials. pp. 91-94. May.. 2001.

2000

論文

Dietmar Schlenker, Tomoyuki Miyamoto, Zhibiao Chen, Masao Kawaguchi, Takashi Kondo, Eric Gouardes, Fumio Koyama, Kenichi Iga. "Critical layer thickness of 1.2-μm highly strained GaInAs/GaAs quantum wells". J. Crystal Growth. vol. 221, pp. 503-508. 2000.
Nobuhiko Nishiyama, Masakazu Arai, Satoshi Shinada, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Growth and optical properties of highly strained GaInAs/GaAs quantum wells on (311)B GaAs by MOCVD". J. Crystal Growth. vol. 221, pp. 530-534. 2000.
Masao Kawaguchi, Tomoyuki Miyamoto, Eric Gouardes, Dietmar Schlenker, Takashi Kondo, Fumio Koyama, Kenichi Iga. "Optical quality dependence on growth rate for metalorganic chemical vapor deposition grown GaInNAs/GaAs". Jpn. J. Appl. Phys.. vol. 39, no. 12A, pp. L1219-L1220. 2000.
Masao Kawaguchi, Eric Gouardes, Dietmar Schlenker, Takashi Kondo, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Low threshold current density operation of GaInNAs/GaAs quantum well lasers grown by metalorganic chemical vapour deposition". Electron. Lett.. vol. 36, no. 21, pp. 1776-1777. Oct.. 2000.
Shunichi Sato, Nobuhiko Nishiyama, Tomoyuki Miyamoto, Takashi Takahashi, Naoto Jikutani, Masakazu Arai, Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Continuous wave operation of 1.26μm GaInNAs/GaAs vertical-cavity surface-emitting lasers grown by metalorganic chemical vapour deposition". Electron. Lett.. vol. 36, no. 24, pp. 2018-2019. Oct.. 2000.
Dietmar Schlenker, Tomoyuki Miyamoto, Zhibiao Chen, Masao Kawaguchi, Takashi Kondo, Eric Gouardes, J. Gemmer, C. Gemmer, Fumio Koyama, Kenichi Iga. "Inclusion of strain effect in miscibility gap calculations for III-V semiconductors". Jpn. J. Appl. Phys.. vol. 39, no. 10, pp. 5751-5757. Oct.. 2000.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama, Kenichi Iga. "Emission Spectrochemical Analysis in Dry Etching Process of InP by Cl2 Inductively Coupled Plasma". Jpn. J. Appl. Phys.. Vol. 39, No. 10, pp. 6109-6110. Oct.. 2000.
Nobuhiko Nishiyama, Masakazu Arai, Satoshi Shinada, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "1.15μm lasing operation of highly strained GaInAs/GaAs on GaAs (311)B substrate with high characteristic temperature (T₀=210 K)". Jpn. J. Appl. Phys.. vol. 39, no. 10B, pp. L1046-L1047. Oct.. 2000.
Masakazu Arai, Nobuhiko Nishiyama, Satoshi Shinada, Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Highly stable single polarization operation of GaInAs/GaAs vertical-cavity surface-emitting laser on GaAs (311)B substrate under high-speed modulation". Jpn. J. Appl. Phys.. Vol. 39, No. 8B, pp. L858-L860. Aug.. 2000.
Shigeaki Sekiguchi, Tomoyuki Miyamoto, Tadayoshi Kimura, Gen Okazaki, Fumio Koyama, Kenichi Iga. "Improvement of current injection uniformity and device resistance in long-wavelength vertical-cavity surface-emitting laser using a tunnel junction". Jpn. J. Appl. Phys.. vol. 39, no. 7A, pp. 3997-4001. Jul.. 2000.
Takeru Amano, Fumio Koyama, Nobuhiko Nishiyama, Kenichi Iga. "2X2 multiwavelength micromachined AlGaAs/GaAs vertical cavity filter array with wavelength control layer". Jpn. J. Appl. Phys.. Vol. 39, No. 7A, pp. L673-L674. Jul.. 2000.
Masakazu Arai, Nobuhiko Nishiyama, Satoshi Shinada, Fumio Koyama, Kenichi Iga. "AlAs oxidation system with H₂O vaporizer for oxide-confined surface emitting lasers". Jpn. J. Appl. Phys.. Vol. 39, No. 6A, pp. 3468-3469. Jun.. 2000.
Nobuhiko Nishiyama, Masakazu Arai, Satoshi Shinada, Koichi Suzuki, Fumio Koyama, Kenichi Iga. "Multi-oxide layer structure for single-mode operation in vertical-cavity surface-emitting lasers". IEEE Photon. Technol. Lett.. Vol. 12, No. 6, pp. 606-608. Jun.. 2000.
Masakazu Arai, Nobuhiko Nishiyama, Satoshi Shinada, Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Vertical-cavity surface-emitting laser array on GaAs(311)B substrate exhibiting single-transverse mode and stable-polarization operation". Jpn. J. Appl. Phys.. Vol. 39, No. 6B, pp. L588-L590. Jun.. 2000.
Takeru Amano, Fumio Koyama, Nobuhiko Nishiyama, Kenichi Iga. "Temperature-insensitive micromachined AlGaAs-GaAs vertical cavity filter". IEEE Photon. Technol. Lett.. Vol. 12, No. 5, pp. 510-512. May.. 2000.
Akihiro Matsutani, Hideo Ohtsuki, Fumio Koyama, Kenichi Iga. "Plasma Diagnostics in Inductively Coupled Plasma Etching Using Cl2/Xe". Jpn. J. Appl. Phys.. Vol. 39, No. 3A, pp. 1435-1436. Mar.. 2000.
Fumio Koyama, Takeru Amano, Noriyoshi Furukawa, Nobuhiko Nishiyama, Masakazu Arai, Kenichi Iga. "Micromachined semiconductor vertical cavity for temperature insensitive surface emitting lasers and optical filters". Jpn. J. Appl. Phys.. Vol. 39, No. 3B, pp. 1542-1545. Mar.. 2000.
Fumio Koyama, Dietmar Schlenker, Tomoyuki Miyamoto, Zhibiao Chen, Akihiro Matsutani, Takahiro Sakaguchi, Kenichi Iga. "Data transmission over single-mode fiber by using 1.2μm uncooled GaInAs-GaAs laser for Gbit/s local area network". IEEE Photon. Technol. Lett.. vol. 12, no. 2, pp. 125-127. Feb.. 2000.

学会発表

Fumio Koyama, Dietmar Schlenker, Nobuhiko Nishiyama, Tomoyuki Miyamoto, Kenichi Iga. "Highly strained GaInAs/GaAs quantum well lasers emitting at 1.2µm wavelength". Frontier Science Research Conf.. 2000.
Kenichi Iga. "Surface emitting laser-its birth and generation of new optoelectronics field". IEEE J. Select. Top. Quantum Electron. vol. 6, no. 6, pp. 1201-1215. Nov.. 2000.
Masao Kawaguchi, Tomoyuki Miyamoto, Eric Gouardes, Dietmar Schlenker, Takashi Kondo, Fumio Koyama, Kenichi Iga. "Improvement of GaInNAs/GaAs quantum wells by optimizing growth rate in MOCVD". 27th Int. Symp. on Compound Semiconductors. pp. 69-70. Oct.. 2000.
Fumio Koyama, Dietmar Schlenker, Tomoyuki Miyamoto, Zhibiao Chen, Takeshi Yamatoya, Takashi Kondo, Kenichi Iga. "1.5W operation of superluminescent diode with highly strained GaInAs/GaAs quantum well emitting at 1.2µm band". 17th Int. Semiconductor Laser Conf.. Sep.. 2000.
Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "High temperature characteristics of 1.2-1.3µm wavelength lasers on GaAs". 5th Optoelectronics and Communication Conf.. pp. 538-539. Jul.. 2000.
Shigeki Makino, Tomoyuki Miyamoto, Takeo Kageyama, Fumio Koyama, Kenichi Iga. "GaInNAs/GaAs quantum dots grown by chemical beam epitaxy". 10th Int. Conf. on Metalorganic Vapor Phase Epitaxy. pp. 72-74. Jun.. 2000.
Takeo Kageyama, Tomoyuki Miyamoto, Shigeki Makino, Fumio Koyama, Kenichi Iga. "Continuous-wave operation of GaInNAs/GaAs quantum well lasers grown by chemical beam epitaxy". 12th Int. Conf. on Indium Phosphide and Related Materials. pp. 447-450. May.. 2000.
Shigeaki Sekiguchi, Tomoyuki Miyamoto, Tadayoshi Kimura, Fumio Koyama, Kenichi Iga. "Investigation of automatically formed tunneling aperture for GaInAsP/InP lasers". 12th Int. Conf. on Indium Phosphide and Related Materials. pp. 451-454. May.. 2000.
Yuichiro Moriguchi, Tomoyuki Miyamoto, Takahiro Sakaguchi, Masatoshi Iwata, Yoshihiko Uchida, Fumio Koyama, Kenichi Iga. "GaN polycrystal growth on silica substrate by metalorganic vapor phase epitaxy (MOVPE)". 3rd Int. Symp. on Blue Laser and Light Emitting Diodes. Mar.. 2000.

1999

論文

Dietmar Schlenker, Tomoyuki Miyamoto, Zhong Pan, Fumio Koyama, Kenichi Iga. "Miscibility gap calculation for Ga_1-xIn_xN_yAs_1-y including strain effects". J. Crystal Growth. vol. 196, pp. 67-70. 1999.
Tomoyuki Miyamoto, Kanji Takeuchi, Takeo Kageyama, Fumio Koyama, Kenichi Iga. "Chemical beam epitaxy of GaInNAs/GaAs quantum wells and its optical absorption property". J. Crystal Growth. vol. 197, pp. 67-72. 1999.
Toshihiko Baba, Kyoji Inoshita, Hiroko Tanaka, Jun Yonekura, Maiko Ariga, Akihiro Matsutani, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Strong enhancement of light extraction efficiency in GaInAsP 2-D-arranged microcolumns". IEEE J. Lightwave Tech.. vol. 17, no. 11, pp. 2113-2120. Nov.. 1999.
Satoshi Shinada, Fumio Koyama, Nobuhiko Nishiyama, Masakazu Arai, Kenya GOTO, Kenichi Iga. "Fabrication of micro-aperture surface emitting laser for near field optical data storage". Jpn. J. Appl. Phys.. Vol. 38, No. 11B, pp. L198～L200. Nov.. 1999.
Zhibiao Chen, Dietmar Schlenker, Tomoyuki Miyamoto, Takashi Kondo, Masao Kawaguchi, Fumio Koyama, Kenichi Iga. "High temperature characteristics of near 1.2μm InGaAs/AlGaAs lasers". Jpn. J. Appl. Phys.. vol. 38, no. 10B, pp. L1178-L1179. Oct.. 1999.
Shigeaki Sekiguchi, Tomoyuki Miyamoto, Tadayoshi Kimura, Fumio Koyama, Kenichi Iga. "Self-aligned current confinement structure using AlAs/InP tunnel junction in GaInAsP/InP semiconductor lasers". Appl. Phys. Lett.. vol. 75, no. 11, pp. 1512-1514. Sep.. 1999.
Dietmar Schlenker, Zhong Pan, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Effect of surface quality on overgrowth of highly strained GaInAs/GaAs quantum wells and improvement by a strained buffer layer". Jpn. J. Appl. Phys.. vol. 38, no. 9A, pp. 5023-5027. Sep.. 1999.
Dietmar Schlenker, Tomoyuki Miyamoto, Zhibiao Chen, Fumio Koyama, Kenichi Iga. "1.17μm highly strained GaInAs-GaAs quantum-well laser". IEEE Photon. Technol. Lett.. vol. 11, no. 8, pp. 946-948. Aug.. 1999.
Akihiro Matsutani, Fumio Koyama, Hideo Ohtsuki, Kenichi Iga. "Vertical and Smooth Etching of InP by Cl2/Xe Inductively Coupled Plasma". Jpn. J. Appl. Phys.. Vol. 38, No. 7A, pp. 4260-4261. Jul.. 1999.
Fumio Koyama, Dietmar Schlenker, Tomoyuki Miyamoto, Zhibiao Chen, Akihiro Matsutani, Takahiro Sakaguchi, Kenichi Iga. "1.2μm highly strained GaInAs/GaAs quantum well lasers for singlemode fibre datalink". Electron. Lett.. vol. 35, no. 13, pp. 1079-1081. Jun.. 1999.
Shigeaki Sekiguchi, Tadayoshi Kimura, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Long wavelength GaInAsP lasers with n-n contacts using AlAs/InP hole injecting tunnel junction". Jpn. J. Appl. Phys.. vol. 38, no. 4B, pp. L443-L445. Apr.. 1999.
Takeo Kageyama, Tomoyuki Miyamoto, Shigeki Makino, Fumio Koyama, Kenichi Iga. "Thermal annealing of GaInNAs/GaAs quantum wells grown by chemical beam epitaxy and its effect upon photoluminescence". Jpn. J. Appl. Phys.. vol. 38, no. 3B, pp. L298-L300. Mar.. 1999.
Zhong Pan, Tomoyuki Miyamoto, Dietmar Schlenker, Fumio Koyama, Kenichi Iga. "Quality improvement of GaInNAs/GaAs quantum well growth by metalorganic chemical vapor deposition using tertiarybutylarsine". Jpn. J. Appl. Phys.. vol. 38, no. 2B, pp. 1012-1014. Feb.. 1999.

学会発表

Fumio Koyama, D. Schlenker, Tomoyuki Miyamoto, Z. Chen, Kenichi Iga. "1.2 μm GaInAs/GaAs lasers - Are they useful for high capacity single mode fiber datacom?". SPIE Conf. on Photonics Technology (SPIE Symposium. pp. 290-296. 1999.
Fumio Koyama, Kenichi Iga, Tomoyuki Miyamoto, D. Schlenker. "High characteristic temperature (T0>150K) 1.2 mm GaInAs/GaAs lasers". IEEE Lasers and Electro-Optics Society 1999 Annual Meeting (LEOS’99). Nov.. 1999.
Kenichi Iga, Fumio Koyama, Tomoyuki Miyamoto, Dietmar Schlenker, Zhibiao Chen. "High characteristic temperature (T₀>150K) 1.2µm GaInAs/GaAs lasers". IEEE Lasers and Electro-Optics Society 1999 Annual Meeting. Nov.. 1999.
Kohroh Kobayashi. "Recent Progress of Photonic Device Research". SPIE International Symposium on Photonics and Applications. Nov.. 1999.
Zhibiao Chen, Dietmar Schlenker, Fumio Koyama, Tomoyuki Miyamoto, Akihiro Matsutani, Kenichi Iga. "High temperature characteristics of highly strained 1.2 µm InGaAs/GaAs quantum well lasers". 5th Asia Pacific Conference on Communications and 4th Optoelectronics and Communications Conference. pp. 1311-1314. Oct.. 1999.
Takeru Amano, Fumio Koyama, N. Furukawa, Nobuhiko Nishiyama, Masakazu Arai, Kenichi Iga. "Micromachined GaAlAs/GaAs vertical cavity filter with adjustable temperature dependence". 5th Asia Pacific Conference on Communications and 4th Optoelectronics and Communications Conference (APCC/OECC'99). 5th Asia Pacific Conf. on Communications and 4th Optoelectronics and Communications Conf. (APCC/OECC’99). Vol. PD, pp. 19-20. Oct.. 1999.
Takeo Kageyama, Tomoyuki Miyamoto, Shigeki Makino, Fumio Koyama, Kenichi Iga. "GaInNAs/GaAs quantum well laser grown by chemical beam epitaxy". The 1999 Int. Conf. on Solid State Devices and Materials. Sep.. 1999.
Fumio Koyama, Tomoyuki Miyamoto, Z. Chen, Akihiro Matsutani, Takahiro Sakaguchi, Kenichi Iga. "Highly strained GaInAs/GaAs QW for 1.2 μm surface emitting lasers". IEEE/LEOS Summer Topical Meetings,LEOS Summer’99. pp. 23. Sep.. 1999.
T. Kageyama, Tomoyuki Miyamoto, S. Makino, Fumio Koyama, Kenichi Iga. "GaInNAs/GaAs quantum well laser grown by chemical beam epitaxy". The 1999 Int. Conf. on Solid State Devices and Materials (SSDM’99). pp. 290-291. Sep.. 1999.
Fumio Koyama, D. Schlenker, Tomoyuki Miyamoto, Z. Chen, Akihiro Matsutani, Takahiro Sakaguchi, Kenichi Iga. "2 Gbit/s single-mode fiber data transmission using 1.2 μm heatsink-free GaInAs/GaAs laser for Gbit/s-LAN". 25th European Conf. on Optical Communication (ECOC’99). pp. II-78. Sep.. 1999.
Kenichi Iga, Fumio Koyama. "Advances in vertical cavity surface emitting lasers". 18th Int. Commission for Optics (ICO’99). pp. 300-301. Aug.. 1999.
Binquan Wang, Tomoyuki Miyamoto, Kenichi Iga. "Optical pattern recognition system based on optical correlator using planar microlens array". 7th Microoptics Conf.. Jul.. 1999.
Takeo Kageyama, Tomoyuki Miyamoto, Shigeki Makino, Fumio Koyama, Kenichi Iga. "Optical quality of GaNAs and GaInNAs and its dependence on RF cell condition in chemical beam epitaxy". 7th Int. Conf. on Chemical Beam Epitaxy and Related Growth Techniques, ICCBE-7. pp. 113-114. Jul.. 1999.
N. Furukawa, Fumio Koyama, Nobuhiko Nishiyama, Masakazu Arai, Tomoyuki Miyamoto, Kenichi Iga. "Micromachined tunable GaAlAs/GaAs DBR for temperature insensitive vertical cavity add/drop filter". 7th Microoptics Conf. , MOC’99. pp. 70-73. Jul.. 1999.
Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "CBE and MOCVD growth of GaInNAs". 7th Int. Conf. on Chemical Beam Epitaxy and Related Growth Techniques, ICCBE-7. pp. 97-98. Jul.. 1999.
D. Schlenker, Tomoyuki Miyamoto, Z. Chen, Fumio Koyama, Kenichi Iga. "Growth of highly strained 1.2 mm GaInAs/GaAs quantum wells for long-wavelength laser". 9th biennial workshop on Organometallic Vapor Phase Epitaxy. May.. 1999.
Shigeaki Sekiguchi, Tomoyuki Miyamoto, T. Kimura, Fumio Koyama, Kenichi Iga. "Selectively formed AlAs/InP current confining tunnel J.ction for GaInAsP/InP surface emitting lasers". 11th Int. Conf. on Indium Phosphide and Related Materials (IPRM’99). pp. 211-214. May.. 1999.
M. Fujita, Toshihiko Baba, Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "A novel GaInAsP microcylinder laser with AlInAs(Ox) cladding". 11th Int. Conf. on Indium Phosphide and Related Materials ,IPRM’99. TuB1-5, pp. 215-217. May.. 1999.
D. Schlenker, Tomoyuki Miyamoto, Z. Chen, Fumio Koyama, Kenichi Iga. "Long wavelength GaInAs/GaAs quantum well lasers". 11th Int. Conf. on Indium Phosphide and Related Materials (IPRM’99. pp. 499-502. May.. 1999.
Nobuhiko Nishiyama, Akimasa Mizutani, Nobuaki Hatori, Masakazu Arai, Fumio Koyama, Kenichi Iga. "Lasing characteristics of InGaAs-GaAs polarization controlled vertical-cavity surface-emitting laser grown on GaAs (311)B substrate". IEEE J. Select. Top. Quantum Electron. vol. 5, no. 3, pp. 530-536. May.. 1999.
Fumio Koyama, S. Sato, Tomoyuki Miyamoto, Kenichi Iga. "Composition dependence of carrier lifetime and spontaneous emission of highly strained GaInNAs/GaAs QW lasers". 11th Int. Conf. on Indium Phosphide and Related Materials ,IPRM’99. pp. 565-568. May.. 1999.
Nobuhiko Nishiyama, Satoshi Shinada, Masakazu Arai, Fumio Koyama, Kenichi Iga. "Threshold reduction of polarization controlled InGaAs/GaAs vertical-cavity surface emitting lasers on GaAs (311)B substrates". OSA Snowmass Meeting 1999. SMD3, pp. 43-45. Apr.. 1999.

1998

論文

Zhong Pan, Tomoyuki Miyamoto, Dietmar Schlenker, Shunichi Sato, Fumio Koyama, Kenichi Iga. "Low temperature growth of GaInNAs/GaAs quantum wells by metalorganic chemical vapor deposition using tertiarybutylarsine". J. Appl. Phys.. vol. 84. 1998.
Tohru Honda, Tomoyuki Miyamoto, Takahiro Sakaguchi, Hideo Kawanishi, Fumio Koyama, Kenichi Iga. "Effect of piezo electric field on emission characteristics GaN/AlGaN quantum wells". J. Crystal Growth. vol. 189/190. 1998.
Tomoyuki Miyamoto, Shunichi Sato, Zhong Pan, Dietmar Schlenker, Fumio Koyama, Kenichi Iga. "GaNAs/GaInAs short-period superlattice quantum well structures grown by MOCVD using TBAs and DMHy". J. Crystal Growth. vol. 195. 1998.
Tohru Honda, Akira Inoue, Miyuki Mori, Tomoe Shirasawa, Noriaki Mochida, Kouji Saotome, Takahiro Sakaguchi, Akira Ohtomo, Masashi Kawasaki, Hideomi Koinuma, Fumio Koyama, Kenichi Iga. "GaN growth on ozonized sapphire(0001) substrates by MOVPE". J. Crystal Growth. Vol. 195, No. 1-4, pp. 319-322. 1998.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Low Bias Voltage Dry Etching of InP by Inductively Coupled Plasma Using SiCl4/Ar". Jpn. J. Appl. Phys.. Vol. 37, No. 12A, pp. 6655-6656. 1998.
Chang Kyu Kim, Tomoyuki Miyamoto, Yang Hee Lee. "Design considerations of GaInNAs-GaAs quantum wells: Effects of indium and nitrogen mole fractions". Jpn. J. Appl. Phys.. vol. 37. Nov.. 1998.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "C60 Resist Mask of Electron Beam Lithography for Chlorine-Based Reactive Ion Beam Etching". Jpn. J. Appl. Phys.. Vol. 37, No. 7, pp. 4211-4212. Jul.. 1998.
Nobuhiko Nishiyama, Akimasa Mizutani, Nobuaki Hatori, Fumio Koyama, Kenichi Iga. "A completely single-mode and single polarization vertical-cavity surface emitting lasers grown on GaAs (311)B substrate". Jpn. J. Appl. Phys.. vol. 37, no. 6A, pp. L640-L642. Jul.. 1998.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Plasma Characterization in Chlorine-Based Reactive Ion Beam Etching and Chemically Assisted Ion Beam Etching". Jpn. J. Appl. Phys.. Vol. 37, No. 5A, pp. 2747-2751. May.. 1998.
Kanji Takeuchi, Tomoyuki Miyamoto, Takeo Kageyama, Fumio Koyama, Kenichi Iga. "Chemical beam epitaxy growth and characterization of GaNAs/GaAs". Jpn. J. Appl. Phys.. vol. 37, no. 3B. Mar.. 1998.

学会発表

Takahiro Sakaguchi, Tomoe Shirasawa, N. Mochida, Akira Inoue, Masatoshi Iwata, Tohru Honda, Fumio Koyama, Kenichi Iga. "Highly reflective AlN/GaN and ZrO2/SiO2 multilayer distributed Bragg reflectors for InGaN/GaN surface emitting lasers". IEEE Lasers and Electro-Optics Society 1998 Annual Meeting, LEOS'98. TuC4. 1998.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Low bias voltage dry etchinG.f InP by inductively coupled plasma (ICP) using SiCl4/A". IEEE Lasers and Electro-Optics Society 1998 Annual Meeting, LEOS'98. WS4. 1998.
Fumio Koyama, Shunichi Sato, Tomoyuki Miyamoto, Kenichi Iga. "Carrier lifetime measurement of long wavelength GaInNAs lasers". IEEE Lasers and Electro-Optics Society 1998 Annual Meeting. 1998.
Shigeaki Sekiguchi, Tomoyuki Miyamoto, T. Kimura, Fumio Koyama, Kenichi Iga. "Heavy p-type carbon doping to AlAs for InP based optoelectronic devices". IEEE Lasers and Electro-Optics Society 1998 Annual Meeting, LEOS'98. 1998.
Tomoyuki Miyamoto, Takeo Kageyama, Schlenker Dietmar, Shigeki Makino, Fumio Koyama, Kenichi Iga. "Comparison of GaInNAs grown by MOCVD and CBE". IEEE Lasers and Electro-Optics Society 1998 Annual Meeting, LEOS'98. 1998.
Koichi Suzuki, Fumio Koyama, Kenichi Iga. "Proposal and design of large-scale GaInAsP/InP arrayed waveguide grating multiplexers with corner reflectors". 1998 OSA Annual Meeting.OSA'98. WKK4, pp. 114. Nov.. 1998.
N. Ohnoki, Gen Okazaki, Fumio Koyama, Kenichi Iga. "Record high characteristic temperature (T0=122K) in 1.55μm AlGaInAs lasers with AlAs/AlInAs multiple quantum barrier". 16th Int. Semiconductor Laser Conf., ISLC'98. PD-9. Oct.. 1998.
Nobuhiko Nishiyama, A. Mizutani, Nobuaki Hatori, Fumio Koyama, Kenichi Iga. "Single mode and stable polarization InGaAs/GaAs surface emitting laser grown on GaAs(311)B substrate". 16th Int. Semiconductor Laser Conf., ISLC'9. ThA1. Oct.. 1998.
Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Progress of vertical cavity surface emitting lasers". 25th Int. Symp. on Compound Semiconductors. Oct.. 1998.
Takeo Kageyama, Tomoyuki Miyamoto, Shigeki Makino, Fumio Koyama, Kenichi Iga. "Optical quality improvement and blue-shift of GaInNAs/GaAs quantum well structures by thermal annealing". 25th Int. Symp. on Compound Semiconductors. Oct.. 1998.
Dietmar Schlenker, Tomoyuki Miyamoto, Zhong Pan, Fumio Koyama, Kenichi Iga. "Miscibility gap calculation for Ga_1-xIn_xN_yAs_1-y including strain effect". 25th Int. Symp. on Compound Semiconductors. Oct.. 1998.
Akira Inoue, Takahiro Sakaguchi, Y. Moriguchi, Tomoyuki Miyamoto, Masatoshi Iwata, Fumio Koyama, Kenichi Iga. "InGaN selective MOCVD growth and polycrystalline formation on SiO2-patterned sapphire substrate". 2nd Int. Symp. on Blue Laser and Light Emitting Diodes, ISBLLED'98. Sep.. 1998.
Kenichi Iga. "Surface emitting laser". Trans. IEICE. vol. J81-C-I, no. 9, pp. 483-493. Sep.. 1998.
Fumio Koyama, Shigeyuki Inoue, Tomoyuki Miyamoto, Shigeaki Sekiguchi, Kenichi Iga. "Metal-semiconductor-metal photodetectors with strained carrier transport layer". 3rd Optoelectronics and Communication Conf.. pp. 358-359. Jul.. 1998.
Tomoyuki Miyamoto, Shunichi Sato, Zhong Pan, Dietmar Schlenker, Fumio Koyama, Kenichi Iga. "GaNAs/GaInAs short-period superlattice quantum well structures grown by MOCVD using TBAs and DMHy". 9th Int. Conf. on Metalorganic Vapor Phase Epitaxy. p. 20. May.. 1998.
Zhong Pan, Tomoyuki Miyamoto, Dietmar Schlenker, Fumio Koyama, Kenichi Iga. "Quality improvement of GaInNAs/GaAs quantum wells grown by MOCVD using tertiarybutylarsine". 10th Int. Conf. on Indium Phosphide and Related Materials. pp. 135-138. May.. 1998.

1997

論文

T. H. Loh, Tomoyuki Miyamoto, Takeshi Takada, Fumio Koyama, Kenichi Iga. "Design and characterization of InAsP/InP/GaInP short-period superlattices for long-wavelength multi-quantum barrier grown by chemical beam epitaxy". J. Crystal Growth. vol. 172. 1997.
Tomoyuki Miyamoto, Kanji Takeuchi, Fumio Koyama, Kenichi Iga. "Novel GaInNAs/GaAs quantum well structure for long wavelength semiconductor lasers". IEEE Photon. Technol. Lett.. vol. 9, no. 11. Nov.. 1997.
Shigeaki Sekiguchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Auto-doping of carbon to AlAs grown by metalorganic chemical vapor deposition using trimethylaluminium and tertiarybutyl-arsine". Jpn. J. Appl. Phys.. vol. 36, no. 5A. May.. 1997.

学会発表

Tohru Honda, Tomoyuki Miyamoto, Takahiro Sakaguchi, Hideo Kawanishi, Fumio Koyama, Kenichi Iga. "Effect of piezo electric field on emission characteristics in GaN/AlGaN quantum well". ICNS'97. 1997.
Tomoyuki Miyamoto. "GaInNAs/GaAs long wavelength VCSELs -- design and expected characteristics --". IEEE Lasers and Electro-Optics Society 1997 Annual Meeting. Nov.. 1997.
Kanji Takeuchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Chemical beam epitaxy growth and characterization of Ga(In)NAs/GaAs". The 1997 Int. Conf. on Solid State Devices and Materials. Sep.. 1997.
Tomoyuki Miyamoto, Takeshi Takada, Kanji Takeuchi, Fumio Koyama, Kenichi Iga. "A new GaInNAs/GaAs quantum well structure for long wavelength semiconductor lasers". The Pacific Rim Conf. on Lasers and Electro-Optics 1997. Jul.. 1997.
Tomoyuki Miyamoto, Takeshi Takada, Kanji Takeuchi, Fumio Koyama, Kenichi Iga. "Design and optimization of 1.3µm GaInNAs/GaAs vertical cavity surface emitting lasers". Quantum Optoelectronics of 1997 OSA Spring Topical Meeting. Mar.. 1997.

1996

論文

T. H. Loh, Tomoyuki Miyamoto, Yoichiro Kurita, Fumio Koyama, Kenichi Iga. "Reduction of inelastic scattering effect by introduction of GaInAs/GaInP strain-compensated superlattice into multi-quantum barriers". Opt. and Quantum Electron.. vol. 28, no. 5. May.. 1996.

学会発表

Satoshi Mitsugi, Fumio Koyama, Akihiro Matsutani, Tomoyuki Miyamoto, Kenichi Iga. "A design of polygonal micro-ring cavities for photonic integrated circuits". IEEE Lasers and Electro-Optics Society 1996 Annual Meeting. Nov.. 1996.
F. Vazquez, D. Kobayashi, I. Kobayashi, K. Furuya, Tomoyuki Miyamoto, Takeo Maruyama, Masahiro Watanabe, Masahiro Asada. "Experimental Evidence of Hot Electron Detection with Scanning Hot Electron Microscopy (SHEM)". the 1996 International Conference on Solid State Devices and Materials. Sympo. IV-7, 187-189. Aug.. 1996.
T. H. Loh, Tomoyuki Miyamoto, Takeshi Takada, Fumio Koyama, Kenichi Iga. "Design and CBE growth of strain-balanced InAsP/InP/GaInP short-period superlattice for long-wavelength multi-quantum barriers". 8th Int. Conf. on Indium Phosphide and Related Materials. Apr.. 1996.

その他

Tomoyuki Miyamoto. "A study on low threshold GaInAsP/InP surface emitting lasers grown by chemical beam epitaxy". Mar.. 1996.

1995

論文

Yoichiro Kurita, Noriyuki Yokouchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Refractive index variation in GaInAsP/InP quantum confined structures grown by chemical beam epitaxy". Jpn. J. Appl. Phys.. vol. 34, no. 10. Oct.. 1995.
T. H. Loh, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga, Kazuhito Furuya. "Study on inelastic scattering effect in unstrained and strain-compensated GaInAs/GaInP multiquantum barriers". Jpn. J. Appl. Phys.. vol. 34, no. 8B. Aug.. 1995.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Surface Temperature Increase in Reactive Ion Beam Etch and Improvement of Profiles by Multistep Etching". Jpn. J. Appl. Phys.. Vol. 34, No. 4A, pp. 2053-2054. Apr.. 1995.
T. H. Loh, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Strain-compensated multi-quantum barriers for reduction of electron leakages in long-wavelength semiconductor lasers". Jpn. J. Appl. Phys.. vol. 34, no. 3. Mar.. 1995.

学会発表

Fumio Koyama, Kenichi Iga. "Design of ultra-low power optical interconnects using low threshold vertical cavity surface emitting lasers". 1995 OSA Annual Meeting(OSA'95). Sep.. 1995.
A. Katsube, T. Honda, Takahiro Sakaguchi, Fumio Koyama, Kenichi Iga. "Design of low threshold GaN-based quantum well surface emitting laser". Topical Workshop on III-V Nitrides(TWIII-VN). p. 8. Sep.. 1995.
T. Honda, A. Katsube, Takahiro Sakaguchi, Fumio Koyama, Kenichi Iga. "Design of GaN-based surface emitting laser with low threshold operation". Int. Conf. on Silicon Carbide and Related Materials(ICSCRM-95). Tup-14, pp. 279-280. Sep.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
N. Hatori, T. Mukaihara, Y. Hayashi, N. Ohnoki, Fumio Koyama, Kenichi Iga. "Design and fabrication of quantum wires for vertical-cavity surface-emitting lasers". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
T. Honda, Takahiro Sakaguchi, Fumio Koyama, Kenichi Iga, K. Inoue, H. Munekata, H. Kukimoto. "Design and fabrication of ZnSe-based blue/green surface emitting lasers". 7th Int. Conf. on II-VI Compounds and Devices(ICII-VICD). Aug.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
Toshihiko Baba, M. Hamasaki, N. Watanabe, Akihiro Matsutani, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A novel short cavity laser with deep grating DBRs". The 1995 Int. Conf. on Solid State Devices and Materials(SSDM'95). Aug.. 1995.
T. H. Loh, Tomoyuki Miyamoto, Y. Kurita, T. Takada, F. Koyama, K. Iga. "CBE growth of GaInAs/GaInP strain-compensated short-period superlattice to realize strain-compensated multi-quantum barriers". The 56th Autumn Meeting of The Japan Society of Applied Physics. Aug.. 1995.
T. Mukaihara, N. Ohnoki, Y. Hayashi, Nobuaki Hatori, Fumio Koyama, Kenichi Iga. "Excess intensity noise of vertical-cavity surface-emitting lasers caused by polarization fluctuation". The Pacific Rim Conf. on Lasers and Electro-Optics 1995(CLEO/PR'95). ThC2. Jul.. 1995.
N. Ohnoki, T. Mukaihara, Y. Hayashi, Nobuaki Hatori, Fumio Koyama, Kenichi Iga. "Optical characteristics of Au/GaAs polarizer for controlling surface-emitting laser polarization". The Pacific Rim Conf. on Lasers and Electro-Optics 1995 (CLEO/PR'95). ThC3. Jul.. 1995.
Tomoyuki Miyamoto, T. Takada, Y. Kurita, K. Mori, Fumio Koyama, Kenichi Iga. "Design of p-cladding layer for low threshold long-wavelength surface-emitting lasers". The Pacific Rim Conf. on Lasers and Electro-Optics 1995(CLEO/PR'95). Jul.. 1995.
T. Honda, K. Inoue, H. Munekata, H. Kukimoto, Fumio Koyama, Kenichi Iga. "ZnSe-based vertical Fabry-Perot cavity for blue surface emitting lasers". The Pacific Rim Conf. on Lasers and Electro-Optics 1995(CLEO/PR'95). pp. 134-135. Jul.. 1995.
T. Honda, A. Katsube, T Sakaguchi, Fumio Koyama, Kenichi Iga. "Threshold estimation of GaN-based surface emitting lasers operating in ultraviolet spectral region". Jpn. J. Appl. Phys. vol. 34, pp. 3527-3532. Jul.. 1995.
T. H. Loh, Tomoyuki Miyamoto, Yoichiro Kurita, Fumio Koyama, Kenichi Iga. "Reduction of inelastic scattering effect by introducing strain-compensated superlattice into GaInAs/GaInP multi-quantum barriers". 7th Int. Conf. on Indium Phosphide and Related Materials. May.. 1995.
Y. Hayashi, T. Mukaihara, Nobuaki Hatori, N. Ohnoki, Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "A record low threshold InGaAs/GaAlAs vertical-cavity surface-emitting laser". Quantum Optoelectronics Conf., QOE'95. Mar.. 1995.
T. H. Loh, Fumio Koyama, Kenichi Iga. "A study on inelastic scattering effect in unstrained and strain-compensated GaInAs/GaInP multi-quantum barrier". Int. Workshop on Mesoscopic Physics and Electronics, MPE'95. J4. Mar.. 1995.
Y. Hayashi, T. Mukaihara, N. Hatori, N. Ohnoki, A. Matsutani, Fumio Koyama, Kenichi Iga. "Record low-threshold index-guided InGaAs/GaAlAs vertical-cavity surface-emitting laser with a native oxide confinement structure". Electron. Lett.. vol. 31, pp. 560-562. Mar.. 1995.

その他

Hiroyuki Uenohara. "A study of multiple quantum well bistable lasers for application to all-optical signal processing". Jul.. 1995.

1994

論文

Tomoyuki Miyamoto, Takashi Uchida, Noriyuki Yokouchi, Kenichi Iga. "Surface emitting lasers grown by CBE". J. Crystal Growth. vol. 136, pp. 210-215. 1994.
Yuichi Inaba, Takashi Uchida, Noriyuki Yokouchi, Tomoyuki Miyamoto, Kenichi Mori, Fumio Koyama, Kenichi Iga. "Growth of GaInAs(P)/InP multi-quantum barrier (MQB) by chemical beam epitaxy". J. Crystal Growth. vol. 136, pp. 297-301. 1994.
Noriyuki Yokouchi, Yuichi Inaba, Takashi Uchida, Tomoyuki Miyamoto, Kenichi Mori, Fumio Koyama, Kenichi Iga. "Composition changes in Ga_xIn_1-xAs/InP super-lattice growth by chemical beam epitaxy". J. Crystal Growth. vol. 136, pp. 302-305. 1994.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Measurement of Sidewall Roughness of InP Etched by Reactive Ion Beam Etching". Jpn. J. Appl. Phys.. Vol. 33, No. 12A, pp. 6737-6738. 1994.
Tomoyuki Miyamoto, Kenichi Mori, Hiroaki Maekawa, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "Carrier transport in p-type GaInAsP/InP distributed Bragg reflectors". Jpn. J. Appl. Phys.. vol. 33, no. 8, pp. 4614-4616. Aug.. 1994.

学会発表

Fumio Koyama, S. Mitsugi, J. Kato, Akihiro Matsutani, K. Suzuki, T. Mukaihara, Kenichi Iga. "RIBE micro-fabrication of semiconductor photonic devices for micro-photonic integrated circuit". IEEE Lasers and Electro-Optics Society 1994 Annual Meeting, LEOS'94. IO5.2. Nov.. 1994.
S. W. Lim, Tohru Honda, K. Yanashima, Fumio Koyama, Hiroshi Kukimoto, Kenichi Iga. "Highly-doped p-ZnSe formation by Li3N diffusion". IEEE Lasers and Electro-Optics Society 1994 Annual Meeting, LEOS'94. OM2.4, pp. 59. Nov.. 1994.
T. Mukaihara, N. Ohnoki, Y. Hayashi, Fumio Koyama, Kenichi Iga. "Polarization control of vertical-cavity surface-emitting lasers by a birefringent metal/semiconductor polarizer terminating a distributed Bragg reflector". 14th Int. Semiconductor Laser Conf., ISLC'94. W1.6. Oct.. 1994.
T.H. Loh, Tomoyuki Miyamoto, F. Koyama, K. Iga. "Strain-compensated multi-quantum barriers for hot electron leakage reduction in long-wavelength semiconductor lasers". The 55th Autumn Meeting of The Japan Society of Applied Physics. Sep.. 1994.
Fumio Koyama, T. Mukaihara, Y. Hayashi, N. Ohnoki, Nobuaki Hatori, Kenichi Iga. "Multi-wavelength vertical cavity surface emitting laser arrays fabricated by nonplanar MOCVD". 20th European Conf. on Optical Communication, ECOC'94. Post deadline paper, pp. 125-127. Sep.. 1994.
Fumio Koyama, Toshihiko Baba, Kenichi Iga. "Present status and future prospect of long wavelength surface emitting lasers". 20th European Conf. on Optical Communication, ECOC'94. pp. 333-336. Sep.. 1994.
S.Mitsugi, J. Kato, Fumio Koyama, Akihiro Matsutani, T. Mukaihara, Kenichi Iga. "GaInAs/GaAs micro-arc ring semiconductor lasers". The 1994 Int. Conf. on Solid State Devices and Materials, SSDM'94. S-I-10-2. Aug.. 1994.
Tomoyuki Miyamoto, Kenichi Mori, Fumio Koyama, Kenichi Iga. "A study on hole transport in p-type GaInAsP/InP multilayer reflectors". The 1994 Int. Conf. on Solid State Devices and Materials, SSDM'94. Aug.. 1994.
S. W. Lim, T. Honda, K. Yanashima, K. Inoue, H. Munekata, H. Kukimoto, Fumio Koyama, Kenichi Iga. "Highly conductive p-type ZnSe formation using Li3N diffusion". The 1994 Int. Conf. on Solid State Devices and Materials, SSDM'94. LD4, pp. 967-968. Aug.. 1994.
T. Baba, R.h Watanabe, K. Asano, N. Ishibashi, Fumio Koyama, Kenichi Iga. "Observation of photon recycling effect in quasi-closed cavity light emitters". 5th Optoelectronic Conf., OEC'94. 14D4-2. Jul.. 1994.
H. Maekawa, T. Mukaihara, M. Araki, Y. Hayashi, N. Ohnoki, Fumio Koyama, Kenichi Iga. "Some performances of InGaAs/GaAlAs surface emitting lasers grown by MOCVD and improvement of p-doping in AlAs". 5th Optoelectronic Conf., OEC'94. 14D3-5. Jul.. 1994.
T. Hamano, T. Baba, Fumio Koyama, Kenichi Iga. "Spontaneous emission factors and its inJunection level dependences of Microcavity surface emitting lasers using quantum-films and boxes". 5th Optoelectronic Conf., OEC'94. 14D4-3, pp. 232-233. Jul.. 1994.
S. W. Lim, T. Honda, K. Yanashima, K. Inoue, H. Munekata, H. Kukimoto, Fumio Koyama, Kenichi Iga. "Formation of p+-ZnSe contact layer by (Li, N) diffusion for MOCVD-grown II-VI inJunection lasers". 5th Optoelectronic Conf., OEC'94. PDII-5, pp. 24. Jul.. 1994.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Measurement of sidewall roughness of InP etched by RIBE". 1994 IEEE/LEOS Summer Topical Meetings, LEOS Summer'91. T1.3,, pp. 26-27. Jul.. 1994.
Fumio Koyama. "Present status and new functions of surface emitting lasers". 5th Optoelectronic Conf., OEC'94. 15E2-2, pp. 450-451. Jul.. 1994.
T. Mukaihara, N. Ohnoki, Fumio Koyama, Kenichi Iga. "A novel polarization control structure for surface emitting lasers by a birefringent distributed Bragg reflector with a metal/dielectric polarizer". 13th Conf. on Lasers and Electro-Optics, CLEO'94. CMI2. May.. 1994.
Fumio Koyama, K. Y. Liou, A. G. Dentai, G. Raybon, C. A. Burrus. "Monolithic integration of GaInAs/GaInAsP strained quantum well DFB laser, electroabsorption modulator and optical amplifier by nonplanar MOVPE". 13th Conf. on Lasers and Electro-Optics, CLEO'94. CWJ4, p. 240. May.. 1994.
Kenichi Mori, Tomoyuki Miyamoto, Noriyuki Yokouchi, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "Band discontinuity reduction of i-GaInAsP/p-InP for improving 1.55μm GaInAsP/InP surface emitting laser performances". 1994 Int. Conf. on Indium Phosphide and Related Materials, IPRM'94. Mar.. 1994.

1993

論文

Takashi Uchida, Noriyuki Yokouchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Some optical characteristics of beryllium-doped InP grown by chemical beam epitaxy (CBE)". J. Crystal Growth. vol. 129. 1993.
T.Baba, Y.Yogo, K.Suzuki, Fumio Koyama, Kenichi Iga. "First Room Temperature CW Operation of GaInAsP/InP Surface Emitting Laser". IEICE Trans. Electronics. vol. E76-C, no. 9, pp. 1423-1424. Sep.. 1993.
Takashi Uchida, Tomoyuki Miyamoto, Noriyuki Yokouchi, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "CBE grown 1.5µm GaInAsP-InP surface emitting lasers". IEEE J. Quantum Electron.. vol. 29, no. 6. Jul.. 1993.
Yuichi Inaba, Takashi Uchida, Noriyuki Yokouchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "GaInAsP/InP multi-quantum barrier (MQB) grown by chemical beam epitaxy (CBE)". Jpn. J. Appl. Phys.. vol. 32, no. 2. Feb.. 1993.

学会発表

T. Baba, Y. YoG., K. Suzuki, Fumio Koyama, Kenichi Iga. "Room temperature continuous wave lasing characteristics of GaInAsP/InP surface emitting laser". 19th European Conf. on Optical Communication, ECOC'93. 1993.
T. Tamanuki, M. Kato, Y. Kaneko, H. Maekawa, T. Baba, Fumio Koyama, Kenichi Iga. "Threshold reduction of InGaAs/GaAlAs quantum-well laser using AlAs/GaAs multilayer distributed Bragg reflectors". OFC/IOOC'93, OFC'93. ThB3. 1993.
T. Baba, Y. YoG., K. Suzuki, Fumio Koyama, Kenichi Iga. "Low threshold room temperature pulsed and -31° CW operations of 1.3μm GaInAsP/InP buried heterostructure surface emitting lasers". OFC/IOOC'93, OFC'93. PD28. 1993.
Yuichi Inaba, Takashi Uchida, Noriyuki Yokouchi, Tomoyuki Miyamoto, Kenichi Mori, Fumio Koyama, Kenichi Iga. "Growth of GaInAs(P)/InP multi-quantum barrier (MQB) by chemical beam epitaxy,". 4th Int. Conf. on Chemical Beam Epitaxy and Related Growth Techniques, ICCBE-4. Jul.. 1993.
Noriyuki Yokouchi, Yuichi Inaba, Takashi Uchida, Tomoyuki Miyamoto, Kenichi Mori, Fumio Koyama, Kenichi Iga. "Composition change in GaInAs/InP super-lattice growth by chemical beam epitaxy". 4th Int. Conf. on Chemical Beam Epitaxy and Related Growth Techniques,ICCBE-4. Jul.. 1993.
Tomoyuki Miyamoto, Takashi Uchida, Noriyuki Yokouchi, Yuichi Inaba, Kenichi Mori, Fumio Koyama, Kenichi Iga. "Very low-threshold GaInAsP/InP surface emitting laser and its temperature characteristics". 12th Conf. on Lasers and Electro-Optics, CLEO'93. May.. 1993.
Noriyuki Yokouchi, Takashi Uchida, Tomoyuki Miyamoto, Yuichi Inaba, Kenichi Mori, Fumio Koyama, Kenichi Iga. "Loss and index change in GaInAs/InP multiple quantum well QCSE tuning element for surface emitting lasers". 5th Int. Conf. on Indium Phosphide and Related Materials, IPRM'93. Apr.. 1993.
T. Baba, Y. YoG., K. Suzuki, Fumio Koyama, Kenichi Iga. "First room temperature cw operation of GaInAsP/InP surface emitting laser". Quantum Optoelectronics Conf., QOE'93. D2, PostdeadlinePaper. Mar.. 1993.

1992

論文

Takashi Uchida, Toshikazu Uchida, Noriyuki Yokouchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Photoluminescence characterization of Ga_xIn_1-xAs (0<x<0.32) strained quantum wells grown on InP by chemical beam epitaxy". J. Crystal Growth. vol. 120. 1992.
Noriyuki Yokouchi, Tomoyuki Miyamoto, Takashi Uchida, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "40å continuous tuning of a GaInAsP/InP vertical-cavity surface-emitting laser using an external mirror". IEEE Photon. Technol. Lett.. vol. 4. Jul.. 1992.
Noriyuki Yokouchi, Takashi Uchida, Tomoyuki Miyamoto, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "An optical absorption property of highly beryllium-doped GaInAsP grown by chemical beam epitaxy". Jpn. J. Appl. Phys.. vol. 31. May.. 1992.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Characterization of Sidewall Damage Induced by Reactive Ion-Beam Etching". Jpn. J. Appl. Phys.. Vol. 31, No. 5A, pp. 1541-1544. May.. 1992.
Takashi Uchida, Noriyuki Yokouchi, Tomoyuki Miyamoto, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "GaInAsP/InP surface emitting lasers grown by chemical beam epitaxy". Electron. Lett.. vol. 28, no. 6. Mar.. 1992.

学会発表

H. Tanobe, M. Oshikiri, M. Araki, Fumio Koyama, Kenichi Iga. "A preliminary study on MG./Si multilayer reflectors for improving thermal conductance in surface emitting lasers". IEEE Lasers and Electro-Optics Society 1992 Annual Meeting, LEOS'92. DLTA12.2. Nov.. 1992.
Tomoyuki Miyamoto, Takashi Uchida, Noriyuki Yokouchi, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "A study on gain-resonance matchinG.f CBE grown λ=1.5μm surface emitting lasers". IEEE Lasers and Electro-Optics Society 1992 Annual Meeting, LEOS'92. Nov.. 1992.
Takashi Uchida, Tomoyuki Miyamoto, Noriyuki Yokouchi, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "CBE grown 1.5µm GaInAsP/InP surface emitting lasers". 13th Int. Semiconductor Laser Conf., ISLC'92. Sep.. 1992.
Noriyuki Yokouchi, Tomoyuki Miyamoto, Takashi Uchida, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "GaInAsP/InP surface emitting laser grown by CBE and wavelength tuning employing external reflector". 24th Int. Conf. on Solid State Devices and Materials,SSDM'92. Aug.. 1992.
A. Sasaki, T. Baba, Kenichi Iga. "Put-in microconnectors for alignment-free coupling of optical fiber arrays". IEEE Photon. Technol. Lett.. vol. 4, no. 8, pp. 908-910. Aug.. 1992.
T. Baba, K. Matsuoka, Fumio Koyama, Kenichi Iga. "Low threshold 1.3µm GaInAsP/InP flat-surface buried heterostructure surface emitting laser". 4th Optoelectronic Conf., OEC'92. 16C2-3. Jul.. 1992.
T. Tamanuki, Fumio Koyama, Kenichi Iga. "Consideration on threshold and modulation characteristics of photon-recycled surface emitting lasers". 4th Optoelectronic Conf., OEC'92. 16C2-4. Jul.. 1992.
Noriyuki Yokouchi, Takashi Uchida, Tomoyuki Miyamoto, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "Optical absorption measurement of highly beryllium-doped GaInAsP grown by chemical beam epitaxy". 4th Optoelectronic Conf., OEC'92. Jul.. 1992.
T. Takagi, Fumio Koyama, Kenichi Iga. "Quantum reflection and tunneling in multi-quantum barrier". 18th Int. Quantum Electron. Conf., IQEC'92. MoE3. Jun.. 1992.
S. Kubota, Fumio Koyama, Kenichi Iga. "Low threshold current density operation of a 1.3µm GaInAsP/InP transmission-type surface-emitting laser". 11th Conf. on Lasers and Electro-Optics, CLEO'92. JThD5. May.. 1992.
T. Mukaihara, Fumio Koyama, Kenichi Iga. "Stress effect on polarization of surface emitting lasers". 3rd Topical MeetinG.n Integrated Photonics Research, IPR'92. MC5-1. Apr.. 1992.
Takashi Uchida, Noriyuki Yokouchi, Tomoyuki Miyamoto, Yuichi Inaba, Fumio Koyama, Kenichi Iga. "Beryllium doping to InP and GaInAsP by chemical beam epitaxy (CBE)". 4th Int. Conf. on Indium Phosphide and Related Materials, IPRM'92. Apr.. 1992.
Y Suematsu, Kenichi Iga, Shigehisa Arai. "Advanced semiconductor lasers". Proc. IEEE. vol. 80, no. 3, pp. 383-397. Mar.. 1992.

1991

論文

Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Ultra-thin GaAs/InP layer growth by chemical beam epitaxy". J. Electronic Materials. vol. 20, no. 12. 1991.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Reactive Ion Beam Etch of GaInAsP/InP Multilayer and Removal of Damaged Layer by Two-Step Etch". Jpn. J. Appl. Phys.. Vol. 30, No. 9A, pp. 2123-2126. Sep.. 1991.
Takashi Uchida, Toshikazu Uchida, Noriyuki Yokouchi, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Beryllium doping for Ga_0.47In_0.53As/InP quantum wells by chemical beam epitaxy (CBE)". Jpn. J. Appl. Phys.. vol. 30. Jul.. 1991.
Noriyuki Yokouchi, Toshikazu Uchida, Takashi Uchida, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Room-temperature observation of excitonic absorption in Ga_xIn_1-xAs/InP (0.2<x<0.47) quantum wells grown by chemical beam epitaxy". Jpn. J. Appl. Phys.. vol. 30. May.. 1991.
Takemasa Tamanuki, Fumio Koyama, Kenichi Iga. "Estimation of threshold current of microcavity surface emitting laser with cylindrical waveguide". Japanese Journal of Applied Physics. vol. 30, no. 4A, pp. L593-L595. Apr.. 1991.
Takemasa Tamanuki, Fumio Koyama, Kenichi Iga. "Ammonium sulfide passivation for AlGaAs/GaAs buried hetero-structure laser fabrication process". Japanese Journal of Applied Physics. vol. 30, no. 3, pp. 499-500. Mar.. 1991.

学会発表

T. Hamano, T. Baba, Fumio Koyama, Kenichi Iga. "Estimation of spontaneous emission factor and lifetime in microcavity surface emitting lasers". 3rd Microoptics Conf., MOC'91. J4. 1991.
T. Takagi, Fumio Koyama, Kenichi Iga. "Design of modified multiple quantum barrier for 600 nm range AlGaInP lasers". 10th Conf. on Lasers and Electro-Optics, CLEO'91. CWP2. 1991.
T. Tamanuki, Fumio Koyama, Kenichi Iga. "RIBE and sulfur-passivated regrowth for GaAlAs/ GaAs BH lasers". 1991 IEEE/LEOS Summer Topical Meetings, LEOS Summer'91. TuB.5. 1991.
Kenichi Iga, Fumio Koyama, Akihiro Matsutani. "RIBE and RIE for micro cavity surface emitting lasers-technology and damage characterization". 1991 IEEE/LEOS Summer Topical Meetings, LEOS Summer'91. ThC.1. 1991.
Kenichi Iga, T. Uchida, Fumio Koyama. "CBE growth of lattice matched and strained GaInAs(P)/InP quantum wells and DBRs". 1991 IEEE/LEOS Summer Topical Meetings, LEOS Summer'91. MB.1. 1991.
M. Shimizu, T. Mukaihara, Fumio Koyama, Kenichi Iga. "A polarization control method for surface emitting lasers". 17th European Conf. on Optical Communication, ECOC'91. MoA1-4. 1991.
T. Baba, T. Hamano, Fumio Koyama, Kenichi Iga. "Spontaneous emission factor and lifetime of a microcavity DBR surface emitting laser with quantum wire structures". 10th Conf. on Lasers and Electro-Optics, CLEO'91. JTh-C4. 1991.
T. Tamanuki, Fumio Koyama, Kenichi Iga. "Ultimate characteristics of micro-cavity surface emitting lasers". 3rd Microoptics Conf., MOC'91. L20. 1991.
H. Tanobe, T. Tamanuki, T. Uchida, Fumio Koyama, Kenichi Iga. "A new spray wet etch process for micro-cavity GaAs/GaAlAs surface emitting lasers". 3rd Microoptics Conf., MOC'91. L9. 1991.
M. Oshikiri, Fumio Koyama, Kenichi Iga. "In situ optical thickness monitoring in Si/SiO2multi-layer deposition for GaInAsP/InP surface emitting laser reflectors". IEEE Lasers and Electro-Optics Society 1991 Annual Meeting, LEOS'91. SDL14.5. 1991.
Fumio Koyama, S. Kubota, Kenichi Iga. "GaAlAs/GaAs vertical surface emitting active filter". 13th Topical MeetinG.n Optical Amplifiers and Their Applications, OAA'91. FC2-1. 1991.
Fumio Koyama, S. Kubota, Kenichi Iga. "GaAlAs/GaAs vertical surface emitting active filter". 13th Topical MeetinG.n Optical Amplifiers and Their Applications, OAA'91. FC2-1. 1991.
Akihiro Matsutani, Fumio Koyama, Kenichi Iga. "Micro dry etching process for vertical cavity surface emitting lasers". AmE．an Vacuum Society Series, APCT'91. vol. 10, 227, pp. 112-115. 1991.
T. Tamanuki, T. Tadokoro, K. Morito, Fumio Koyama, Kenichi Iga. "Micro-fabrication techniques for semiconductor lasers". SPIE'91. no. 1361-77, pp. 614-617. 1991.
Toshikazu Uchida, Tomoyuki Miyamoto, Takashi Uchida, Noriyuki Yokouchi, Fumio Koyama, Kenichi Iga. "Photoluminescence characterization of Ga_xIn_1-xAs (0<x<0.32) strained quantum wells grown on InP by chemical beam epitaxy". 3rd Int. Conf. on Chemical Beam Epitaxy and Related Growth Techniques. Sep.. 1991.
T. Uchida, Tomoyuki Miyamoto, T. Uchida, N. Yokouchi, Fumio Koyama, Kenichi Iga. "Photoluminescence characterization of GaxIn1-x As (0<x<0.32) strained quantum wells grown on InP by chemical beam epitaxy". 3rd Int. Conf. on Chemical Beam Epitaxy and Related Growth Techniques, ICCBE-3. Sep.. 1991.
T. Takagi, Fumio Koyama, Kenichi Iga. "Electron wave reflection by multi-quantum barrier (MQB) 23th Int. Conf. on Solid State Devices and Materials". 23th Int. Conf. on Solid State Devices and Materials, SSDM'91. C-2-1. Aug.. 1991.
T. Tamanuki, Fumio Koyama, Kenichi Iga. "Surface recombination reduction by (NH4) 2Sx-passivation in MOCVD regrowth for AlGaAs/GaAs BH lasers". 23th Int. Conf. on Solid State Devices and Materials, SSDM'91. PC1-3. Aug.. 1991.
Tomoyuki Miyamoto, T. Uchida, Fumio Koyama, Kenichi Iga. "PL study on structure dependence of GaxIn1-xAs/InP strained multi-quantum wells grown by CBE". 23th Int. Conf. on Solid State Devices and Materials, SSDM'91. Aug.. 1991.
Tomoyuki Miyamoto, Toshikazu Uchida, Fumio Koyama, Kenichi Iga. "PL study on structure dependence of Ga_xIn_1-xAs/InP strained multi-quantum wells grown by CBE". 23th Int. Conf. on Solid State Devices and Materials. Aug.. 1991.
N. Yokouchi, T. Uchida, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Ultra-thin GaxIn1-xAs/InP (0<x<0.47) layer growth by chemical beam epitaxy". 3rd Int. Conf. on Indium Phosphide and Related Materials, IPRM'91. Apr.. 1991.
Noriyuki Yokouchi, Toshikazu Uchida, Takashi Uchida, Tomoyuki Miyamoto, Fumio Koyama, Kenichi Iga. "Ultra-thin Ga_xIn_1-xAs/InP (0<x<0.47) layer growth by chemical beam epitaxy". 3rd Int. Conf. on Indium Phosphide and Related Materials. Apr.. 1991.
M. Shimizu, Fumio Koyama, Kenichi Iga. "BPM simulation of transverse mode characteristics in surface emitting laser". 2nd Topical MeetinG.n Integrated Photonics Research, IPR'91. ThI41, pp. 129. Apr.. 1991.

1990

論文

E Ho, Fumio Koyama, Kenichi Iga. "Effective reflectivity from self-imaging in a Talbot cavity and its effect on the threshold of a finite 2-D surface emitting laser array". Appl. Opt.. vol. 29, no. 34, pp. 5080-5085. 1990.
Toshi K. Uchida, Takashi Uchida, Noriyuki Yokouchi, Fumio Koyama, Kenichi Iga. "Highly beryllium-doped GaInAs grown by chemical beam epitaxy". Japanese Journal of Applied Physics. Vol. 29-2, No. 12, pp. L2146-L2148. 1990.
T. Takagi, Fumio Koyama, Kenichi Iga. "Photoluminescence study of electron wave confinement in multi-quantum barrier (MQB)". J. Appl. Phys. vol. 29, no. 11, pp. 1969-1972. Nov.. 1990.
T. Takagi, Fumio Koyama, Kenichi Iga. "Potential barrier height analysis of AlGaInP multi-quantum barrier (MQB". Jpn. J. Appl. Phys.. vol. 29, no. 11, pp. 1977-1980. Nov.. 1990.
T. Uchida, Noriyuki Yokouchi, Kazuaki Mise, Fumio Koyama, Kenichi Iga. "Cracking yield dependence of InP growth by chemical beam epitaxy". Jpn. J. Appl. Phys. vol. 29, no. 10, pp. 1738-1740. Oct.. 1990.
Noriyuki Yokouchi, Fumio Koyama, Kenichi Iga. "Estimation of tunable wavelength range in surface emitting laser using intra-cavity quantum-well tuner". Trans. IEICE. vol. E73, no. 9, pp. 1473-1475. Sep.. 1990.
T. Uchida, Kazuaki Mise, Noriyuki Yokouchi, Fumio Koyama, Kenichi Iga. "Growth of Ga0.47In0.53As-InP double-heterostructure wafer by chemical beam epitaxy". Jpn. J. Appl. Phys. vol. 29, no. 9, pp. 1771-1772. Sep.. 1990.
T. Uchida, K. Mise, Fumio Koyama, Kenichi Iga. "Extremely high Be doped Ga0.47In0.53As growth by chemical beam epitaxy". J. Crystal Growth. vol. 105, pp. 366-370. Sep.. 1990.
H. Tanobe, Fumio Koyama, Kenichi Iga. "Spectral linewidth measurement of a GaAs/GaAlAs surface emitting laser". Trans. IEICE. vol. J73-C-I, no. 5, pp. 241-245. May.. 1990.
Ken Morito, Fumio Koyama, Kenichi Iga. "Intensity noise of GaAlAs/GaAs surface emitting laser,". Jpn. J. Appl. Phys. vol. 29, no. 2, pp. 299-300. Mar.. 1990.
T. Uchida, Kazuaki Mise, Fumio Koyama, Kenichi Iga. "Highly beryllium-doped and lattice-matched GaInAsP/InP growth by chemical beam epitaxy (CBE)". Jpn. J. Appl. Phys.. vol. 29, no. 3, pp. 562-563. Mar.. 1990.

学会発表

Kenichi Iga, Fumio Koyama. "Potential performance of surface emitting lasers". IEEE Lasers and Electro-Optics Society 1990 Annual Meeting, LEOS'90. SDL1.1/MKK1, pp. 198. Nov.. 1990.
E. Ho, Fumio Koyama, Kenichi Iga. "Close-packed 3×3 surface emitting laser array grown by a two-step MOCVD". IEEE Lasers and Electro-Optics Society 1990 Annual Meeting, LEOS'90. SDL1.6/MKK6, pp. 203. Nov.. 1990.
Fumio Koyama, K. Morito, Kenichi Iga. "Consideration on intensity noise of GaAlAs/GaAs surface emitting laser". 12th Int. Semiconductor Laser Conf., ISLC'90. H-5, pp. 116-117. Sep.. 1990.
T. Baba, T. Hamano, Fumio Koyama, Kenichi Iga. "Spontaneous emission factor of a microcavity DBR surface emitting laser". 16th European Conf. on Optical Communication, ECOC'90. vol. 3, ThG-1.3, pp. 995-998. Sep.. 1990.
T. Uchida, T. Uchida, K. Mise, N. Yokouchi, Fumio Koyama, Kenichi Iga. "GaInAs/InP MQW and DBR growth for surface emitting lasers". 6th Int. Conf. Molecular Beam Epitaxy, ICMBE-6, PIV-21. Aug.. 1990.
T. Uchida, T. Uchida, N. Yokouchi, K. Mise, Fumio Koyama, Kenichi Iga. "GaInAs/InP multi-quantum wells and strained super-lattices grown by chemical beam epitaxy". 22th Int. Conf. on Solid State Devices and Materials, SSDM'90. B-4-5, pp. 115-118. Aug.. 1990.
Kenichi Iga, Fumio Koyama. "Vertical cavity surface emitting lasers --- Device technology and future prospects ---". 22th Int. Conf. on Solid State Devices and Materials, SSDM'90. D-3-1, pp. 517-520. Aug.. 1990.
T. Takagi, Fumio Koyama, Kenichi Iga. "Experimental verification of electron wave confinement by multi-quantum barrier (MQB)". 3rd Optoelectronic Conf., OEC'90. PD-3, pp. 10-11. Jul.. 1990.
Fumio Koyama, Kenichi Iga. "Spectral and modulation characteristics of vertical cavity surface emitting laser". 3rd Optoelectronic Conf., OEC'90. 13B1-1, pp. 196-197. Jul.. 1990.
M. Shimizu, Fumio Koyama, Kenichi Iga. "BPM analysis for transverse mode stabilization of surface emitting laser". 3rd Optoelectronic Conf., OEC'90. 13B1-5, pp. 204-205. Jul.. 1990.
Kenichi Iga, Fumio Koyama, K. Morito, H. Tanobe. "Phase and intensity noise of vertical cavity surface emitting laser". 9th Conf. on Lasers and Electro-Optics, CLEO'90. vol. 7, CFF2, pp. 502. May.. 1990.
T. Uchida, T. Uchida, K. Mise, Fumio Koyama, Kenichi Iga. "Highly rate growth of Ga0.47In0.53As/InP by chemical beam epitaxy". 2nd Int. Conf. on Indium Phosphide and Related Materials, IPRM'90. TuA.7, pp. 144-147. Apr.. 1990.

1989

論文

M. Shimizu, Fumio Koyama, Kenichi Iga. "Estimation of diffraction loss in surface emitting laser cavity by beam propagation method". Trans. IEICE. vol. E72, no. 1, pp. 1050-1051. Oct.. 1989.
T. Uchida, Fumio Koyama, Kenichi Iga. "Estimation of linewidth for a surface emitting laser with multilayer DBRs". Trans. IEICE. vol. E72, no. 10, pp. 1084-1085. Oct.. 1989.
Takashi Tadokoro, Fumio Koyama, Kenichi Iga. "Classification of etching mechanism in reactive ion beam etch,” J. Vac. Sci. Technol". J. Vac. Sci. Technol.. vol. B7, no. 5, pp. 1111-1114. Sep.. 1989.
Fumio Koyama, Susumu Kinoshita, Kenichi Iga. "Room temperature continuous wave lasing characteristics of a GaAs vertical cavity surface-emitting laser". Appl. Phys. Lett.. vol. 55, no. 3, pp. 221-222. Jul.. 1989.
Hiroyuki Uenohara, Fumio Koyama, Kenichi Iga. "AlGaAs/GaAs multiquantum well (MQW) surface-emitting laser". Electron. Lett.. vol. 25, no. 12, pp. 770-771. Jun.. 1989.
Kenichi Iga, Fumio Koyama, Susumu Kinoshita. "Surface emitting semiconductor laser array: Its advantage and future". J. Vac. Sci. Technol. vol. A7, no. 3, pp. 842-846. May.. 1989.
Hiroyuki Uenohara, Fumio Koyama, Kenichi Iga. "Application of the multi-quantum well (MQW) to a surface emitting laser". Jpn. J. Appl. Phys.. vol. 28, no. 4, pp. 740-741. Apr.. 1989.

学会発表

T. Uchida, T. Uchida, K. Mise, Fumio Koyama, Kenichi Iga. "Extremely high be doped GaInAs grown by chemical beam epitaxy". 2nd Int. Conf. on Chemical Beam Epitaxy and Related Growth Techniques. ICCBE-2, WP-7. 1989.
T. Uchida, K. Mise, T. Uchida, Fumio Koyama, Kenichi Iga. "High rate growth and wide range Be dopinG.f GaInAsP/InP chemical beam epitaxy". APCT'89. P-1, 99-102. 1989.
T. Tadokoro, Fumio Koyama, Kenichi Iga. "Low damage etchinG.f GaInAsP/InP and GaAlAs/GaAs by reactive ion beam etch and removal of residual damages". APCT'89. P-13, pp. 147-150. 1989.
Fumio Koyama, Susumu Kinoshita, Kenichi Iga. "Lasing characteristics of room temperature cw GaAs surface emitting laser". 7th International Conference on Integrated Optics and Optical Fiber Communication, IOOC'89. vol. 1, No. 18B1-2, pp. 20-21. 1989.
E. Ho, Fumio Koyama, Kenichi Iga. "Effective reflectivity and threshold of self-imaged surface emitting laser array". 2nd Microoptics Conf. and 8th Topical MeetinG.n Gradient-Index Optical Systems, MOC/GRIN'89. J2, pp. 242-24. 1989.
Fumio Koyama, Kenichi Iga. "Spectral behavior of vertical cavity surface emitting laser". Second Regional Symp. on Optoelectronics, RSOE'89. MoB-1, pp. 25-28. 1989.
Hiroyuki Uenohara, Fumio Koyama, Kenichi Iga. "AlGaAlAs/GaAs multiquantum well (MQW) surface emitting inJunection laser". 15th European Conf. on Optical Communication, ECOC'89. WeB16-5, pp. 304-307. 1989.
Fumio Koyama, Susumu Kinoshita, Kenichi Iga. "Room temperature cw vertical cavity surface emitting laser and high power 2-D laser array". 8th Conf. on Lasers and Electro-Optics, CLEO'89. FC1, pp. 380. 1989.

1988

論文

Fumio Koyama, S Kinoshita, Kenichi Iga. "Room temperature cw operation of GaAs vertical cavity surface emitting laser". Trans. IEICE of Japan. vol. E71, no. 11, pp. 1089-1090. 1988.
Fumio Koyama, Ryo Kinoshita, Kenichi Iga. "Room temperature cw operation of GaAs vertical cavity surface emitting laser". Trans. IEICE. vol. E71, no. 11, pp. 1089-1090. 1988.
Kenichi Iga, S. Kinoshita, Fumio Koyama. "Recent advances of surface emitting semiconductor lasers". Optoelectronics Device and Technologies. vol. 3, no. 2, pp. 131-142. 1988.
Takahiro Sakaguchi, M. Oshikiri, Fumio Koyama, Kenichi Iga. "TiO/SiO dielectric multilayer reflector for surface emitting semiconductor lasers". Proc. MRS Int'l MeetinG.n Advanced Materials. vol. 10, pp. 243-251. 1988.
Kohroh Kobayashi, I. Mito. "Single Frequency and Tunable Semiconductor Laser Diodes". IEEE J. Lightwave Tech.. Vol. LT-6, No. 11, pp. 1623-1633. Nov.. 1988.
Kenichi Iga, Fumio Koyama, S. Kinoshita. "Surface emitting lasers". Trans. IEICE. vol. J71-C, no. 11, pp. 1493-1500. Nov.. 1988.
J. Nitta, Fumio Koyama, Kenichi Iga. "Pulse operation of GaAs/AlGaAs surface-emitting-laser-type optical threshold device". Trans. IEICE. vol. J71-C, no. 9, pp. 1267-1273. Sep.. 1988.
M. Shimizu, Fumio Koyama, Kenichi Iga. "Polarization characteristics of MOCVD grown GaAs/GaAlAs CBH surface emitting lasers". Jpn. J. Appl. Phys. vol. 27, no. 9, pp. 1774-1775. Sep.. 1988.
Takahiro Sakaguchi, Fumio Koyama, Kenichi Iga. "Vertical cavity surface emitting laser with AlGaAs/AlAs Bragg reflector". Electronics Letter. Vol. 24, No. 15, pp. 928-929. Aug.. 1988.
H. Kawasaki, Fumio Koyama, Kenichi Iga. "Improvement of a flat surface circular buried heterostructure GaInAsP/InP surface emitting laser". Jpn. J. Appl. Phys.. vol. 27, no. 8, pp. 1548-1549. Aug.. 1988.
S. Kinoshita, K. Morito, Fumio Koyama, Kenichi Iga. "Reproducible fabrication of AlGaAs/GaAs circular buried heterostructure (CBH) surface-emitting lasers with low threshold". Electron. Lett.. vol. 24, no. 11, pp. 699-700. May.. 1988.
T. Tadokoro, Fumio Koyama, Kenichi Iga. "Classification of etching mechanism in reactive ion beam etching". Trans. IEICE. vol. J71-C, no. 6, pp. 841-845. May.. 1988.
Fumio Koyama. "A study on etching parameters of a reactive ion beam etch for GaAs and InP". Jpn. J. Appl. Phys.. vol. 27, no. 3, pp. 389-392. Mar.. 1988.
H. Onda, H, Hiroyuki Uenohara, Fumio Koyama, Kenichi Iga. "Evaluation of MQW wafer for surface emitting laser by x-ray diffraction". Jpn. J. Appl. Phys.. vol. 27, no. 3, pp. 438-439. Mar.. 1988.

学会発表

Kenichi Iga, Fumio Koyama, S. Kinoshita. "Surface emitting semiconductor laser array - its advantage and future". 35th National Symposium of the AmE．an Vacuum Society. EM-FrM6. 1988.
T Sakaguchi, Fumio Koyama, Kenichi Iga. "Vertical cavity surface emitting laser with an AlGaAs/AiAs Bragg reflector". Electron Lett.. vol. 24, no. 5, pp. 928-929. 1988.
Fumio Koyama, S. Kinoshita, Kenichi Iga. "Room temperature cw operation of GaAs vertical cavity surface emitting laser". 2nd Optoelectronic Conf., OEC'88. PD-4, pp. 8-9. Oct.. 1988.
Kenichi Iga, Fumio Koyama, S Kinoshita. "Surface emitting semiconductor lasers". IEEE J. Quantum Electron. vol. QE24, no. 9, pp. 1845-1855. Sep.. 1988.
Kenichi Iga, Fumio Koyama, S. Kinoshita. "Surface emitting semiconductor lasers". IEEE J. Quantum Electron.. vol. QE-24, no. 9, pp. 1845-1855. Sep.. 1988.
Fumio Koyama, Kenichi Iga. "Frequency chirping in external modulators". IEEE J. Quantum Electron. vol. QE24, no. 9, pp. 1845-1855. Sep.. 1988.
Takahiro Sakaguchi, Fumio Koyama, Kenichi Iga. "A vertical cavity GaAs/AlAs DBR surface emitting laser and its lasing characteristics". 11th Int. Semiconductor Laser Conf., ISLC'88. N-1, pp. 162-163. Aug.. 1988.
M. Oshikiri, H. Kawasaki, Fumio Koyama, Kenichi Iga. "Reflectivity dependence of threshold current in GaInAsP/InP surface emitting laser". 16th Int. Quantum Electron. Conf., IQEC'88. PD-22. Jul.. 1988.
Takahiro Sakaguchi, M. Oshikiri, Fumio Koyama, Kenichi Iga. "TiO2 (or Si)/SiO2 dielectric multilayer reflector for surface emitting semiconductor lasers". Int. MeetinG.n Advanced Materials. K4.6. May.. 1988.
Fumio Koyama, K. Tomomatsu, Kenichi Iga. "GaAs/GaAlAs CBH surface emitting lasers grown by MOCVD and a 2-D locked laser array". 8th Conf. on Lasers and Electro-Optics, CLEO'88. WO5. Apr.. 1988.
M. Shimizu, Fumio Koyama, Kenichi Iga. "Polarization characteristics of MOCVD-Grown GaAs/GaAlAs CBH surface emitting lasers". 9th Topical MeetinG.n Integrated and Guided-Wave Optics, IWG.'88. WA3. Mar.. 1988.

1987

論文

I. Watanabe, Fumio Koyama, Kenichi Iga. "GaInAsP/InP CBH surface emitting laser with a dielectric multilayer reflector". Jpn. J. Appl. Phys.. vol. 26, no. 9, pp. 1598-1599. Sep.. 1987.
Fumio Koyama, Hiroyuki Uenohara, Takahiro Sakaguchi, Kenichi Iga. "GaAlAs/GaAs MOCVD growth for Surface Emitting Laser". Jpn. J. Appl. Phys.. Vol. 26, No. 7, pp. 1077-1081. Jul.. 1987.
Kenichi Iga, Fumio Koyama. "Single longitudinal mode operation of directly modulated GaAlAs/GaAs surface emitting laser". Trans. IEICE. vol. E70, no. 5, pp. 455-457. May.. 1987.
Kenichi Iga, Fumio Koyama. "Lateral carrier diffusion effect in parametric modulation of semiconductor lasers". Trans. IEICE. vol. E70, no. 5, pp. 458－459. May.. 1987.
Susumu Kinoshita, Takahiro Sakaguchi, Tetsushi Odagawa, Kenichi Iga. "GaAlAs/GaAs Surface Emitting Laser with High Reflective TiO2/SiO2 Multilayer Bragg Reflector". Jpn. J. Appl. Phys.. Vol. 26, No. 3, pp. 410-415. Mar.. 1987.

学会発表

Kenichi Iga, S. Kinoshita, Fumio Koyama. "Overview of the progress in surface emitting lasers". pical Conference on Compound Semiconductor Growth, rocessing and Devices for 1990's Gainesville. pp. 341-359. Oct.. 1987.
Kenichi Iga, Fumio Koyama, S. Kinoshita. "Surface emitting lasers and related electrooptic application". 13th European Conf. on Optical Communication, ECOC'87. pp. 3-10. Sep.. 1987.
I. Watanabe, Fumio Koyama, Kenichi Iga. "77K CW operation (Ith=15mA) of GaInAsP/InP CBH surface-emitting laser". 13th European Conf. on Optical Communication, ECOC'87. pp. 31-34. Sep.. 1987.
Hiroyuki Uenohara, Kenichi Iga, Fumio Koyama. "Electron reflectance and leakage of a multiquantum barrier". 7th Conf. on Lasers and Electro-Optics, CLEO'87. TUJ3. Apr.. 1987.
Kenichi Iga, Seiji Uchiyama, S. Kinoshita, Fumio Koyama. "Recent progress in surface-emitting lasers". WA6. Feb.. 1987.

1986

論文

I. Watanabe, Fumio Koyama, Kenichi Iga. "Low temperature CW operation of GaInAsP/InP surface emitting laser with circular buried heterostructure". Electron. Lett. vol. 22, no. 25, pp. 1325－1327. 1986.
Kenichi Iga, Hiroyuki Uenohara, Fumio Koyama. "Electron reflectance of multiquantum Barrier (MQB)". Electron. Lett. vol. 22, no. 19, pp. 1008－1010. Sep.. 1986.

学会発表

Kenichi Iga, , Fumio Koyama. "Micro-cavity GaAlAs/GaAs surface emitting laser with Ith = 6mA". ISLC'86. PD-4. Oct.. 1986.
Kenichi Iga, Hiroyuki Uenohara, Fumio Koyama. "Electron reflectance of multiquantum Barrier (MQB)". Electron. Lett. vol. 22, no. 19, pp. 1008-1010. Sep.. 1986.
Fumio Koyama, H. Segawa, A Nakamura, Takahiro Sakaguchi, Kenichi Iga. "MOCVD growth and characterization of GaAlAs/GaAs multi-heterostructure for surface emitting laser". 12th European Conf. on Optical Communication, ECOC'86. pp. 97-100. Sep.. 1986.
Fumio Koyama, H. Segawa, S. Kinoshita, Hiroyuki Uenohara, Takahiro Sakaguchi, A.Nakamura, Kenichi Iga. "GaAlAs/GaAs MOCVD growth device and materials". 18th Int. Conf. on Solid State Devices and Materials, SSDM'86. C-9-3, pp. 757-758. Aug.. 1986.
Kenichi Iga, Fumio Koyama. "Ultrahigh-speed parametric modulation schemes of semiconductor lasers". OFC'86. WBB4. Feb.. 1986.
Fumio Koyama, Kenichi Iga. "Frequency chirpinG.f external modulation and its reduction". OFC'86. WBB5. Feb.. 1986.

1985

論文

Kohroh Kobayashi, I. Mito. "High Light Output Power Single-Longitudinal-Mode Semiconductor Laser Diodes". IEEE J. Lightwave Tech.. Vol. LT-3, No. 6, pp. 1202-1210. 1985.
Fumio Koyama, Kenichi Iga. "Frequency chirping of external modulation and its reduction". Electron. Lett.. vol. 21, no. 23, pp. 1065-1066. Nov.. 1985.

学会発表

Kenichi Iga. "Modulation limit of semiconductor lasers by some parametric modulation schemes". Trans. IECE of Japan. vol. 68, no. 7, pp. 417-420. Oct.. 1985.

1984

論文

Fumio Koyama, K. Sekartedjo, B. Broberg, Kazuhito Furuya, Y. Suematsu. "Active distributed reflector laser phase adjusted by groove region". The Japanese Journal of Applied Physics. Vol. 23, No. 10, pp. L791-L794. Oct.. 1984.
M. Kitamura, M.Yamaguchi, S. Murata, I.Mito, Kohroh Kobayashi. "High Performance Single-Longitudinal-Mode Operation of InGaAsP/InP DFB-DC-PBH LDs". IEEE J. Lightwave Tech.. Vol. LT-2, No. 4, pp. 363-369. Aug.. 1984.
Fumio Koyama, Y Suematsu, K.Kojima, K.Furuya, Kazuhito Furuya. "1.5μm Phase Adjusted Active Distributed Reflector Laser for Dynamic Single-Mode Operation". Electron. Lett.. Vol. 20, No. 10, pp. 391-393. May.. 1984.
T. Tanbun-Ek, Shinzo Suzaki, W. S. Min, Y. Suematsu, Fumio Koyama, S. Arai. "Static characteristics of 1.5-1.6 μm GaInAsP/InP buried heterostructure butt-joined built-in integrated lasers". IEEE J. Quantum Electron.. vol. QE-20, no. 2, pp. 131-140. Feb.. 1984.

1983

論文

Fumio Koyama, Y Suematsu, Shigehisa Arai, T. Tanbun-Ek. "1.5-1.6 μm GaInAsP/InP dynamic-single-mode (DSM) lasers with distributed Bragg reflector". IEEE J.Quantum Electron. vol. QE-19, no. 6, pp. 1042-1051. Jun.. 1983.

学会発表

H Soda, Y Motegi, Kenichi Iga. "GaInAsP/InP surface emitting injection lasers with short cavity length". IEEE J. Quantum Electron. vol. QE-19, no. 6, pp. 1035-1041. Jun.. 1983.

1982

論文

Y. Abe, K. Kishino, T. Tanbun-Ek, S. Arai, Fumio Koyama, Keita Matsumoto, T. Watanabe, Y. Suematsu. "Room temperature CW operation of 1.6m GaInAsP/InP buried heterostructure integrated laser with butt-joined built-in distributed-Bragg-reflection waveguide". Electron. Lett. vol. 18, no. 10, pp. 410-411. May.. 1982.

学会発表

Y Motegi, H Soda, Kenichi Iga. "Surface emitting GainAsP/InP injection laser with short cavity length". Electron. Lett.. vol. 18, no. 11, pp. 461-463. May.. 1982.

1981

論文

Fumio Koyama, Shigehisa Arai, Y Suematsu, K. Kishino. "Dynamic spectral width of rapidly modulated 1.58μm GaInAsP/InP buried-heterostructure distributed-Bragg-reflector integrated-twin-guide lasers". Electron. Lett. vol. 17, no. 25, pp. 938-940. 1981.
T. Tanbun-Ek, Shigehisa Arai, Fumio Koyama, K. Kishino, S. Yoshizawa, T. Watanabe, Y. Suematsu. "Low threshold current CW operation of GaInAsP/InP buried heterostructure distributed Bragg-reflector integrated-twin-guide laser emitting at 1.5-1.6μm". Electron. Lett.. vol. 17, no. 25, pp. 967-968. 1981.

学会発表

M. Oikawa, M. Sanada, Kenichi Iga, N. Yamamoto, K. Nishizawa. "Array of distributed-index planar micro-lenses prepared from ion exchange technique". apan. J. of Appl. Phys.. vol. 20, no. 4, pp. L296-L298. Apr.. 1981.

1980

論文

R. Lang, Kohroh Kobayashi. "External Optical Feedback Effects on Semiconductor Injection Laser Properties". IEEE J. Quantum Electron.. Vol. QE-16, No. 3, pp. 347-355. Mar.. 1980.

学会発表

Kenichi Iga, M. A. Pollack, B. I. Miller, R. J. Martin. "GaInAsP/InP DH lasers with a chemically etched facet". IEEE J. of Quant. Elect. vol. QE-16, no. 10, pp. 1044-1047. Oct.. 1980.
Kenichi Iga, B. I. Miller. "C.W. operation of GaInAsP/InP laser with chemically etched mirror". Electron. Lett.. vol. 16, no. 22, pp. 830-832. Oct.. 1980.
L. A. Coldren, Kenichi Iga, B. I. Miller, J. A. Rentschler. "Integrated GaInAsP/InP laser formed by reactive-ion-etching". 38th Annual Device Research Conference. vol. IVB-5. Jun.. 1980.
Kenichi Iga. "Theory for gradient-index imaging". Appl. Opt.. vol. 19, no. 7, pp. 1039-1043. Apr.. 1980.
Kenichi Iga, B. I. Miller. "GaInAsP/InP laser with monolithically integrated monitoring detector". Electron. Lett.. vol. 16, no. 9, pp. 342-343. Apr.. 1980.

1979

学会発表

H Soda, Kenichi Iga, C Kitahara, Y Suematsu. "GaInAsP/InP surface emitting injection lasers". Jpn. J. Appl. Phys.. vol. 18, no. 12, pp. 2329-2330. 1979.
Kenichi Iga, T. Kambayashi, K. Wakao, C Kitahara, K. Moriki. "GaInAsP/InP Double-heterostructure planar LED's". IEEE Trans. on Electron Devices. vol. ED-26, no. 8, pp. 1227-1230. Aug.. 1979.
Kenichi Iga, T. Kambayashi, K. Wakao, K. Moriki, C Kitahara. "GaInAsP/InP DH Lasers and Related Fabrication Techniques for Integration". IEEE J. of Quantum Electron.. vol. QE-26, no. 8, pp. 707-710. Aug.. 1979.

1978

学会発表

Y. Takahashi, Kenichi Iga. "An analysis on single wavelength oscillation of semiconductor laser at high speed pulse modulation". Trans. IECE of Japan. vol. E61, no. 9, pp. 685-689. Sep.. 1978.
Kenichi Iga, Y. Kokubun. "Formulas for calculating the refractive index profile of optical fibers from their transverse interference patterns". Appl. Opt.. vol. 17, no. 12, pp. 1972-1974. Jun.. 1978.

1977

学会発表

Y. Itaya, Y Suematsu, Kenichi Iga. "Carrier life measurement of GaInAsP/InP double-heterostructure lasers". Japan. J. Appl. Phys.. vol. 16, no. 6, pp. 1057-1058. Jun.. 1977.
Kenichi Iga, N. Yamamoto. "Plastic focusing fiber for imaging application". Appl. Opt.. vol. 16, no. 5, pp. 1305-1311. May.. 1977.

1966

学会発表

Y Suematsu, Kenichi Iga, S. Ito. "A light beam waveguide using hyperbolic-type gas lens". IEEE Trans. MTT. vol. MTT-14, no. 12, pp. 657-665. 1966.
Y. Suematsu, Kenichi Iga. "Mode conversion of optical beam transmission systems". IECE of Japan. vol. 49, no. 9, pp. 59-66. Sep.. 1966.
Y Suematsu, Kenichi Iga, Y. Fukinuki. "Beam focusing in gas lenses". IECE of Japan. vol. 49, no. 4, pp. 232-238. Apr.. 1966.
Y Suematsu, Kenichi Iga. "Experiment on quasi-fundamental mode oscillation of ruby laser". Proc. IEEE. vol. 52, no. 1, pp. 748-754. Apr.. 1966.