@article{CTT100934362,
  author = {馬場俊彦 and 川原啓輔},
  title = {光電融合設計による小型高性能マッハ・ツェンダー光変調器},
  journal = {光学},
  year = 2025,
}

@article{CTT100934136,
  author = {Keisuke Kawahara and Toshihiko Baba},
  title = {Electro-Optic Co-Simulation in High-Speed Silicon Photonics Transceiver Design Using Standard Electronic Circuit Simulator},
  journal = {IEEE Journal of Microwaves},
  year = 2025,
}

@article{CTT100934137,
  author = {Keisuke Kawahara and Tai Tsuchizawa and Noritsugu Yamamoto and Yuriko Maegami and Koji Yamada and Shinsuke Hara and Toshihiko Baba},
  title = {High-speed, low-voltage, low-bit-energy silicon photonic crystal slow-light modulator with impedance-engineered distributed electrodes},
  journal = {Optica},
  year = 2024,
}

@article{CTT100934142,
  author = {Keisuke Kawahara and Yohtaro Umeda and Kyoya Takano and Shinsuke Hara},
  title = {A 0.0058-mm2 Inductor-Less CMOS Active Balun With Gain and Phase Errors Within −0.1 ± 0.2 dB and −0.18 ± 1.17° From DC to 8 GHz},
  journal = {IEEE Transactions on Circuits and Systems I: Regular Papers},
  year = 2023,
}

@article{CTT100934143,
  author = {Keisuke Kawahara and Joe Sawada and Takumi Kamo and Yohtaro Umeda and Kyoya Takano and Shinsuke Hara},
  title = {Bandwidth Tripler: Broadband Signal Generation With an Image-Rejection Analog Multiplexer for Fiber Optic Transmitters},
  journal = {IEEE Transactions on Microwave Theory and Techniques},
  year = 2023,
}

@article{CTT100934144,
  author = {Keisuke KAWAHARA and Yohtaro UMEDA and Kyoya TAKANO and Shinsuke HARA},
  title = {A Compact Fully-Differential Distributed Amplifier With Coupled Inductors in 0.18-μm CMOS Technology},
  journal = {IEICE Transactions on Electronics},
  year = 2023,
}

@inproceedings{CTT100934341,
  author = {川原啓輔 and 土澤泰 and 山本宗継 and 前神有里子 and 山田浩治 and 馬場俊彦},
  title = {光電気等化によるSiフォトニック結晶光変調器の100 Gbaud動作},
  booktitle = {},
  year = 2025,
}

@inproceedings{CTT100934342,
  author = {Keisuke Kawahara and Tai Tsuchizawa and Noritsugu Yamamoto and Yuriko Maegami and Koji Yamada and Shinsuke Hara and Toshihiko Baba},
  title = {Optical Transmitter with Silicon Slow-Light Modulator and BiCMOS Current-Mode Driver Achieving 0.78 pJ/bit Total Bit Energy},
  booktitle = {},
  year = 2025,
}

@inproceedings{CTT100934135,
  author = {Keisuke Kawahara and Toshihiko Baba},
  title = {Accurate EO co-simulation of Si photonics using a standard electronic circuit simulator},
  booktitle = {Smart Photonic and Optoelectronic Integrated Circuits 2025},
  year = 2025,
}

@inproceedings{CTT100934138,
  author = {Keisuke Kawahara and Toshihiko Baba},
  title = {DAC- and DSP-Free Optical Transmitter Based on Triple-Parallel Si Mach-Zehnder Modulators},
  booktitle = {2024 IEEE Silicon Photonics Conference (SiPhotonics)},
  year = 2024,
}

@inproceedings{CTT100934139,
  author = {Kawahara, Keisuke and Tsuchizawa, Tai and Yamamoto, Noritsugu and Maegami, Yuriko and Yamada, Koji and Hara, Shinsuke and Baba, Toshihiko and Keisuke Kawahara},
  title = {1.9-pJ/bit 0.5-mm2 High-Speed Optical Transmitter including Silicon Slow-Light Modulator and Current-Mode BiCMOS Driver},
  booktitle = {ECOC 2024; 50th European Conference on Optical Communication},
  year = 2024,
}

@inproceedings{CTT100934140,
  author = {Keisuke Kawahara and Tai Tsuchizawa and Noritsugu Yamamoto and Yuriko Maegami and Koji Yamada and Toshihiko Baba},
  title = {59-fJ/bit Si Photonic Crystal Slow-Light Modulator with FinFET-Compatible Driving Voltage},
  booktitle = {Optical Fiber Communication Conference (OFC) 2024},
  year = 2024,
}

@inproceedings{CTT100934141,
  author = {Keisuke Kawahara and Toshihiko Baba},
  title = {Modeling of Si Rib and Photonic Crystal Mach-Zehnder Modulators for Electro-Optic Co-Simulation up to 64 Gbaud},
  booktitle = {2023 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO)},
  year = 2023,
}

@inproceedings{CTT100934145,
  author = {Keisuke Kawahara and Keisuke Kawahara and Joe Sawada and Takumi Kamo and Yohtaro Umeda and Kyoya Takano},
  title = {A 50 Gbps 49 mW CMOS Analog Multiplexer for a DAC Bandwidth Tripler},
  booktitle = {2022 IEEE Radio and Wireless Symposium (RWS)},
  year = 2022,
}

@inproceedings{CTT100934146,
  author = {Keisuke Kawahara and Keisuke Kawahara and Yohtaro Umeda and Kyoya Takano},
  title = {A Broadband Active Balun with Inductor-Less Active Peaking and Imbalance Correction},
  booktitle = {2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)},
  year = 2021,
}

@inproceedings{CTT100934147,
  author = {Keisuke Kawahara and Keisuke Kawahara and Yohtaro Umeda and Kyoya Takano},
  title = {Design of an Area-Efficient Differential Distributed Amplifier Based on the Theory of Differential Transmission Lines},
  booktitle = {2021 IEEE International Symposium on Circuits and Systems (ISCAS)},
  year = 2021,
}

@inproceedings{CTT100934148,
  author = {Keisuke Kawahara and Keisuke Kawahara and Yohtaro Umeda and Kyoya Takano},
  title = {40 Gbps 180 nm CMOS Modulator Driver Using Loss Compensation Gain Cells},
  booktitle = {2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)},
  year = 2020,
}