@article{CTT100873624,
  author = {Takehiko Kikuchi and Takuo Hiratani and Naoki Fujiwara and Naoko Inoue and Toshiyuki Nitta and Moataz Eissa and Takuya Mitarai and Yuning Wang and Yoshitaka Oiso and Nobuhiko Nishiyama and Hideki Yagi},
  title = {III–V gain region/Si waveguide hybrid lasers with InP-based two-storied ridge structure by direct bonding technology},
  journal = {Japanese Journal of Applied Physics},
  year = 2022,
}

@inproceedings{CTT100873520,
  author = {Yutaka Makihara and Nobuhiko Nishiyama and Takehiko Kikuchi and Takuo Hiratani and Naoki Fujiwara and Naoko Inoue and Toshiyuki Nitta and Moataz Eissa and Takuya Mitarai and Yuning Wang and Yoshitaka Oiso and Tomohiro Amemiya and Hideki Yagi},
  title = {Characteristics of GaInAsP/SOI Hybrid Semiconductor Optical Amplifier with InP-based Two-storied Ridge Structure},
  booktitle = {},
  year = 2022,
}