High Linearity and Uniform Characteristics of InP-Based 8-CH Waveguide Avalanche Photodiode Array for 400 GbE. - Takuya Okimoto; Ken Ashizawa; Koji Ebihara; Satoru Okamoto; Takumi Endo; Kazuhiko Horino; Tatsuya Takeuchi; Toru Uchida; Hideki Yagi; Yoshihiro Yoneda (OFC, 2020)

InP-based PIC integrated with Butt-joint Coupled Waveguide p-i-n PDs for 100GBaud Coherent Networks. - Takuya Okimoto; Hideki Yagi; Koji Ebihara; Kouichiro Yamazaki; Satoru Okamoto; Yusuke Ohkura; Kazuhiko Horino; Ken Ashizawa; Mitsuru Ekawa; Yoshihiro Yoneda (OFC, 2021)

106-Gb/s Waveguide AlInAs/GaInAs Avalanche Photodiode with Butt-joint Coupling Structure. - Takuya Okimoto; Ken Ashizawa; Hiroki Mori; Koji Ebihara; Kouichiro Yamazaki; Satoru Okamoto; Kazuhiko Horino; Yusuke Ohkura; Hideki Yagi; Mitsuru Ekawa; Yoshihiro Yoneda (OFC, 2022)

80-GHz Bandwidth and High Responsivity of InP Coherent Receiver PIC with Butt-joint waveguide PDs. - Takuya Okimoto; Hideki Yagi; Ken Ashizawa; Kouichiro Yamazaki; Koji Ebihara; Satoru Okamoto; Kazuhiko Horino; Munetaka Kurokawa; Yoshiyuki Sugimoto; Seiji Kumagai; Keiji Tanaka; Masaru Takechi; et al. (OFC, 2023)