High-efficient InP-based balanced photodiodes integrated with 90° hybrid MMI for compact 100 Gb/s coherent receiver. - Hideki Yagi; Naoko Inoue; Yutaka Onishi; Ryuji Masuyama; Tomokazu Katsuyama; Takehiko Kikuchi; Yoshihiro Yoneda; Hajime Shoji (OFC/NFOEC, 2013)

High receiver responsivity and low dark current of InP-based pin-photodiode array monolithically integrated with 90° hybrid and spot-size converter using selective embedding regrowth. - Hideki Yagi; Naoko Inoue; Takehiko Kikuchi; Ryuji Masuyama; Tomokazu Katsuyama; Yoshihiro Tateiwa; Katsumi Uesaka; Yoshihiro Yoneda; Masaru Takechi; Hajime Shoji (IEICE Electron. Express, 2015)

Highly Reliable and Compact InP-Based In-Phase and Quadrature Modulators for Over 400 Gbit/s Coherent Transmission Systems. - Hajime Tanaka 002; Tsutomu Ishikawa; Takashi Kitamura 002; Masataka Watanabe; Ryuji Yamabi; Ryo Yamaguchi; Naoya Kono; Takehiko Kikuchi; Morihiro Seki; Tomokazu Katsuyama; Mitsuru Ekawa; Hajime Shoji (IEICE Trans. Electron., 2020)