Compact and low power DP-QPSK modulator module with InP-based modulator and driver ICs. - Naoya Kono; Takamitsu Kitamura; Hideki Yagi; Naoki Itabashi; Taizo Tatsumi; Yasuyuki Yamauchi; Kosuke Fujii; Kazuhiko Horino; Shingo Yamanaka; Keiji Tanaka; Kazuhiro Yamaji; Chie Fukuda; et al. (OFC/NFOEC, 2013)

Fast wavelength switching of fully heater-tuned CSG-DR lasers. - Hiroyuki Matsuura; Toshimitsu Kaneko; Ken Tanizawa; Eiichi Banno; Katsumi Uesaka; Haruhiko Kuwatsuka; Shu Namiki; Hajime Shoji (OFC/NFOEC, 2013)

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)

Hardware efficient QAM16 all-optical carrier recovery using a single optically-stabilized injection-locked semiconductor laser. - Aaron Albores-Mejia; Toshimitsu Kaneko; Eiichi Banno; Katsumi Uesaka; Hajime Shoji; Haruhiko Kuwatsuka (ECOC, 2014)

A compact low-power 224-Gb/s DP-16QAM modulator module with InP-based modulator and linear driver ICs. - Taizo Tatsumi; Naoki Itabashi; Tomoko Ikagawa; Naoya Kono; Morihiro Seki; Keiji Tanaka; Kazuhiro Yamaji; Yasushi Fujimura; Katsumi Uesaka; Takashi Nakabayashi; Hajime Shoji; Shoichi Ogita (OFC, 2014)

Optical-comb-line selection from a low-power/low-OSNR comb using a low-coherence semiconductor laser for flexible ultra-dense short range transceivers. - Aaron Albores-Mejia; Toshimitsu Kaneko; Eiichi Banno; Katsumi Uesaka; Hajime Shoji; Haruhiko Kuwatsuka (OFC, 2015)

Dynamic parametric dispersion compensation using FPGA pump controller and dispersion monitor. - Ken Tanizawa; Hiroyuki Matsuura; Kensuke Ogawa; Toshimitsu Kaneko; Eiichi Banno; Katsumi Uesaka; Shigehiro Takasaka; Hidenori Iwai; Kazuya Ota; Haruhiko Kuwatsuka; Yoichi Oikawa; Takeshi Yagi; et al. (OFC, 2015)

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)

InP-Based Monolithic Integration Technologies for 100/200Gb/s Pluggable Coherent Transceivers. - Hideki Yagi; Yoshihiro Yoneda; Mitsuru Ekawa; Hajime Shoji (IEICE Trans. Electron., 2017)

850/900-nm VCSEL Arrays for 400 Gbit/s BiDi Applications. - Ryosuke Kubota; Takeshi Aoki; Takashi Ishizuka; Masaki Yanagisawa; Hajime Shoji (OECC/PSC, 2019)

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)