200-GHz spacing, 8ch, high-speed wavelength selective arrayed-waveguide grating using buried PLZT waveguides. - Hideaki Asakura; Keiichi Nashimoto; David Kudzuma; Masahiko Hashimoto; Hiroyuki Tsuda (IEICE Electron. Express, 2012)

Small-sized Mach-Zehnder interferometer optical switch using thin film Ge2Sb2Te5 phase-change material. - Takumi Moriyama; Hitoshi Kawashima; Masashi Kuwahara; Xiaomin Wang; Hideaki Asakura; Hiroyuki Tsuda (OFC, 2014)

Design and characterization of an arrayed-waveguide grating router with an interleave-chirped array. - Hideaki Asakura; Hiroyuki Tsuda (IEICE Electron. Express, 2015)

Evaluation of the phase error in Si-wire arrayed-waveguide gratings fabricated by ArF-immersion photolithography. - Kyosuke Muramatsu; Hideaki Asakura; Keijiro Suzuki; Ken Tanizawa; Munehiro Toyama; Minoru Ohtsuka; Nobuyuki Yokoyama; Kazuyuki Matsumaro; Miyoshi Seki; Keiji Koshino; Kazuhiro Ikeda; Shu Namiki; et al. (IEICE Electron. Express, 2015)

Amplitude trimming of Si waveguides using phase change material. - Ryutaro Eguchi; Hideaki Asakura; Yasuro Shimazaki; Takumi Moriyama; Ghanshyam Singh; Hiroyuki Tsuda (IEICE Electron. Express, 2016)

Uncooled Operation of 53-Gbaud PAM4 (106-Gb/s) EA/DFB Lasers with Extremely Low Drive Voltage with 0.9 Vpp. - Yoshihiro Nakai; Akira Nakanishi; Yoriyoshi Yamaguchi; Syunya Yamauchi; Atsushi Nakamura; Hideaki Asakura; Hayato Takita; Shigenori Hayakawa; Masatoshi Mitaki; Yasushi Sakuma; Kazuhiro Naoe (ECOC, 2018)

Silicon photonics based 1 × 2 wavelength selective switch using fold-back arrayed-waveguide gratings. - Fumi Nakamura; Hideaki Asakura; Keijiro Suzuki; Ken Tanizawa; Minoru Ohtsuka; Nobuyuki Yokoyama; Kazuyuki Matsumaro; Miyoshi Seki; Keiji Koshino; Kazuhiro Ikeda; Shu Namiki; Hitoshi Kawashima; et al. (IEICE Electron. Express, 2018)

Wide-temperature-range 100-Gbaud Operation of a Lumped-electrode-type EA-DFB for an 800-Gb/s Optical Transceiver. - Koichiro Adachi; Syunya Yamauchi; Hideaki Asakura; Atsushi Nakamura; Kazuhiko Naoe; Shigehisa Tanak (ECOC, 2020)

Uncooled Operation of 53-Gbaud PAM4 EA-DFB Lasers in the Wavelength Range of 1510-1570 nm for 800-GbE Applications. - Yoshihiro Nakai; Shigenori Hayakawa; Syunya Yamauchi; Yoriyoshi Yamaguchi; Tetsuyoshi Takamure; Hideaki Asakura; Ryosuke Nakajima; Shigetaka Hamada; Kazuhiko Naoe (OFC, 2020)

224-Gb/s PAM4 Uncooled Operation of Lumped-electrode EA-DFB Lasers with 2-km Transmission for 800GbE Application. - Syunya Yamauchi; Koichiro Adachi; Hideaki Asakura; Hayato Takita; Yoshihiro Nakai; Yoriyoshi Yamaguchi; Masatoshi Mitaki; Ryosuke Nakajima; Shigehisa Tanaka; Kazuhiko Naoe (OFC, 2021)

384-Gb/s/lane PAM8 Operation Using 76-GHz Bandwidth EA-DFB Laser at 50°C with 1.0-Vpp Swing over 2-km Transmission. - Hideaki Asakura; Kazuki Nishimura; Syunya Yamauchi; Koichiro Iwamoto; Yoshihiro Nakai; Yoriyoshi Yamaguchi; Kentaro Tani; Ryosuke Nakajima; Kazuhiko Naoe (OFC, 2022)

225-Gb/s PAM4 Operation Using Lumped-Electrode-Type EA-DFB Laser for 5- and 10-km Transmission with Low TDECQ. - Kazuki Nishimura; Hideaki Asakura; Syunya Yamauchi; Takanori Suzuki; Yoshihiro Nakai; Yoriyoshi Yamaguchi; Takeo Kageyama; Masatoshi Mitaki; Yuma Endo; Kazuhiko Naoe (OFC, 2023)