An Atomistic Study on Hydrogenation Effects toward Quality Improvement of Program/Erase Cycle of MONOS-Type Memory. - Akira Otake; Keita Yamaguchi; Katsumasa Kamiya; Yasuteru Shigeta; Kenji Shiraishi (IEICE Trans. Electron., 2011)

Ultra-high port count wavelength selective switch employing waveguide-based I/O frontend. - Kenya Suzuki; Yuichiro Ikuma; Etsu Hashimoto; Keita Yamaguchi; Mikitaka Itoh; Tetsuo Takahashi (OFC, 2015)

In-band OSNR monitors comprising programmable delay line interferometer integrated with wavelength selective switch by spatial and planar optical circuit. - Mitsumasa Nakajima; Naru Nemoto; Keita Yamaguchi; Joji Yamaguchi; Kenya Suzuki; Toshikazu Hashimoto (OFC, 2016)

First Demonstration of Subsystem-Modular Optical Crossconnect Using Single-Module 6×6 WSS. - Ryota Hashimoto; Shuhei Yamaoka; Yojiro Mori; Hiroshi Hasegawa; Ken-ichi Sato; Keita Yamaguchi; Kazunori Seno; Kenya Suzuki (ECOC, 2017)

SDM-compatible dynamic gain equalizer using spatial and planar optical circuit. - Mitsumasa Nakajima; Kenya Suzuki; Keita Yamaguchi; Hirotaka Ono 002; Hiroki Kawahara; Mitsunori Fukutoku; Takayuki Mizuno; Yutaka Miyamoto; Toshikazu Hashimoto (OFC, 2017)

Possibility of Metal-Oxide-Nitride-Oxide-Semiconductor Memories for Long Lifespan Archive Memories. - Hiroki Shirakawa; Keita Yamaguchi; Masaaki Araidai; Katsumasa Kamiya; Kenji Shiraishi (IEICE Trans. Electron., 2017)

Wide-Passband C+L-Band Wavelength Selective Switch by Alternating Wave-Band Arrangement on LCOS. - Kazunori Seno; Keita Yamaguchi; Kenya Suzuki; Toshikazu Hashimoto (ECOC, 2018)

Integrated Wavelength Selective Switch Array for Space Division Multiplexed Network with Ultra-Low Inter-Spatial Channel Crosstalk. - Keita Yamaguchi; Kazunori Seno; Kenya Suzuki; Hiroki Kawahara; Mitsunori Fukutoku; Toshikazu Hashimoto; Yutaka Miyamoto (OFC, 2018)

Atomistic study of SiN based ReRAM with high program/erase cycle endurance. - Keita Yamaguchi; Hiroki Shirakawa; Kenji Shiraishi (IEICE Electron. Express, 2018)

6×6 Wavelength Cross Connect with 2-f and 4-f Optical Systems for SDM Photonic Nodes. - Kazunori Serio; Akira Isoda; Takayuki Mizuno; Keita Yamaguchi; Kenya Suzuki; Toshikazu Hashimoto; Yutaka Miyamoto (OECC/PSC, 2019)

Compact Silica-based 16 × 16 Multicast Switch with Surface Mount Technology for PLCs. - Ai Yanagihara; Keita Yamaguchi; Takashi Goh; Kenya Suzuki (OECC/PSC, 2019)

Surface Mount Technology for Silica-Based Planar Lightwave Circuit and Its Application to Compact 16×16 Multicast Switch. - Ai Yanagihara; Keita Yamaguchi; Takashi Goh; Kenya Suzuki (IEICE Trans. Electron., 2020)

Resolution Improvement In FZA Lens-Less Camera By Synthesizing Images Captured With Different Mask-Sensor Distances. - Xiao Chen; Tomoya Nakamura; Xiuxi Pan; Kazuyuki Tajima; Keita Yamaguchi; Takeshi Shimano; Masahiro Yamaguchi (ICIP, 2021)

Multiband Optical Switch Technology. - Takashi Goh; Keita Yamaguchi; Ai Yanagihara (OFC, 2022)

Highly rectangular SCL-band MUX/DEMUX filter using compact cascaded arrayed waveguide gratings. - Masashi Ota; Kenya Suzuki; Keita Yamaguchi; Takeshi Umeki; Satomi Katayose; Osamu Moriwaki (OFC, 2024)

Double-decker CDC-ROADM node for multi-band network with wavelength band granularity. - Kenya Suzuki; Masashi Ota; Yoshie Morimoto; Keita Yamaguchi; Fukutaro Hamaoka; Shuto Sugawara; Takeo Sasai; Takayuki Kobayashi; Masanori Nakamura; Satomi Katayose; Takeshi Umeki; Daisuke Ogawa; et al. (OFC, 2024)

Spot-Size-Adjustable Optical Mediator using 3D-Tapered Silica Waveguides for SiPh/SMF Low-Loss Connection. - Masashi Ota; Yoshinori Hibino; Mikihiro Kurosawa; Tomomasa Kiyozawa; Ai Yanagihara; Yoshie Morimoto; Keita Yamaguchi; Kenya Suzuki; Osamu Moriwaki (OFC, 2025)