A self-learning digital neural network using wafer-scale LSI. - Moritoshi Yasunaga; Noboru Masuda; Masayoshi Yagyu; Mitsuo Asai; Katsunari Shibata; Mitsuo Ooyama; Minoru Yamada; Takahiro Sakaguchi; Masashi Hashimoto (IEEE J. Solid State Circuits, 1993)

Sub-harmonic mode-locking of VCSEL with a concave external mirror. - Tomoyuki Kato; Akihiro Matsutani; Takahiro Sakaguchi; Kohroh Kobayashi (IEICE Electron. Express, 2008)

Full C-Band Wavelength Demultiplexer with Optical Gain for Use in Wavelength Selective Switch. - Ryosuke Togashi; Xiaodong Gu 003; Takahiro Sakaguchi; Fumio Koyama (OFC, 2019)