Effect of Post-Growth Annealing on Morphology of Ge Mesa Selectively Grown on Si. - Sungbong Park; Yasuhiko Ishikawa; Tai Tsuchizawa; Toshifumi Watanabe; Koji Yamada; Seiichi Itabashi; Kazumi Wada (IEICE Trans. Electron., 2008)

Si Photonics and Fiber to the Home. - Kazumi Wada; Sungbong Park; Yasuhiko Ishikawa (Proc. IEEE, 2009)

22-Gbit/s × 16-ch WDM receiver based on a Si-Ge-silica monolithic photonic platform and its application to 40-km transmission. - Hidetaka Nishi; Rai Kou; Tatsurou Hiraki; Tai Tsuchizawa; Hiroshi Fukuda; Yasuhiko Ishikawa; Kazumi Wada; Koji Yamada (OFC/NFOEC, 2013)

Monolithic integration of Si-silica waveguide delay line interferometer and germanium photodetectors for 25-Gbit/s DPSK demodulator. - Tatsurou Hiraki; Hiroshi Fukuda; Tai Tsuchizawa; Rai Kou; Hidetaka Nishi; Kotaro Takeda; Tsuyoshi Yamamoto; Yasuhiko Ishikawa; Kazumi Wada; Koji Yamada (OFC, 2014)

Ge-on-Si photonic devices for photonic-electronic integration on a Si platform. - Yasuhiko Ishikawa; Shinichi Saito (IEICE Electron. Express, 2014)

Ge Epitaxial Layers on Si for Group-IV Integrated Photonics. - Yasuhiko Ishikawa (OECC/PSC, 2019)

High-Speed and 16 λ-WDM Operation of Ge/Si Electro-Absorption Modulator for C-Band Spectral Regime. - Junichi Fujikata; Masataka Noguchi; Seok-Hwan Jeong; Yosuke Onawa; Daisuke Shimura; Kazuki Kawashita; Riku Katamawari; Hideaki Okayama; Shigeki Takahashi; Hideki Ono; Hiroyuki Takahashi; Hiroki Yaegashi; et al. (OFC, 2020)

Feasibility of Plasmonic Circuits in Nanophotonics. - Mitsuo Fukuda; Shinya Okahisa; Yuta Tonooka; Masashi Ota; Takuma Aihara; Yasuhiko Ishikawa (IEEE Access, 2020)

High Performance Si Photonics Devices and InP/EO Polymer Hybrid Optical Modulator for Data Communication and Computing. - Junichi Fujikata; Masataka Noguchi; Tomoki Sakuma; Daisuke Okamoto; Yasuhiko Ishikawa; Shiyoshi Yokoyama (OECC/PSC, 2022)

Reduced Peripheral Leakage Current in Pin Photodetectors of Ge on n+-Si by P+ Implantation to Compensate Surface Holes. - Koji Abe; Mikiya Kuzutani; Satoki Furuya; Jose A. Piedra-Lorenzana; Takeshi Hizawa; Yasuhiko Ishikawa (IEICE Trans. Electron., 2024)