A Highly Efficient Optical Add-Drop Multiplexer Using Photonic Band Gap with Hexagonal Hole Lattice Photonic Crystal Slab Waveguides. - Akiko Gomyo; Jun Ushida; Tao Chu; Hirohito Yamada; Satomi Ishida; Yasuhiko Arakawa (IEICE Trans. Electron., 2007)

LSI On-Chip Optical Interconnection with Si Nano-Photonics. - Junichi Fujikata; Kenichi Nishi; Akiko Gomyo; Jun Ushida; Tsutomu Ishi; Hiroaki Yukawa; Daisuke Okamoto; Masafumi Nakada; Takanori Shimizu; Masao Kinoshita; Koichi Nose; Masayuki Mizuno; et al. (IEICE Trans. Electron., 2008)

On-Chip Optical Interconnect. - Keishi Ohashi; Kenichi Nishi; Takanori Shimizu; Masafumi Nakada; Junichi Fujikata; Jun Ushida; Sunao Torii; Koichi Nose; Masayuki Mizuno; Hiroaki Yukawa; Masao Kinoshita; Nobuo Suzuki; et al. (Proc. IEEE, 2009)

High-efficiency folded shallow-grating coupler with minimal back reflection toward isolator-free optical integration. - Masatoshi Tokushima; Jun Ushida; Toshinori Uemura; Kazuhiko Kurata (ECOC, 2015)

5 mW/Gbps hybrid-integrated Si-photonics-based optical I/O cores and their 25-Gbps/ch error-free operation with over 300-m MMF. - Kenichiro Yashiki; Yasuyuki Suzuki; Yasuhiko Hagihara; Mitsuru Kurihara; Masatoshi Tokushima; Junichi Fujikata; Akio Ukita; Koichi Takemura; Takanori Shimizu; Daisuke Okamoto; Jun Ushida; Shigeki Takahashi; et al. (OFC, 2015)

25-Gbps error-free operation of chip-scale Si-photonics optical transmitter over 70°C with integrated quantum dot laser. - Kenichiro Yashiki; Kenji Mizutani; Jun Ushida; Yasuyuki Suzuki; Mitsuru Kurihara; Masatoshi Tokushima; Junichi Fujikata; Yasuhiko Hagihara; Kazuhiko Kurata (OFC, 2016)

Resonant Wavelength Variation Modelling for Microring Resonators based on Fabrication Deviation Analysis. - Tsuyoshi Horikawa; Daisuke Shimura; Hiroyuki Takahashi; Jun Ushida; Yohei Sobu; Akemi Shiina; Masatoshi Tokushima; Seok-Hwan Jeong; Keizo Kinoshita; Tohru Mogami (ECOC, 2017)

Fingertip-Size Optical Module, "Optical I/O Core", and Its Application in FPGA. - Takahiro Nakamura; Kenichiro Yashiki; Kenji Mizutani; Takaaki Nedachi; Junichi Fujikata; Masatoshi Tokushima; Jun Ushida; Masataka Noguchi; Daisuke Okamoto; Yasuyuki Suzuki; Takanori Shimizu; Koichi Takemura; et al. (IEICE Trans. Electron., 2019)

A Compact Monitoring Circuit to Accurately Extract Fabrication Deviation in Silicon Waveguides. - Tsuyoshi Horikawa; Hideaki Okayama; Yosuke Onawa; Daisuke Shimura; Jun Ushida; Akemi Shiina; Tadashi Murao; Hiroki Yaegashi (ECOC, 2020)