Koki Sugiyama

Polarization diversity circuit based on silica waveguides and photonic crystal waveplates for a 4×4 silicon optical switch

Hiroyuki Tsuda, Ken Tanizawa, Keijiro Suzuki, 2017, IEICE Electron. Express.

Polarization diversity circuit for a silicon optical switch using silica waveguides integrated with photonic crystal thin film waveplates

Hiroshi Takahashi, Takafumi Chiba, Hiroyuki Tsuda, 2016, SPIE OPTO.

Polarization Diversity Circuit Using Photonic Crystal Waveplates for 1.2-μm Quantum Dot Semiconductor Optical Amplifiers

Hiroyuki Tsuda, Yudai Okuno, Katsumi Yoshizawa, 2018, 2018 Photonics in Switching and Computing (PSC).

Control Method for Output Speed during Velocity Ratio Change under High Rotational Speed Using an Uninterrupted Transmission System

Masaharu Komori, Jungchul Kang, Shuai Zhang, 2012 .

Device of secondary lining construction in shield construction (Reinforced concrete structure)

Yuichi Miyamoto, Koki Sugiyama, Toshio Komori, 2020 .

Phase Equilibrium Measurements of Fluid Mixtures at High Pressures

Daisuke Kodama, Koki Sugiyama, Masahiro Kato, 2006 .