Elephant coupler: Vertically curved Si waveguide with wide and flat wavelength window insensitive to coupling angle. - Tomoya Yoshida; Emiko Omoda; Yuki Atsumi; M. Mori; Youichi Sakakibara (ECOC, 2015)

Large mode-field-diameter surface optical coupler based on SiO2-capsuled vertically curved Si waveguide. - Yuki Atsumi; Tomoya Yoshida; Emiko Omoda; Youichi Sakakibara (OFC, 2017)

Compact and low-loss liquid crystal loaded Mach-Zehnder optical switch based on Si wire waveguide. - Yuki Atsumi; Tetsuo Miyazaki; Noboru Miura; Masahiko Mori; Youichi Sakakibara (IEICE Electron. Express, 2017)

High-Performance Surface Optical Coupler Based on SiO2-Capped Vertically Curved Si Waveguide. - Yuki Atsumi; Tomoya Yoshida; Emiko Omoda; Youichi Sakakibara (ECOC, 2018)

Characterization of Coupling Properties of Vertically Curved Si Surface Optical Coupler Designed for Coupling with 5-µm-MFD SMF. - Yuki Atsumi; Tomoya Yoshida; Emiko Omoda; Youichi Sakakibara (OFC, 2018)

Three Dimensional Silicon Optical Waveguide Structure Bent by Ion Implantation for Surface Coupling. - Youichi Sakakibara; Yuki Atsumi; Tomoya Yoshida (OFC, 2018)

Orbital Angular Momentum Mux/Demux Module using Vertically Curved Si Waveguides. - Tomohiro Amemiya; Tomoya Yoshida; Yuki Atsumi; Nobuhiko Nishiyama; Yasuyuki Miyamoto; Youichi Sakakibara; Shigehisa Arai (OFC, 2019)

Broadband and Polarization Insensitive Surface Optical Coupler using Vertically Curved Waveguides Fabricated with ArF-Immersion Lithography. - Tomoya Yoshida; Yuki Atsumi; Emiko Omoda; Youichi Sakakibara (OFC, 2019)

Vertically-Curved Si Surface Optical Coupler for Coupling with Standard Single-Mode Optical Fibers. - Yuki Atsumi; Tomoya Yoshida; Emiko Omoda; Youichi Sakakibara (OFC, 2020)

Vertical Optical Fiber Assembly on Silicon Photonic Chips using 3D-Curved Silicon Waveguide Couplers. - Youichi Sakakibara; Tomoaki Kiriyama; Tomoya Yoshida; Yuki Atsumi; Emiko Omoda; Katsuhiro Iwasaki; Takashi Kato (OFC, 2020)

Demonstration of Port-Selective Beam Scanner Incorporating Silicon Vertically Curved Waveguide Antenna Arrays. - Yuki Atsumi; Tomoya Yoshida; Ryosuke Matsumoto; Ryotaro Konoike; Youichi Sakakibara; Takashi Inoue; Keijiro Suzuki (OECC/PSC, 2022)

Free-Space Signal Transmission Using Optical Beam Scanning Device Incorporating Broadband Silicon Surface Optical Couplers. - Yuki Atsumi; Tomoya Yoshida; Ryosuke Matsumoto; Ryotaro Konoike; Youichi Sakakibara; Takashi Inoue; Keijiro Suzuki (OFC, 2023)

Core-to-Core Switching Module for 4-Core MCFs Using Silicon Photonics Matrix Switch Incorporating Silicon Vertically Curved Optical Coupler. - Tomoya Yoshida; Yuki Atsumi; Emiko Omoda; Katsuya Kito; Katsuhiro Iwasaki; Yusuke Kinoshita; Tomoaki Kiriyama; Ryotaro Konoike; Keijiro Suzuki; Ryosuke Matsumoto; Takashi Inoue; Kazuhiro Ikeda; et al. (OFC, 2023)

Broadband Port-Selective Silicon Beam Scanning Device for Free-Space Optical Communication. - Yuki Atsumi; Tomoya Yoshida; Ryosuke Matsumoto; Ryotaro Konoike; Youichi Sakakibara; Takashi Inoue; Keijiro Suzuki (IEICE Trans. Electron., 2023)