Integrated loop mirrors for catoptric functional waveguide devices. - Yuichiro Ikuma; Jiro Ito; Hiroyuki Tsuda (IEICE Electron. Express, 2008)

Proposal of a small self-holding 2×2 optical switch using phase-change material. - Yuichiro Ikuma; Toshiharu Saiki; Hiroyuki Tsuda (IEICE Electron. Express, 2008)

Low loss, small crosstalk offset crossing structure for large-scale planar lightwave circuits. - Daiki Tanaka; Yuichiro Ikuma; Hiroyuki Tsuda (IEICE Electron. Express, 2009)

Tunable optical dispersion compensator with a high-resolution arrayed-waveguide grating. - Yuichiro Ikuma; Takayuki Mizuno; Hiroshi Takahashi; Hiroyuki Tsuda (IEICE Electron. Express, 2011)

Optical spectrum control circuit using an arrayed-waveguide grating and tunable phase shifters. - Koichi Kato; Yuichiro Ikuma; Hiroshi Takahashi; Takayuki Mizuno; Hiroyuki Tsuda (IEICE Electron. Express, 2011)

8 × 8 wavelength cross connect with add/drop ports integrated in spatial and planar optical circuit. - Naru Nemoto; Yuichiro Ikuma; Kenya Suzuki; Osamu Moriwaki; Toshio Watanabe; Mikitaka Itoh; Tetsuo Takahashi (ECOC, 2015)

8 × 24 wavelength selective switch for low-loss transponder aggregator. - Yuichiro Ikuma; Kenya Suzuki; Naru Nemoto; Etsu Hashimoto; Osamu Moriwaki; Tetsuo Takahashi (OFC, 2015)

Ultra-high port count wavelength selective switch employing waveguide-based I/O frontend. - Kenya Suzuki; Yuichiro Ikuma; Etsu Hashimoto; Keita Yamaguchi; Mikitaka Itoh; Tetsuo Takahashi (OFC, 2015)

Spatial and planar optical circuit. - Kenya Suzuki; Yuichiro Ikuma (OFC, 2016)

Survey of Photonic Switching Architectures and Technologies in Support of Spatially and Spectrally Flexible Optical Networking [Invited]. - Dan M. Marom; Paul D. Colbourne; Antonio D'Errico; Nicolas K. Fontaine; Yuichiro Ikuma; Roberto Proietti; Liangjia Zong; José Manuel Rivas-Moscoso; Ioannis Tomkos (JOCN, 2017)