Degenerate modes multiplexer/demultiplexer using Mach-Zehnder interferometer with image inversion. - Daiki Soma; Koki Takeshima; Koji Igarashi; Takehiro Tsuritani (ECOC, 2014)

2.05 Peta-bit/s super-nyquist-WDM SDM transmission using 9.8-km 6-mode 19-core fiber in full C band. - Daiki Soma; Koji Igarashi; Yuta Wakayama; Koki Takeshima; Yu Kawaguchi; Noboru Yoshikane; Takehiro Tsuritani; Itsuro Morita; Masatoshi Suzuki (ECOC, 2015)

114 space-division-multiplexed transmission over 9.8-km weakly-coupled-6-mode uncoupled-19-core fibers. - Koji Igarashi; Daiki Soma; Yuta Wakayama; Koki Takeshima; Yu Kawaguchi; Takehiro Tsuritani; Itsuro Morita; Masatoshi Suzuki (OFC, 2015)

51.1-Tbit/s MCF transmission over 2, 520 km using cladding pumped 7-core EDFAs. - Koki Takeshima; Takehiro Tsuritani; Yukihiro Tsuchida; Koichi Maeda; Tsunetoshi Saito; Kengo Watanabe; Toru Sasa; Katsunori Imamura; Ryuichi Sugizaki; Koji Igarashi; Itsuro Morita; Masatoshi Suzuki (OFC, 2015)

Ultra-dense space division multiplexing technologies towards multi-Peta bit/s optical transmission. - Masatoshi Suzuki; Daiki Soma; Koji Igarashi; Yuta Wakayama; Koki Takeshima; Yu Kawaguchi; Noboru Yoshikane; Takehiro Tsuritani; Itsuro Morita (ICTON, 2016)