All-fiber mode division multiplexer optimized for C-band. - Kyung Jun Park; Kwang Yong Song; Young Kie Kim; Byoung Yoon Kim (OFC, 2014)

All-fiber-based selective mode multiplexer and demultiplexer for six-mode multiplexed signals. - Koji Igarashi; Kyung Jun Park; Daiki Soma; Yuta Wakayama; Takehiro Tsuritani; Byoung Yoon Kim (OFC, 2016)

Low-loss and Low-crosstalk All-fiber-based Six-mode Multiplexer and Demultiplexer for Mode-Multiplexed QAM Signals in C-band. - Koji Igarashi; Yuta Wakayama; Daiki Soma; Takehiro Tsuritani; Itsuro Morita; Kyung Jun Park; Jaekwon Ko; Byoung Yoon Kim (OFC, 2018)