Demonstration of 40-Gb/s QPSK upstream transmission in long-reach RSOA-based coherent WDM PON using offset PDM technique. - H. K. Shim; K. Y. Cho; U. H. Hong; Yun Chur Chung (OFC/NFOEC, 2013)

20-Gb/s operation of RSOA using polar return-to-zero 4-PAM modulation format and direct detection. - H. K. Shim; Hoon Kim; Yun Chur Chung (OFC, 2015)

28-Gb/s upstream transmission in RSOA-based WDM PON using polar RZ PAM-N format and direct detection. - H. K. Shim; Hoon Kim; Yun Chur Chung (OFC, 2016)