8×506-Gb/s 16QAM WDM Signal Coherent Transmission over 6000-km Enabled by PS and HB-CDM. - Jianjun Yu; Kaihui Wang; Junwen Zhang; Benyuan Zhu; Steve Dzioba; Xinying Li; Hung-Chang Chien; Xin Xiao 004; Yi Cai 002; Jianyang Shi; Yuefei Chen; Shiping Shi; et al. (OFC, 2018)