Beyond 6.4-Tb/s PAM4/PS-PAM8 MDM-WDM Transmission with Degenerate-Mode-Diversity Receiver over Weakly-Coupled FMF and Low-Crosstalk Mode MUX/DEMUX

We first propose a high-speed mode group IM-DD transmission system with a degenerate-mode-diversity receiver over weakly-coupled multiple-ring-core FMF and low-crosstalk mode MUX/DEMUX, based on which a record 224-Gb/s per lane and beyond 6.4-Tb/s PAM4/PS-PAM8 MDM-WDM transmission is experimentally demonstrated for optical interconnections.