Real-Time 100.4 GBd PCS-64QAM Transmission of a 1.6 Tb/s Super-Channel Over 1600 km of G.654.E Fiber

First demonstration of a real-time 100.4 GBd PCS-64QAM 2 × 800G coherent MODEM. A record transmission distance of 1600 km is achieved for a dual-carrier 1.6 Tb/s channel over a fully loaded commercial line system, with an OSNR margin in excess of 2 dB to the FEC threshold.