180-GBaud All-ETDM Single-Carrier Polarization Multiplexed QPSK Transmission over 4480 km
11 March 2018
We demonstrate PDM-QPSK transmission over 4480 km at a record all-electronically multiplexed symbol rate of 180 GBaud, providing a line rate of 720 Gb/s on a single optical carrier enabled by high-speed InP-DHBT selectors.