Experimental comparison of 28Gbaud Polarization Switched and Polarization Division Multiplexed QPSK in WDM Long-Haul Transmission System

We report on experimental transmission of 28Gaud single-carrier PS-QPSK signal. We compare its performance with that of 28Gbaud PDM-QPSK signal and demonstrate its potential of as a fall-back solution to PDM-QPSK in software-defined optical transceivers. OCIS codes: (060.2360) Fiber optics links and subsystems; (060.4080) Modulation; (060.4510) Optical communications.]