Experimental comparison of 28Gbaud polarization switched-and polarization division multiplexed-QPSK in WDM long-haul transmission system

We report on experimental long-haul transmission of 28Gaud PS-QPSK signal in a WDM scenario. We compare its performance with that of 28Gbaud PDM-QPSK signal and demonstrate it could be interesting into software-defined optical transceivers.