112.8-Gb/s PM-RZ-64QAM optical signal generation and transmission on a 12.5GHz WDM grid

By employing a novel scheme we have generated 112.8-Gb/s polarization-multiplexed (PM)-RZ-64QAM optical signal. Transmission of 112.8-Gb/s PM-RZ-64QAM optical signal over 2×40km of SSMF has been demonstrated in an 8-channel WDM environment on a 12.5GHz grid.