112-Gb/s polarization-multiplexed 16-QAM on a 25-GHz WDM grid

Abstract
We demonstrate intradyne detection of 112-Gb/s 16-QAM (14-Gbaud, polarization-multiplexed) in a 10-channel WDM environment on a 25-GHz grid. We show the robustness of a central channel to multiple add/drop filtering and transmission over 315 km.