Spectral engineering technique to mitigate 37.5-GHz filter-cascade penalty with real-time 32-GBaud PDM-16QAM

Abstract

We investigate the potential of spectral engineering to mitigate the penalties on 32-Gbaud 256-Gb/s PDM-16QAM channels passing through the deployed cascade of 37.5-GHz wide filters in case of wavelength detuning and real-time coherent detection.