Polarization modulated coherent optical communication systems

Abstract

Polarization modulated coherent optical communication systems are interesting for low-phase noise-induced penalty and insensitivity to the fluctuations of the field state of polarization if a suitable tracking is adopted. In this paper, sever kinds of binary and multilevel polarization modulated systems are presented based c Stokes parameters detection. Quantum limit performance is determined and phase noise-induced penalty is evaluated both in the presence of a sample and hold decision device and in case of postdetection filtering.