title: Analyzing the benefit of optical transmission systems based on Root Raised Cosine PS-QPSK and a flexible channel grid.
abstract: We numerically investigate the multi-channel transmission performance of Polarization Switched Quadrature Phase Shift Keying (PS-QPSK) and we compare it to the performance of Polarization-Division-Multiplexed QPSK (PDM-QPSK), using Root Raised Cosine (RRC) spectral shaping, in the context of a flexible channel grid. We point out the impact of the roll-off factor and the potential influence of different dispersion compensation scenarios. Finally, the advantage of PS-QPSK against PDM-QPSK is presented as a function of the system parameters, while we also discuss the benefit of a RRC spectral shaping against a tight filtering at the transmitter side with a 2nd order super-Gaussian-shaped filter.
authors.affiliation: Institut Mines-Télécom/Télécom SudParis, CNRS UMR 5157 SAMOVAR, 9 rue Charles Fourier, 91011 EVRY, France.
authors.forename: A
authors.initials: A
authors.lastname: Seck
authors.forename: P
authors.initials: P
authors.lastname: Ramantanis
authors.forename: J
authors.initials: J
authors.lastname: Vuong
authors.forename: D F
authors.initials: DF
authors.lastname: Bendimerad
authors.forename: C
authors.initials: C
authors.lastname: Lepers
authors.forename: B-E
authors.initials: BE
authors.lastname: Benkelfat
authors.forename: Y
authors.initials: Y
authors.lastname: Frignac
mesh_terms: D003195:Computer Communication Networks / Q000295:instrumentation*; D003198:Computer Simulation; D017076:Computer-Aided Design; D015233:Models, Statistical; D055096:Optical Devices; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*