Analyzing the benefit of optical transmission systems based on Root Raised Cosine PS-QPSK and a flexible channel grid

Aida Seck (1, 2) , Petros Ramantanis (1, 2) , Jordi Vuong (1, 2) , Djalal Falih Bendimerad (1, 2) , Catherine Lepers (1, 2) , Badr-Eddine Benkelfat (1, 2) , Yann Frignac (1, 2)

1 SAMOVAR - Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux
2 CNRS - Centre National de la Recherche Scientifique

We numerically investigate the multi-channel transmission performance of Polarization Switched Quadrature Phase Shift Keying (PSQPSK) 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.

Mots clés: Coherent communications; Fiber optics communications

Domaines: Optique / photonique

Aida Seck, Petros Ramantanis, Jordi Vuong, Djalal Falih Bendimerad, Catherine Lepers, et al.. Analyzing the benefit of optical transmission systems based on Root Raised Cosine PS-QPSK and a flexible channel grid. Optics Express, 2013, 21, pp.10496-10501. ⟨hal-00920916⟩