title: Influence of polarization state, baud rate and PMD on non-linear impairments in WDM systems with mixed PM (D)QPSK and OOK channels.
abstract: In this paper we numerically investigate nonlinear impairments in a WDM system with mixed PM (D)QPSK and OOK channels. First we analyze the dependence of XPM and XPolM on SOP and baud rate in absence of PMD. In this case we find that the nonlinear impairments are highly dependent on relative SOP between the PM (D)QPSK and neighbouring OOK channels. The dependence on relative SOP is more pronounced in differential detection than in coherent detection. However, with increasing values of PMD this dependence decreases, and non-linear tolerance improves.
authors.affiliation: Photonic Systems Group, Tyndall National Institute and Department of EE /Physics, UCC, Cork, Ireland. mohsan.niaz@acreo.se
authors.forename: Mohsan Niaz
authors.initials: MN
authors.lastname: Chughtai
authors.forename: Marco
authors.initials: M
authors.lastname: Forzati
authors.forename: Jonas
authors.initials: J
authors.lastname: Mårtensson
authors.forename: Danish
authors.initials: D
authors.lastname: Rafique
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D055096:Optical Devices; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*