Title :
Polarization-Dependent Loss Impact on Coherent Optical Systems in Presence of Fiber Nonlinearity
Author :
Rossi, Nicola ; Serena, Paolo ; Bononi, Alberto
Author_Institution :
Dept. of Inf. Eng., Univ. degli Studi di Parma, Parma, Italy
Abstract :
We investigate the interaction of polarization-dependent loss (PDL) with Kerr nonlinearities by decoupling single- and cross-channel nonlinear distortions in a homogeneous 100-G polarization division multiplexing quadrature phase shift keying (PDM-QPSK) and a hybrid 100-G PDM-QPSK/10-G on/off keying system. Because of the decoupling method, we provide reasons for the interaction, using basic comprehensive examples. Both average Q-factor and its distribution are investigated in both dispersion-managed and dispersion-unmanaged links, showing that realistic PDL values affect outage probabilities notwithstanding a negligible average penalty.
Keywords :
Q-factor; light coherence; nonlinear optics; optical Kerr effect; optical distortion; optical fibre communication; optical fibre couplers; optical fibre dispersion; optical fibre losses; optical fibre polarisation; quadrature phase shift keying; Kerr nonlinearity; average Q-factor distribution; coherent optical systems; decoupling cross-channel nonlinear distortions; decoupling single-channel nonlinear distortions; dispersion-managed links; dispersion-unmanaged links; fiber nonlinearity; homogeneous 100-G PDM-QPSK; hybrid 100-G PDM-QPSK-10-G on-off keying system; outage probabilities; polarization division multiplexing quadrature phase shift keying; polarization-dependent loss impact; Dispersion; Nonlinear distortion; Optical fiber communication; Phase modulation; Q-factor; Wavelength division multiplexing; Polarization-dependent loss (PDL); fiber nonlinear optics; outage probability;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2293595
