Title :
Interchannel Nonlinearities in Coherent Polarization-Division-Multiplexed Quadrature-Phase-Shift- Keying Systems
Author_Institution :
Bell Labs., Alcatel-Lucent, Holmdel, NJ
fDate :
3/1/2009 12:00:00 AM
Abstract :
We study with simulations interchannel nonlinear effects on a 42.8-Gb/s coherent polarization-division-multiplexed quadrature-phase-shift-keying (PDM-QPSK) system with and without dispersion management. We find that interchannel cross-phase-modulation induced nonlinear polarization scattering can severely degrade the performance of a dispersion-managed PDM-QPSK system. We demonstrate that the time-interleaved return-to-zero PDM-QPSK, where the symbols of the two polarizations are shifted by half a symbol in time, can significantly suppress the nonlinear polarization scattering in dispersion managed systems, and make systems with inline dispersion-compensation fiber (DCF) achieve better performance than those without DCF.
Keywords :
multiplexing; nonlinear optics; optical fibre communication; optical fibre dispersion; optical fibre polarisation; optical modulation; phase modulation; quadrature phase shift keying; telecommunication channels; bit rate 42.8 Gbit/s; dispersion-managed PDM-QPSK system; inline dispersion-compensation fiber; interchannel cross-phase-modulation; interchannel nonlinear effects; nonlinear polarization scattering supression; polarization-division-multiplexing system; quadrature-phase-shift- keying system; time-interleaved return-to-zero PDM-QPSK; Coherent detection; interchannel nonlinearities; nonlinear polarization scattering; optical fiber communication; polarization-division multiplexing; polarization-division-multiplexed quadrature phase-shift keying (PDM-QPSK); quadrature phase-shift keying;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2010714
