Interchannel Nonlinearities in Coherent Polarization-Division-Multiplexed Quadrature-Phase-Shift- Keying Systems

Author

Xie, Chongjin

Author_Institution

Bell Labs., Alcatel-Lucent, Holmdel, NJ

Volume

21

Issue

5

fYear

2009

fDate

3/1/2009 12:00:00 AM

Firstpage

274

Lastpage

276

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.2010714

Filename

4738366