Chromatic dispersion and PMD mitigation at 10 Gb/s using Viterbi equalization for DPSK and DQPSK modulation formats

Wei Chen; Fred Buchali; Xingwen Yi; William Shieh; Jamie S Evans; Rodney S Tucker

doi:10.1364/oe.15.005271

Chromatic dispersion and PMD mitigation at 10 Gb/s using Viterbi equalization for DPSK and DQPSK modulation formats

Opt Express. 2007 Apr 30;15(9):5271-6. doi: 10.1364/oe.15.005271.

Authors

Wei Chen, Fred Buchali, Xingwen Yi, William Shieh, Jamie S Evans, Rodney S Tucker

PMID: 19532781
DOI: 10.1364/oe.15.005271

Abstract

We explore the potential of chromatic dispersion and polarization-mode dispersion (PMD) mitigation using Viterbi equalization in 10 Gb/s nonreturn-to-zero differential phase-shift keying (NRZ-DPSK) and differential quadrature phase-shift keying (NRZ-DQPSK) systems. We show through Monte Carlo simulations that using Viterbi equalization improves the performance of NRZ-OOK, NRZ-DPSK and NRZ-DQPSK receivers. For NRZ-DQPSK receiver with a Viterbi equalizer, the chromatic dispersion tolerance is about 5000 ps/nm and the 1st order PMD tolerance is about 160 ps at 3 dB OSNR penalty.