title: Chromatic dispersion and PMD mitigation at 10 Gb/s using Viterbi equalization for DPSK and DQPSK modulation formats.
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.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Fred
authors.initials: F
authors.lastname: Buchali
authors.forename: Xingwen
authors.initials: X
authors.lastname: Yi
authors.forename: William
authors.initials: W
authors.lastname: Shieh
authors.forename: Jamie S
authors.initials: JS
authors.lastname: Evans
authors.forename: Rodney S
authors.initials: RS
authors.lastname: Tucker