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 Scott Evans, Rodney Stuart Tucker

Research output: Contribution to journalArticleResearchpeer-review

31 Citations (Scopus)


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 1(st) order PMD tolerance is about 160 ps at 3 dB OSNR penalty.
Original languageEnglish
Pages (from-to)5271 - 5276
Number of pages6
JournalOptics Express
Issue number9
Publication statusPublished - 2007
Externally publishedYes

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