Electrical Joint Equalization for PMD-Induced Performance Degradation in Direct-Detection Polarization-Multiplexed Transmission Systems

Author

Li, Juhao ; Zhang, Linhua ; Zhang, Dechao ; Zhang, Fan ; Chen, Zhangyuan

Author_Institution

State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing

Volume

20

Issue

16

fYear

2008

Firstpage

1357

Lastpage

1359

Abstract

Polarization-division-multiplexed (PDM) systems are sensitive to polarization-mode dispersion (PMD), since PMD induces not only intersymbol distortion but also interchannel crosstalk. Electrical equalization for individual channels is not sufficient for the lack of information from another channel. In this letter, electrical joint equalization including both the decision-feedback equalizer and Viterbi equalizer for PMD compensation in direct-detection PDM systems is investigated. Simulation shows that joint equalizers can effectively combat PMD-induced performance degradation and lower the requirement for dynamic polarization control.

Keywords

channel estimation; decision feedback equalisers; multiplexing; optical communication; optical fibre polarisation; PMD compensation; Viterbi equalizer; decision-feedback equalizer; dynamic polarization control; electrical joint equalization; performance degradation; polarization-division-multiplexed systems; polarization-mode dispersion; polarization-multiplexed transmission systems; Crosstalk; Decision feedback equalizers; Degradation; Optical distortion; Optical fiber communication; Optical fiber polarization; Optical receivers; Optical signal processing; Polarization mode dispersion; Viterbi algorithm; Electronic equalization; maximum-likelihood sequence estimation; optical fiber communication; polarization- multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.926113

Filename

4579319