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Adaptive Chromatic Dispersion Compensation for Coherent Communication Systems Using Delay-Tap Sampling Technique

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4 Author(s)
Dawei Wang ; Dept. of Opt. Eng., Zhejiang Univ., Hangzhou, China ; Chao Lu ; Lau, A.P.T. ; Sailing He

A fast and low-complexity adaptive chromatic dispersion (CD) compensation algorithm based on delay-tap sampling technique for optical coherent systems is proposed. By generating a delay-tap plot from the signal powers after an adaptive CD equalizer, a parameter can be extracted from the delay-tap plot which can be used to estimate CD accurately. Simulation results for coherent polarization-division-multiplexed (PDM) quaternary phase-shift keying (QPSK) as well as 16-quadrature amplitude modulation (QAM) systems with various pulse shapes demonstrate that high CD estimation accuracies using relatively few data symbols can be achieved in presence of other transmission impairments.

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 14 )

Date of Publication:

July15, 2011

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