Adaptive chromatic dispersion compensation for coherent communication systems using delay-tap sampling technique

  • Wang D
  • Lu C
  • Lau A
 et al. 
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Abstract

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.

Author-supplied keywords

  • Chromatic dispersion (CD) compensation
  • coherent detection
  • delay-tap sampling
  • digital signal processing (DSP)

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Authors

  • Dawei Wang

  • Chao Lu

  • Alan Pak Tao Lau

  • Sailing He

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