Compensation of nonlinear fibre impairments in coherent systems employing spectrally efficient modulation formats

Danish Rafique, Jian A. Zhao, Andrew D. Ellis

Research output: Contribution to journalArticlepeer-review

Abstract

We investigate electronic mitigation of linear and non-linear fibre impairments and compare various digital signal processing techniques, including electronic dispersion compensation (EDC), single-channel back-propagation (SC-BP) and back-propagation with multiple channel processing (MC-BP) in a nine-channel 112 Gb/s PM-mQAM (m=4,16) WDM system, for reaches up to 6,320 km. We show that, for a sufficiently high local dispersion, SC-BP is sufficient to provide a significant performance enhancement when compared to EDC, and is adequate to achieve BER below FEC threshold. For these conditions we report that a sampling rate of two samples per symbol is sufficient for practical SC-BP, without significant penalties.
Original languageEnglish
Pages (from-to)1815-1822
Number of pages8
JournalIEICE Transactions on Communications
VolumeE94-B
Issue number7
Publication statusPublished - 1 Jul 2011

Bibliographical note

Copyright ©2008 IEICE
Rafique, D., Zhao, J. A., & Ellis, A. D. (2011). Compensation of nonlinear fibre impairments in coherent systems employing spectrally efficient modulation formats. IEICE transactions on communications, E94-B(7), 1815-1822.

Keywords

  • optical fibre communication
  • coherent communication
  • digital signal processing
  • nonlinear optics

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