Correlated Nonlinear Phase-Noise in Multi-Subcarrier Systems: Modeling and Mitigation

Ori Golani, Dario Pilori, Fernando Pedro Pereira Guiomar, Gabriella Bosco, Andrea Carena, Mark Shtaif

Research output: Contribution to journalArticlepeer-review

Abstract

In multi-subcarrier wavelength-division-multiplexed (WDM) systems, spectrally close subcarriers are influenced by nonlinearity in a similar way. This causes the nonlinear interference noise (NLIN) that affects them to be correlated - a fact that can be exploited for nonlinearity mitigation. Focusing on the effect of nonlinearity-induced phase noise (NLPN), we find the auto-correlation and cross-correlation functions of the NLPN influencing different subcarriers, and propose a mitigation algorithm that takes advantage of these correlations so as to improve the overall system performance. We validate our results numerically and experimentally.

Original languageEnglish
Article number8825463
Pages (from-to)1148-1156
Number of pages9
JournalJournal of Lightwave Technology
Volume38
Issue number6
DOIs
StatePublished - 15 Mar 2020

Keywords

  • Nonlinear interference
  • nonlinearity mitigation
  • optical fiber communication
  • time varying inter symbol interference

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