Clock recovery challenges in DSP-based coherent single-mode and multi-mode optical systems

Júlio César Medeiros Diniz*, Francesco Da Ros, Darko Zibar

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

We present an analysis of clock recovery algorithms in both polarization division multiplexing systems and mode division multiplexing systems. The impact of inter-polarization time skew and polarization mode dispersion in single-mode fibers, as well as the combined impact of mode mixing and mode group delay spread in multi-mode fibers under different coupling regimes are investigated. Results show that although the clock tone vanishing has a known solution for single-mode systems, in multi-mode systems even for low group delay spread, strong coupling will cause clock tone extinction, making it harder to implement an effective clock recovery scheme.
Original languageEnglish
Article number59
JournalFuture Internet
Volume10
Issue number7
Number of pages14
ISSN1999-5903
DOIs
Publication statusPublished - 2018

Keywords

  • Optical communications
  • Clock recovery
  • Space-division multiplexing
  • Coherent communications

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