Simultaneous and independent OSNR and chromatic dispersion monitoring using empirical moments of asynchronously sampled signal amplitudes

Faisal Nadeem Khan, Pak Tao Lau, Trevor B. Anderson, Jonathan C. Li, Chao Lu, Ping Kong Alexander Wai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)


We analytically investigate and derive equations for the empirical moments of asynchronously sampled signal amplitudes as functions of signal power, noise power, and accumulated chromatic dispersion (CD) of a transmission link. The solutions of these equations enable low-cost, simultaneous and independent monitoring of in-band optical signal-to-noise ratio (OSNR) and CD of the fiber link for various modulation formats and data rates. Numerical simulations are performed to validate the proposed technique and the results demonstrate independent OSNR and CD monitoring with good accuracy and large monitoring ranges. The influence of first-order polarization-mode dispersion (PMD) on the accuracy of the proposed monitoring technique is also investigated.
Original languageEnglish
Article number6237636
Pages (from-to)1340-1350
Number of pages11
JournalIEEE Photonics Journal
Issue number5
Publication statusPublished - 13 Aug 2012


  • asynchronous sampling
  • chromatic dispersion monitoring
  • empirical moments
  • fiber-optic communications
  • multi-impairment monitoring
  • Optical performance monitoring (OPM)
  • optical signal-to-noise ratio (OSNR) monitoring

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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