Modeling of coherent and incoherent rayleigh crosstalk in conventional optical links

C. F. Marki, N. Alic, S. Esener, S. Radic

Research output: Contribution to journalArticlepeer-review


Performance of Rayleigh-dominated transmission is modeled using approximated and exact noise power spectral densities (PSDs) and results are compared to experimental measurements for nonreturn-to-zero, return-to-zero, and duobinary modulation formats. Both models accurately predict penalties associated with coherent Rayleigh crosstalk for all three formats with typical accuracy within 1 dB. For incoherent Rayleigh crosstalk, the numerical model using exact PSDs improves prediction accuracy by as much as 4 dB over the analytic model. The large, previously unexplained disagreement is attributed to the set of analytic approximations. Our results indicate that a rigorous description of the channel spectrum should be used when calculating impairments caused by incoherent Rayleigh crosstalk, particularly in very dense wavelength-division-multiplexed systems requiring a narrow optical filtering

Original languageEnglish (US)
Pages (from-to)1735-1737
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number21
StatePublished - Nov 1 2007
Externally publishedYes


  • Bidirectional transmission
  • Modulation formats
  • Rayleigh backscattering (RB)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Modeling of coherent and incoherent rayleigh crosstalk in conventional optical links'. Together they form a unique fingerprint.

Cite this