Ultimate information capacity of fiber-optic networks

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations


There have been numerous attempts to determine the channel capacity of a nonlinear fiber optics communication channel. The main approach, until recently, was to consider ASE noise as a predominant effect and to observe the fiber nonlinearities as the perturbation of linear case or as the multiplicative noise. In this invited paper, we describe how to determine the true fiber-optics channel capacity. Because in most of practical applications the channel input distribution is uniform, we also describe how to determine the uniform information capacity, which represents the lower bound on channel capacity. This method consists of two steps: 1) approximating probability density functions (PDFs) for energy of pulses, which is done by one of the following approaches: (a) evaluation of histograms, (b) instanton approach or (c) edgeworth expansion, and 2) estimating information capacities by applying a method originally proposed by Arnold and Pfitser.

Original languageEnglish (US)
Title of host publicationOptical Metro Networks and Short-Haul Systems II
StatePublished - 2010
EventOptical Metro Networks and Short-Haul Systems II - San Francisco, CA, United States
Duration: Jan 27 2010Jan 28 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherOptical Metro Networks and Short-Haul Systems II
Country/TerritoryUnited States
CitySan Francisco, CA


  • Channel capacity
  • Coherent detection
  • Direct detection
  • Fiber-optics communications
  • Forward error correction (FEC)
  • Low-density parity-check (LDPC) codes
  • Modulation
  • Optical networks

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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