Nonlinear codes for dispersive nonlinear fibers

Jaime A. Anguita, Mark A. Neifeld

Research output: Contribution to journalArticlepeer-review


We consider a single wavelength channel in a nonlinear dispersive single-mode fiber. We simulate the propagation of binary sequences using ON-OFF keying return-to-zero modulation at a bit rate of 10 Gb/s, under different dispersion and input power conditions. We determine the impact that dispersion and nonlinearity have on the pulse sequences by measuring the Euclidian distances (EDs) among all pairs of received sequences. We then model the set of EDs as a fully connected graph and by means of a clique-finding algorithm we search for subsets of sequences that form codes matched to this nonlinear channel, resulting in significant bit-error-rate improvement.

Original languageEnglish (US)
Pages (from-to)2622-2624
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number12
StatePublished - Dec 2004


  • Dispersive nonlinear fiber
  • Fiber-optic communications
  • Forward error correction
  • Nonlinear codes

ASJC Scopus subject areas

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


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