An improved technique for suppression of intrachannel four-wave mixing in 40-Gb/s optical transmission systems

Hussam G. Batshon, Ivan B. Djordjevic, Bane V. Vasic

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

This letter presents an efficient method for testing the efficiency of modulation techniques for countering the effects of intrachannel four-wave mixing by calculating the sum of all the contributors at a given resonance position (the position affected by the surrounding pulses). In addition to this method, we are proposing a modulation technique that shows a significant Q-factor improvement of up to 7.5 dB (depending on the number of spans and the phase sequence implemented) over the uncoded return-to-zero ON-OFF keying. Although the implementation of this phase modulation technique is simple, it is still very efficient in extending the nonlinearity tolerance and enhancing the performance of a high-speed optical transmission system.

Original languageEnglish (US)
Pages (from-to)67-69
Number of pages3
JournalIEEE Photonics Technology Letters
Volume19
Issue number2
DOIs
StatePublished - Jan 15 2007

Keywords

  • Communication system nonlinearities
  • Forward-error correction (FEC)
  • Low-density parity-check (LDPC) codes
  • Modulation coding
  • Optical Kerr effect
  • Optical communications

ASJC Scopus subject areas

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

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