Dispersion tolerance of coherent WDM

Fatima C. Garcia Gunning*, Tadhg Healy, Andrew D. Ellis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We present the transmission of a 298.2-Gb/s copolarized coherent wavelength-division-multiplexing system over 80 km of standard single-mode fiber, achieving an information spectral density of 1 b/s/Hz with no prefilters at the transmitter. Odd and even tributary channels were encoded with data and delayed-data-bar pseudorandom binary sequence 27 - 1 patterns. The dispersion tolerance is investigated, and the dispersion penalty of this system is improved through adjustment of the relative phase of adjacent channels. Under optimum conditions, the dispersion penalty could be reduced from over 3 dB to less than 1 dB.

Original languageEnglish
Pages (from-to)1338-1340
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number12
Publication statusPublished - 15 Jun 2006


  • Forward error correction (FEC)
  • Optical propagation
  • Phase control
  • Wavelength-division multiplexing (WDM)


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