Adaptive pulse shaping through BER Feedback

Steve M. Webb, John G. Ellison, Stephen R. Desbruslais, M.P. Fedoruk, Sergei Turitsyn

Research output: Contribution to journalArticlepeer-review


In this paper, we propose a simplified approach to optical signal predistortion based on adaptive pulse shaping through asymmetrical control of a Mach-Zehnder modulator above its switching voltage. The scheme allows natural tailoring of transmitted pulses by optimizing the received pulse. We demonstrate enhancement of the power tolerance in nonrepeated systems and improved OSNR/BER performance and dispersion tolerance in ultra-long-haul fiber systems operating at 10 Gb/s and 20 Gb/s channel rates. The improved performance is demonstrated through simulations and experiment.
Original languageEnglish
Pages (from-to)3765-3772
Number of pages8
JournalJournal of Lightwave Technology
Issue number17
Publication statusPublished - 1 Sept 2009


  • adaptive pulse shaping
  • BER feedback
  • fiber optics
  • signal preprocessing
  • transmission


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