Mitigation of nonlinearity based on optimized percentage of dispersion pre-compensation in coherent optical PDM-OFDM systems

Shengjiao Cao, Changyuan Yu, Pooi Yuen Kam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


The one-step nonlinearity compensation method, i.e., nonlinear phase rotation (NPR), is shown to be affected by the amount of pre-compensated dispersion for coherent optical OFDM system with a dispersion unmanaged link. It is observed that NPR plus optimal percentage, around 50%, of dispersion pre-compensation is performing better than 1-step digital back-propagation (BP), with the same computational complexity. The optimized scheme results in a 2-dBm improvement in optimal launch power as well as 1.75-dB improvement in optimal signal quality compared to 1-step BP after 800-km transmission at the bit rate of 20 Gb/s.
Original languageEnglish
Title of host publication2012 Photonics Global Conference, PGC 2012
Publication statusPublished - 1 Dec 2012
Externally publishedYes
Event2012 Photonics Global Conference, PGC 2012 - Singapore, Singapore
Duration: 13 Dec 201216 Dec 2012


Conference2012 Photonics Global Conference, PGC 2012


  • coherent optical OFDM
  • dispersion pre-compensation
  • nonlinear phase rotation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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