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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 15 — Jul. 19, 2010
  • pp: 16273–16278

Impact of phase to amplitude noise conversion in coherent optical systems with digital dispersion compensation

Irshaad Fatadin and Seb J. Savory  »View Author Affiliations

Optics Express, Vol. 18, Issue 15, pp. 16273-16278 (2010)

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The impact of phase to amplitude noise conversion for QPSK, 16-QAM, and 64-QAM coherent optical systems are investigated with electronically-compensated chromatic dispersion (CD). The electronic equalizer is shown to convert the phase noise from the local oscillator (LO) to amplitude noise, limiting the amount of CD that can ideally be compensated digitally. The simulation results demonstrate that the performance of coherent systems can significantly be degraded with digitally compensated CD and LO phase noise. The maximum tolerable LO linewidth is also investigated for the different modulation formats and found to become increasingly stringent for longer transmission distance and higher symbol rate.

© 2010 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 22, 2010
Revised Manuscript: July 9, 2010
Manuscript Accepted: July 9, 2010
Published: July 16, 2010

Irshaad Fatadin and Seb J. Savory, "Impact of phase to amplitude noise conversion in coherent optical systems with digital dispersion compensation," Opt. Express 18, 16273-16278 (2010)

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