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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 24 — Nov. 21, 2011
  • pp: 24030–24036

Analysis of dispersion-enhanced phase noise in CO-OFDM systems with RF-pilot phase compensation

Qunbi Zhuge, Mohamed Morsy-Osman, and David V. Plant  »View Author Affiliations

Optics Express, Vol. 19, Issue 24, pp. 24030-24036 (2011)

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We show that dispersion-enhanced phase noise (DEPN) induces performance degradations in both conventional CO-OFDM systems and reduced-guard-interval (RGI) CO-OFDM systems employing RF-pilot phase compensation. After analytically studying DEPN, we show that DEPN causes a 2 to 6 dB optical signal-to-noise ratio (OSNR) penalty at transmission distances of 3200 km and 1600 km for 28 and 56 Gbaud QPSK systems, respectively, using lasers with 2 MHz linewidths. At such distances, DEPN reduces the linewidth tolerance at 1 dB OSNR penalty to 250-500 kHz while in the back-to-back case the tolerance is 1-3 MHz for both systems. When fiber nonlinearity is included, we observe similar performance degradations.

© 2011 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 25, 2011
Revised Manuscript: October 21, 2011
Manuscript Accepted: October 24, 2011
Published: November 10, 2011

Qunbi Zhuge, Mohamed Morsy-Osman, and David V. Plant, "Analysis of dispersion-enhanced phase noise in CO-OFDM systems with RF-pilot phase compensation," Opt. Express 19, 24030-24036 (2011)

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