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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 8120–8125

Phase noise analysis of injected gain switched comb source for coherent communications

Rui Zhou, Tam N. Huynh, Vidak Vujicic, Prince M. Anandarajah, and Liam P. Barry  »View Author Affiliations

Optics Express, Vol. 22, Issue 7, pp. 8120-8125 (2014)

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We present experimentally and analytically the phase noise characterization of an externally injected gain switched comb source. The results reveal the residual high frequency FM noise in the comb lines, which stays unnoticed in the optical linewidth value but leads to an increased phase-error variance. The potential impact of the residual phase noise is investigated in a 10.7 GBaud optical DQPSK system where a 2 dB power penalty is recorded at BER of 10−9. In a 10.7 GBaud digital coherent QPSK system no penalty is observed but with 5 GBaud 16-QAM format a 3 dB penalty exists at the FEC limit of 4.4e-3.

© 2014 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(140.3520) Lasers and laser optics : Lasers, injection-locked

ToC Category:
Optical Communications

Original Manuscript: January 20, 2014
Revised Manuscript: March 13, 2014
Manuscript Accepted: March 14, 2014
Published: March 31, 2014

Rui Zhou, Tam N. Huynh, Vidak Vujicic, Prince M. Anandarajah, and Liam P. Barry, "Phase noise analysis of injected gain switched comb source for coherent communications," Opt. Express 22, 8120-8125 (2014)

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