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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 7 — Apr. 1, 2013
  • pp: 1055–1057

Relative phase noise induced impairment in M-ary phase-shift-keying coherent optical communication system using distributed fiber Raman amplifier

Jingchi Cheng, Ming Tang, Songnian Fu, Perry Ping Shum, and Deming Liu  »View Author Affiliations


Optics Letters, Vol. 38, Issue 7, pp. 1055-1057 (2013)
http://dx.doi.org/10.1364/OL.38.001055


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Abstract

We show for the first time, to the best of our knowledge, that, in a coherent communication system that employs a phase-shift-keying signal and Raman amplification, besides the pump relative intensity noise (RIN) transfer to the amplitude, the signal’s phase will also be affected by pump RIN through the pump–signal cross-phase modulation. Although the average pump power induced linear phase change can be compensated for by the phase-correction algorithm, a relative phase noise (RPN) parameter has been found to characterize pump RIN induced stochastic phase noise. This extra phase noise brings non-negligible system impairments in terms of the Q-factor penalty. The calculation shows that copumping leads to much more stringent requirements to pump RIN, and relatively larger fiber dispersion helps to suppress the RPN induced impairment. A higher-order phase-shift keying (PSK) signal is less tolerant to noise than a lower-order PSK.

© 2013 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(230.4480) Optical devices : Optical amplifiers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 13, 2012
Revised Manuscript: February 14, 2013
Manuscript Accepted: February 24, 2013
Published: March 20, 2013

Citation
Jingchi Cheng, Ming Tang, Songnian Fu, Perry Ping Shum, and Deming Liu, "Relative phase noise induced impairment in M-ary phase-shift-keying coherent optical communication system using distributed fiber Raman amplifier," Opt. Lett. 38, 1055-1057 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-7-1055


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References

  1. X. Zhou, L. E. Nelson, R. Isaac, P. Magil, B. Zhu, and D. W. Peckham, in Optical Fiber Communication Conference, OSA Technical Digest (Optical Society of America, 2012), paper OM2A.2.
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  3. G. P. Agrawal, Nonlinear Fiber Optics, 3rd ed. (Academic, 2001).
  4. S. Zhang, P. Y. Kam, J. Chen, and C. Yu, Opt. Express 18, 12088 (2010). [CrossRef]

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