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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 22600–22606

Maximum likelihood sequence detection in laser phase noise-impaired coherent optical systems

Xuguang Shao, Pooi-Yuen Kam, and Changyuan Yu  »View Author Affiliations


Optics Express, Vol. 19, Issue 23, pp. 22600-22606 (2011)
http://dx.doi.org/10.1364/OE.19.022600


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Abstract

A maximum likelihood sequence detection (MLSD) receiver is used to detect data sequences in single-carrier coherent optical systems in the presence of laser phase noise. It requires no explicit phase estimation and involves only linear operations. It consistently shows improvement in the OSNR penalty (e.g., 1.1 dB at BER = 10−4 with memory length L =3) and the laser linewidth tolerance (e.g., around 4 times that of DAML at 1dB OSNR penalty at BER = 10−4 with memory length L =3) over the well-known DAML and Mth power approaches in laser phase noise (LPN)-impaired coherent optical systems.

© 2011 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications
(060.5060) Fiber optics and optical communications : Phase modulation

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 20, 2011
Revised Manuscript: September 11, 2011
Manuscript Accepted: September 25, 2011
Published: October 25, 2011

Citation
Xuguang Shao, Pooi-Yuen Kam, and Changyuan Yu, "Maximum likelihood sequence detection in laser phase noise-impaired coherent optical systems," Opt. Express 19, 22600-22606 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-23-22600


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References

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