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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 15 — Jul. 23, 2007
  • pp: 9418–9433

Accurate BER evaluation for lumped DPSK and OOK systems with PMD and PDL

Zhongxi Zhang, Liang Chen, and Xiaoyi Bao  »View Author Affiliations

Optics Express, Vol. 15, Issue 15, pp. 9418-9433 (2007)

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New forms using Dirac bra-ket notations and their transformations to express electrically filtered currents are presented for optical systems using either binary differential phase-shift keying (2-DPSK) or ON-OFF keying (OOK) with lumped first-order PMD and PDL, arbitrary optical and electrical filtering and pulse shaping. Based on these forms, the moment generating functions (MGFs) and bit-error-ratios (BERs) for different systems are obtained. Our results show that, for a given BER, 2-DPSK requires ~5dB lower input signal-to-noise ratio than OOK. By comparing BERs for different polarization systems, we also show that the PDL-induced partially polarized noise can significantly improve system performance and reduce BER variation caused by the random couplings between signal polarization, PDL and PMD vectors.

© 2007 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2330) Fiber optics and optical communications : Fiber optics communications
(260.2030) Physical optics : Dispersion
(260.5430) Physical optics : Polarization

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: April 13, 2007
Revised Manuscript: June 29, 2007
Manuscript Accepted: July 3, 2007
Published: July 16, 2007

Zhongxi Zhang, Liang Chen, and Xiaoyi Bao, "Accurate BER evaluation for lumped DPSK and OOK systems with PMD and PDL," Opt. Express 15, 9418-9433 (2007)

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