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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 9 — Apr. 25, 2011
  • pp: 8320–8326

Novel real-time homodyne coherent receiver using a feed-forward based carrier extraction scheme for phase modulated signals

Selwan K. Ibrahim, Stylianos Sygletos, Ruwan Weerasuriya, and Andrew D. Ellis  »View Author Affiliations


Optics Express, Vol. 19, Issue 9, pp. 8320-8326 (2011)
http://dx.doi.org/10.1364/OE.19.008320


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Abstract

We report a novel real-time homodyne coherent receiver based on a DPSK optical-electrical-optical (OEO) regenerator used to extract a carrier from carrier-less phase modulated signals based on feed-forward based modulation stripping. The performance of this non-DSP based coherent receiver was evaluated for 10.66Gbit/s BPSK signals. Self-homodyne coherent detection and homodyne detection with an injection-locked local oscillator laser was demonstrated. The performance was evaluated by measuring the electrical signal-to-noise (SNR) and recording the eye diagrams. Using injection-locking for the LO improves the performance and enables homodyne detection with optical injection-locking to operate with carrier-less BPSK signals without the need for polarization multiplexed pilot-tones.

© 2011 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2920) Fiber optics and optical communications : Homodyning
(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: January 10, 2011
Revised Manuscript: February 14, 2011
Manuscript Accepted: February 17, 2011
Published: April 15, 2011

Citation
Selwan K. Ibrahim, Stylianos Sygletos, Ruwan Weerasuriya, and Andrew D. Ellis, "Novel real-time homodyne coherent receiver using a feed-forward based carrier extraction scheme for phase modulated signals," Opt. Express 19, 8320-8326 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-9-8320


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