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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 14 — Jul. 7, 2008
  • pp: 10412–10420

Optical homodyne PSK demonstration of 1.5 photons per bit at 156 Mbps with rate-½ turbo coding

M. L. Stevens, D. O. Caplan, B.S Robinson, D. M. Boroson, and A. L. Kachelmyer  »View Author Affiliations


Optics Express, Vol. 16, Issue 14, pp. 10412-10420 (2008)
http://dx.doi.org/10.1364/OE.16.010412


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Abstract

We report the first demonstration of a near quantum-limited optical homodyne PSK receiver combined with powerful forward-error-correction coding, achieving 1.5 photons/bit sensitivity, within 4.5 dB of the Shannon limit. Phase-locking was achieved at 1.55 µm using an analog dither-based optical phase-locked loop with an external phase modulator. Analysis for this configuration with arbitrary loop damping is given showing a performance advantage for the overdamped case.

© 2008 Optical Society of America

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: March 4, 2008
Revised Manuscript: May 7, 2008
Manuscript Accepted: June 2, 2008
Published: June 27, 2008

Citation
M. L. Stevens, D. O. Caplan, B. S. Robinson, D. M. Boroson, and A. L. Kachelmyer, "Optical homodyne PSK demonstration of 1.5 photons per bit at 156 Mbps with rate-½ turbo coding," Opt. Express 16, 10412-10420 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-14-10412


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