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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 2 — Feb. 1, 2010
  • pp: 259–265

Quantum detection of wavelength-division-multiplexing optical coherent signals

Atsushi Waseda, Masahiro Takeoka, Masahide Sasaki, Mikio Fujiwara, and Hidema Tanaka  »View Author Affiliations


JOSA B, Vol. 27, Issue 2, pp. 259-265 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000259


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Abstract

We numerically evaluate the transmission rates of a single fiber with the wavelength-division-multiplexing (WDM) transmission of coherent signals with conventional homodyne-based (dyne-type) detections and various quantum detection strategies. We reveal the quantitative gap between these detection strategies especially in the quantum-limited region where the quantum noise seriously limits the transmission rate. For an extremely weak signal input power, there is a crucial gap between the capacity limit and the transmission rates of the WDM system with dyne-type detections. We show that this gap is filled by applying a collective square root detection (SRD) only for each channel, not necessary for quantum collective decoding among WDM channels.

© 2010 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.5565) Fiber optics and optical communications : Quantum communications
(270.5565) Quantum optics : Quantum communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: July 8, 2009
Revised Manuscript: November 7, 2009
Manuscript Accepted: November 7, 2009
Published: January 19, 2010

Citation
Atsushi Waseda, Masahiro Takeoka, Masahide Sasaki, Mikio Fujiwara, and Hidema Tanaka, "Quantum detection of wavelength-division-multiplexing optical coherent signals," J. Opt. Soc. Am. B 27, 259-265 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-2-259

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