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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 13 — Jun. 22, 2009
  • pp: 10814–10819

Which is the most power-efficient modulation format in optical links?

Magnus Karlsson and Erik Agrell  »View Author Affiliations

Optics Express, Vol. 17, Issue 13, pp. 10814-10819 (2009)

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By exploiting the electromagnetic wave’s four-dimensional signal space, we find that for the additive white Gaussian noise channel, the modulation format with best sensitivity to be an 8-level format with 1.76 dB asymptotic gain over BPSK, for uncoded optical transmission with coherent detection. Low-complexity modulators are presented for the format, as well as an interpretation in terms of quantum-limited sensitivity.

© 2009 Optical Society of America

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: April 3, 2009
Revised Manuscript: June 5, 2009
Manuscript Accepted: June 7, 2009
Published: June 12, 2009

Magnus Karlsson and Erik Agrell, "Which is the most power-efficient modulation format in optical links?," Opt. Express 17, 10814-10819 (2009)

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