Turbulence-induced fading probability in coherent optical communication through the atmosphere
Applied Optics, Vol. 46, Issue 29, pp. 7218-7226 (2007)
http://dx.doi.org/10.1364/AO.46.007218
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Abstract
To assess the coherent detection of an optical signal perturbed by atmospheric turbulence, the loss in the mean signal-to-noise ratio (SNR) is usually invoked although it constitutes a limited description of the signal fluctuations. To produce statistical distributions of the SNR, we generate random optical fields. A 5∕3-power law for the phase structure function is considered. The benefit of a wavefront tilt correction is assessed. Based on the 1%-probability fade, an optimum receiver size is found. For phase fluctuations only, a similarity between the signal distribution and the beta distribution is observed. Phase and amplitude are assumed independent, and the influence of amplitude perturbations is assessed with a scintillation index of 2. Turbulence impairments are compared for a coherent receiver and a direct-detection receiver.
© 2007 Optical Society of America
OCIS Codes
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: April 2, 2007
Revised Manuscript: August 6, 2007
Manuscript Accepted: August 10, 2007
Published: October 5, 2007
Citation
N. Perlot, "Turbulence-induced fading probability in coherent optical communication through the atmosphere," Appl. Opt. 46, 7218-7226 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-29-7218
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