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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 20 — Sep. 27, 2010
  • pp: 20746–20758

Spatially partially coherent beam parameter optimization for free space optical communications

Deva K. Borah and David G. Voelz  »View Author Affiliations

Optics Express, Vol. 18, Issue 20, pp. 20746-20758 (2010)

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The problem of coherence length optimization in a spatially partially coherent beam for free space optical communication is investigated. The weak turbulence regime is considered. An expression for the scintillation index in a series form is derived and conditions for obtaining improvement in outage probability through optimization in the coherence length of the beam are described. A numerical test for confirming performance improvement due to coherence length optimization is proposed. The effects of different parameters, including the phase front radius of curvature, transmission distance, wavelength and beamwidth are studied. The results show that, for smaller distances and larger beamwidths, improvements in outage probability of several orders of magnitude can be achieved by using partially coherent beams.

© 2010 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(030.7060) Coherence and statistical optics : Turbulence
(060.2605) Fiber optics and optical communications : Free-space optical communication
(140.3295) Lasers and laser optics : Laser beam characterization

ToC Category:
Coherence and Statistical Optics

Original Manuscript: July 28, 2010
Revised Manuscript: August 24, 2010
Manuscript Accepted: September 3, 2010
Published: September 15, 2010

Deva K. Borah and David G. Voelz, "Spatially partially coherent beam parameter optimization for free space optical communications," Opt. Express 18, 20746-20758 (2010)

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