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Optical Engineering

Use of a partially coherent transmitter beam to improve the statistics of received power in a free-space optical communication system: theory and experimental results
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Paper Abstract

Controlling the spatial coherence of the transmitted beam has been suggested as a means of improving the statistics of the received power in long-range free-space optical communications systems. We present an experiment demonstrating the concept of transmitting a partially spatial coherent beam through a turbulent path in a lab setting to overcome long-term dropouts in the received power. It is demonstrated both theoretically and experimentally that using a partially spatial coherent beam can decrease the scintillation index by ∼ 50% and the mean intensity in the simulation by ∼ 90% regardless of turbulence strength, when compared to the intensity of a fully coherent source in turbulence.

Paper Details

Date Published: 1 February 2011
PDF: 7 pages
Opt. Eng. 50(2) 025002 doi: 10.1117/1.3533737
Published in: Optical Engineering Volume 50, Issue 2
Show Author Affiliations
Kyle R. Drexler, Trex Enterprises Corp. (United States)
Michael C. Roggemann, Michigan Technological Univ. (United States)
David G. Voelz, New Mexico State Univ. (United States)

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