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Proceedings Paper

Integrated approach to free-space optical communication
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Paper Abstract

Lasers offer tremendous advantages over RF communication systems in bandwidth and security. Atmospheric turbulence causes severe received power variations and high bit error rates (BERs) in airborne laser communication. If two or more laser beams are separated sufficiently, they can effectively "average out" the effects of the turbulence. This requisite separation distance is derived for multiple geometries, turbulence conditions, and turbulence effects. Integrating multiple techniques into a system alleviates the deleterious effects of turbulence without bulky adaptive optics systems. Wave optics simulations show multiple transmitters, receiver and transmitter trackers, and adaptive thresholding significantly reduce BER (by over 10,000 times).

Paper Details

Date Published: 24 February 2009
PDF: 15 pages
Proc. SPIE 7200, Atmospheric Propagation of Electromagnetic Waves III, 72000I (24 February 2009); doi: 10.1117/12.812153
Show Author Affiliations
Jason D. Schmidt, Air Force Institute of Technology (United States)
James A. Louthain, Air Force Institute of Technology (United States)

Published in SPIE Proceedings Vol. 7200:
Atmospheric Propagation of Electromagnetic Waves III
Olga Korotkova, Editor(s)

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