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Proceedings Paper

Effects of beam wander on free-space optical communications through turbulent atmosphere
Author(s): Zhijun Zhao; Rui Liao
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Paper Abstract

Effects of beam wander on uncoded bit-error-rate (BER) of direct-detection OOK modulated FSO communication systems using collimated and focused Gaussian beams are studied. Channel fading statistics are obtained from large-scale wave optics simulations and compared with the closed-form log-normal and gamma-gamma models. The avalanche photodiode (APD) is chosen for photodetection. The accurate McIntyre-Conradi APD model is adopted for performance evaluation. Results show that large performance gain (more than 15dB) can be achieved with fast-tracked focused beams. The upper bound of higher-order adaptive optics gain beyond tracking gain is also studied.

Paper Details

Date Published: 4 May 2010
PDF: 12 pages
Proc. SPIE 7685, Atmospheric Propagation VII, 76850K (4 May 2010); doi: 10.1117/12.852479
Show Author Affiliations
Zhijun Zhao, Michigan Technological Univ. (United States)
Rui Liao, Michigan Technological Univ. (United States)

Published in SPIE Proceedings Vol. 7685:
Atmospheric Propagation VII
Linda M. Wasiczko Thomas; Earl J. Spillar, Editor(s)

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