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Proceedings Paper

3.5 micron free-space laser communications
Author(s): Allen Geiger; Chueh Ting; Edward J. Burlbaw; Jianwu Ding; Shinn-Der Sheu
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Paper Abstract

Free-space laser communication has been demonstrated with application potential in many areas such as line-of-sight communications, satellite communications and the last mile solution in a fiber optics networking. Both 0.8 and 1.5 micron wavelengths are currently used in state-of-the-art free space laser communication systems; unfortunately the system performance is imposed by atmospheric turbulence. To reduce the atmospheric effect in free-space laser communication systems, several techniques have been used, such as adaptive optics, aperture averaging and multiple transmitters; however, significant improvement has not been achieved. Theoretically, the seeing effect may be released using a longer wavelength. In this paper, we present a 3.5 micron free-space laser communication system model and its system performance evaluation. A 3.5 micron propagation model based on MODTRAN simulation results in different weather patterns is presented first, and a propagation link budget system model is described after that. The propagation channel performance evaluation results are presented by means of bit error rate versus various propagation distances.

Paper Details

Date Published: 1 September 2006
PDF: 9 pages
Proc. SPIE 6304, Free-Space Laser Communications VI, 63041L (1 September 2006); doi: 10.1117/12.682557
Show Author Affiliations
Allen Geiger, Akamai Physics, Inc. (United States)
Chueh Ting, Akamai Physics, Inc. (United States)
Edward J. Burlbaw, Akamai Physics, Inc. (United States)
Jianwu Ding, Akamai Physics, Inc. (United States)
Shinn-Der Sheu, Nan Jeon Institute of Technology (Taiwan)

Published in SPIE Proceedings Vol. 6304:
Free-Space Laser Communications VI
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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