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Proceedings Paper

Link availability model for optical communication through clouds
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Paper Abstract

We present experimental results for the adaptive compensation of atmospheric turbulence effects on a free-space laser communication links at near horizontal propagation paths over 2.5 km and 5 km lengths. A high-resolution micro-machined piston type mirror array (12x12 elements) and a fast beam steering mirror were used in an adaptive optics laser communication system based on the model-free stochastic parallel gradient descent (SPGD) optimization wavefront control technique. Control of the mirror was performed by a VLSI SPGD micro-controller. The experimental results demonstrate the improvement of the receiver performance (fiber coupling efficiency) on a summer day with a refractive index structure constant in the order of Cn2≈10-14 m-2/3.

Paper Details

Date Published: 9 December 2002
PDF: 12 pages
Proc. SPIE 4821, Free-Space Laser Communication and Laser Imaging II, (9 December 2002); doi: 10.1117/12.450995
Show Author Affiliations
Daniel V. Hahn, Johns Hopkins Univ. (United States)
Clinton L. Edwards, Univ. of Maryland/College Park (United States)
Donald Dean Duncan, Johns Hopkins Univ. (United States)


Published in SPIE Proceedings Vol. 4821:
Free-Space Laser Communication and Laser Imaging II
Jennifer C. Ricklin; David G. Voelz, Editor(s)

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