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Proceedings Paper

A conical scan free space optical tracking system for fading channels
Author(s): Robert J. Murphy; Alicia M. Volpicelli; William Wilcox; David A. Crucioli; Timothy H. Williams
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Paper Abstract

Free space optical communication systems require robust pointing and tracking to establish and maintain lineof- sight (LOS). Atmospheric scintillation can present a challenge to the LOS tracking systems located at each end of the link. This paper describes a pointing, acquisition, and tracking (PAT) approach for single-mode fiber coupling, which was successfully demonstrated over a 5.4 km lasercom link that was subject to severe turbulence conditions. One of the primary advantages of the scheme described is its compensation for thermo-mechanical drift, which simplifies optomechanical design and allows use of simple COTS hardware. An overview of the PAT system and performance data are presented.

Paper Details

Date Published: 21 August 2009
PDF: 7 pages
Proc. SPIE 7464, Free-Space Laser Communications IX, 74640P (21 August 2009); doi: 10.1117/12.826299
Show Author Affiliations
Robert J. Murphy, MIT Lincoln Lab. (United States)
Alicia M. Volpicelli, MIT Lincoln Lab. (United States)
William Wilcox, MIT Lincoln Lab. (United States)
David A. Crucioli, MIT Lincoln Lab. (United States)
Timothy H. Williams, MIT Lincoln Lab. (United States)


Published in SPIE Proceedings Vol. 7464:
Free-Space Laser Communications IX
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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