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Proceedings Paper

Architecture overview and data summary of a 5.4 km free-space laser communication experiment
Author(s): John D. Moores; Frederick G. Walther; Joseph A. Greco; Steven Michael; William E. Wilcox Jr.; Alicia M. Volpicelli; Richard J. Magliocco; Scott R. Henion
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Paper Abstract

MIT Lincoln Laboratory designed and built two free-space laser communications terminals, and successfully demonstrated error-free communication between two ground sites separated by 5.4 km in September, 2008. The primary goal of this work was to emulate a low elevation angle air-to-ground link capable of supporting standard OTU1 (2.667 Gb/s) data formatting with standard client interfaces. Mitigation of turbulence-induced scintillation effects was accomplished through the use of multiple small-aperture receivers and novel encoding and interleaver hardware. Data from both the field and laboratory experiments were used to assess link performance as a function of system parameters such as transmitted power, degree of spatial diversity, and interleaver span, with and without forward error correction. This work was sponsored by the Department of Defense, RRCO DDR&E, under Air Force Contract FA8721-05-C-0002. Opinions, interpretations, conclusions and recommendations are those of the authors and are not necessarily endorsed by the United States Government.

Paper Details

Date Published: 21 August 2009
PDF: 9 pages
Proc. SPIE 7464, Free-Space Laser Communications IX, 746404 (21 August 2009); doi: 10.1117/12.825591
Show Author Affiliations
John D. Moores, MIT Lincoln Lab. (United States)
Frederick G. Walther, MIT Lincoln Lab. (United States)
Joseph A. Greco, MIT Lincoln Lab. (United States)
Steven Michael, MIT Lincoln Lab. (United States)
William E. Wilcox Jr., MIT Lincoln Lab. (United States)
Alicia M. Volpicelli, MIT Lincoln Lab. (United States)
Richard J. Magliocco, MIT Lincoln Lab. (United States)
Scott R. Henion, 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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