A free-space optical terminal for fading channels
Name
Williams-2009-A free-space optical terminal for fading channels.pdf
Size
5.16 MB
Format
Adobe PDF
Checksum (MD5)
243b9489ddbc2e5c41ae8b502e34e676
Author(s)
Crucioli, David A.
Wilcox, William E., Jr.
Volpicelli, Alicia M.
Walther, Frederick G.
Murphy, Robert J.
Williams, Timothy H.
Date Issued
August 2009
Journal
Proceedings of SPIE--the International Society for Optical Engineering; v.7464
Publisher
The International Society for Optical Engineering
Citation
Williams, T. et al. “A free-space optical terminal for fading channels.” Free-Space Laser Communications IX. Ed. Arun K. Majumdar & Christopher C. Davis. San Diego, CA, USA: SPIE, 2009. 74640W-7. © 2009 SPIE--The International Society for Optical Engineering
Version
Final published version
Abstract
This paper describes a lasercom terminal using spatial diversity to mitigate fading caused by atmospheric scintillation. Multiple receive apertures are separated sufficiently to capture statistically independent samples of the incoming beam. The received optical signals are tracked individually, photo-detected, and summed electrically, with measured diversity gain. The terminal consists of COTS components. It was used in successful demonstrations over a 5.4km ground-ground link from June through September 2008, during which it experienced a wide temperature range. Design overview and hardware realization are presented. 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.
MIT Department
Lincoln Laboratory
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1117/12.826285
