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Proceedings Paper

Demonstration of a high-efficiency free-space optical communications link
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Paper Abstract

In this paper we discuss recent progress on the implementation of a hardware free-space optical communications test-bed. The test-bed implements an end-to-end communications system comprising a data encoder, modulator, laser-transmitter, telescope, detector, receiver and error-correction-code decoder. Implementation of each of the component systems is discussed, with an emphasis on 'real-world' system performance degradation and limitations. We have demonstrated real-time data rates of 44 Mbps and photon efficiencies of approximately 1.8 bits/photon over a 100m free-space optical link.

Paper Details

Date Published: 24 February 2009
PDF: 12 pages
Proc. SPIE 7199, Free-Space Laser Communication Technologies XXI, 71990A (24 February 2009); doi: 10.1117/12.809720
Show Author Affiliations
Kevin Birnbaum, Jet Propulsion Lab. (United States)
William Farr, Jet Propulsion Lab. (United States)
Jonathan Gin, Jet Propulsion Lab. (United States)
Bruce Moision, Jet Propulsion Lab. (United States)
Kevin Quirk, Jet Propulsion Lab. (United States)
Malcolm Wright, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 7199:
Free-Space Laser Communication Technologies XXI
Hamid Hemmati, Editor(s)

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