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

Details Demonstration of a high-efficiency free-space optical communications link Demonstration of a high-efficiency free-space optical communications link

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spie.7199e...8b&link_type=abstract

Free-Space Laser Communication Technologies XXI. Edited by Hemmati, Hamid. Proceedings of the SPIE, Volume 7199 (2009)., pp. 71

Computer Science

Performance

Scientific paper

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.

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