Coherent Semiconductor Laser Systems For Optical Intersatellite Links

R. J. Somerset; G. D. Fletcher

doi:10.1117/12.969705

1 April 1990 Coherent Semiconductor Laser Systems For Optical Intersatellite Links

R. J. Somerset, G. D. Fletcher

Proceedings Volume 1191, Optical Systems for Space and Defence; (1990) https://doi.org/10.1117/12.969705
Event: SIRA/Optical Systems for Space and Defence, 1989, London, United Kingdom

Abstract

Semiconductor laser based optical intersatellite links are attractive for use in both DRS type applications, and as links in the existing satellite-based telecommunications networks (for example between EUTELSAT SMS and INTELSAT IBS business services satellites). Initial ISL experiments will demonstrate direct detection systems using intensity modulation. Coherent systems offer significant improvements over these: the use of frequency shift keying modulation and heterodyne receivers provide significantly improved system sensitivities, which will allow practical systems with reliable laser sources (50 mW CW), and small optical telescopes (20 cm diameter). The SILEX ADD-ON CHANNEL is intended to demonstrate the potential of such systems within the framework of the ESA SILEX program.

Citation Download Citation

R. J. Somerset and G. D. Fletcher "Coherent Semiconductor Laser Systems For Optical Intersatellite Links", Proc. SPIE 1191, Optical Systems for Space and Defence, (1 April 1990); https://doi.org/10.1117/12.969705

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