Multiple-wavelength free-space laser communications

Robert Purvinskis; Dirk Giggenbach; Hennes Henniger; Nicolas Perlot; Florian David

doi:10.1117/12.478932

3 July 2003 Multiple-wavelength free-space laser communications

Robert Purvinskis, Dirk Giggenbach, Hennes Henniger, Nicolas Perlot, Florian David

Proceedings Volume 4975, Free-Space Laser Communication Technologies XV; (2003) https://doi.org/10.1117/12.478932
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States

Abstract

Free-space optical communications systems in the atmosphere, based on intensity modulation and direct detection, are heavily affected by fading caused by turbulence cells of varying scale and motion. Several data sets of fading measurements under different scenarios have been recorded demonstrating this effect. In this paper we introduce a form of free-space laser communications involving a source operating on several wavelengths. The goal is to overcome atmospheric interference on a communications link. We have performed simulations using the DLR PILab Matlab toolbox. These indicate the extent to which the turbulence and beam properties interact. Experimental investigations are planned. Further properties are also taken into account, including the choice of appropriate laser bandwidth and wavelengths, the effect of atmospheric absorption from aerosols and molecular absorption lines, as well as effects of atmospheric structure on beam propagation. Possible scenarios for application of this scheme will be presented as well.

Citation Download Citation

Robert Purvinskis, Dirk Giggenbach, Hennes Henniger, Nicolas Perlot, and Florian David "Multiple-wavelength free-space laser communications", Proc. SPIE 4975, Free-Space Laser Communication Technologies XV, (3 July 2003); https://doi.org/10.1117/12.478932

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