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Pre-correction adaptive optics performance for a 10 km laser link
Author(s): Rudolf Saathof; Remco den Breeje; Wimar Klop; Niek Doelman; Thijs Moens; Michael Gruber; Tjeerd Russchenberg; Federico Pettazzi; Jet Human; Ramon Mata Calvo; Juraj Poliak; Ricardo Barrios; Matthias Richerzhagen; Ivan Ferrario
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Paper Abstract

For the next generation of very high throughput communication satellites, free-space optical (FSO) communication between ground stations and geostationary telecommunication satellites is likely to replace conventional RF links. To mitigate atmospheric turbulence, TNO and DLR propose Adaptive Optics (AO) to apply uplink pre-correction. In order to demonstrate the feasibility of AO pre-correction an FSO link has been tested over a 10 km range. This paper shows that AO pre-correction is most advantageous for low point ahead angles (PAAs), as expected. In addition, an optimum AO precorrection performance is found at 16 AO modes for the experimental conditions. For the specific test site, tip-tilt precorrection accounted for 4.5 dB improvement in the link budget. Higher order AO modes accounted for another 1.5 dB improvement in the link budget. From these results it is concluded that AO pre-correction can effectively improve high-throughput optical feeder links.

Paper Details

Date Published: 25 March 2019
PDF: 7 pages
Proc. SPIE 10910, Free-Space Laser Communications XXXI, 109101H (25 March 2019); doi: 10.1117/12.2506849
Show Author Affiliations
Rudolf Saathof, TNO (Netherlands)
Remco den Breeje, TNO (Netherlands)
Wimar Klop, TNO (Netherlands)
Niek Doelman, TNO (Netherlands)
Leiden Univ. (Netherlands)
Thijs Moens, TNO (Netherlands)
Michael Gruber, TNO (Netherlands)
Tjeerd Russchenberg, TNO (Netherlands)
Federico Pettazzi, TNO (Netherlands)
Jet Human, TNO (Netherlands)
Ramon Mata Calvo, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Juraj Poliak, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Ricardo Barrios, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Matthias Richerzhagen, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Ivan Ferrario, TNO (Netherlands)

Published in SPIE Proceedings Vol. 10910:
Free-Space Laser Communications XXXI
Hamid Hemmati; Don M. Boroson, Editor(s)

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