Pre-correction adaptive optics performance of a 10 km laser link
- 1Niederländische Organisation für Angewandte Naturwissenschaftliche Forschung (TNO), Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek (Niederlande)
- 2Institut für Kommunikation und Navigation, Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Michael [dot] Gruber [at] tno [dot] nl
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. We show that AO pre-correction is most advantageous for low point ahead angles (PAAs), as expected. In addition, an optimum AO pre-correction performance is found at 16 AO modes for the experimental conditions. For the specific test site, tip-tilt pre-correction 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.
@inproceedings{saathof2019b34,
author = {Saathof, Rudolf and den Breeje, Remco and Klop, Wimar and Doelman, Niek and Moens, Thijs and Gruber, Matthias and Russchenberg, Tjeerd and Pettazzi, Federico and Human, Jet and Calvo, Ramon and Poliak, Juraj and Barrios, Ricardo and Richerzhagen, Mathias and Ferrario, Ivan},
title = {{Pre-correction adaptive optics performance of a 10 km laser link}},
booktitle = {DGaO-Proceedings 2019},
series = {DGaO-Proceedings},
eventtitle = {120. Jahrestagung der DGaO},
eventdate = {2019-06-12/2019-06-15},
venue = {Darmstadt},
publisher = {Deutsche Gesellschaft für angewandte Optik e.V.},
year = {2019},
pages = {B34},
url = {https://dgao-proceedings.de/paper/120-b34}
}