Adaptive optics pre-correction for optical feeder links

Breadboard performance

Conference paper (2018)

Authors

Juraj Poliak Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Ricardo Barrios Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Matthias Richerzhagen Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Niek J. Doelman Universiteit Leiden, TNO
Jet Human TNO
Ramon Mata Calvo Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Affiliation
External organisation
More Info
expand_more

Published Date

2018

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Affiliation

External organisation

Abstract

For the next generation of very high throughput communication satellites, TNO and DLR envision optical free-space communication between ground stations and geostationary telecommunication satellites to replace the traditional RF links. To mitigate atmospheric turbulence, an Adaptive Optics (AO) system will be used to apply uplink pre-correction. OFELIA, an ground terminal breadboard was developed to demonstrate the pre-correction principle over an realistic link. Currently, integration tests have been performed to verify the AO performance. Also a laser link experiment over 10 km distance has already been established, in a scenario relevant to ground-to-satellite links. The paper shows that AO is clearly beneficial for the downlink performance. In addition the first preliminary experimental results of the pre-correction show it is also beneficial for the uplink.