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  4. Adaptive optics for daytime deep-space optical communications
 
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2022
Conference Paper
Titel

Adaptive optics for daytime deep-space optical communications

Abstract
In deep-space optical communications, one particular challenge encountered at the ground receiver side are the wavefront deformations caused by atmospheric turbulence. This gives rise to reduced signal-to-background ratios and signal fades, especially during daytime links. Background rejection is therefore a fundamental requirement for optical links operating in the low-photon-count regime during the day. Both, spectral and spatial filtering subsystems are essential for this application. To this end, we have analyzed several wavefront sensing modalities including: Shack-Hartmann wavefront sensor, holographic wavefront sensing, and wavefront sensorless adaptive optics. The insights gained through simulations were used to drive the design of the laboratory-based demonstrator, which exhibited very similar performance improvements due to high-order correction as in the simulations, despite noise levels of the same magnitude as the signal.
Author(s)
Gladysz, Szymon
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
Zepp, Andreas
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
Bellossi, Raphael
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
Segel, Max
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
McDonald, Douglas
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
Stein, Karin
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
Hauptwerk
Laser Communication and Propagation through the Atmosphere and Oceans XI
Konferenz
Conference "Laser Communication and Propagation through the Atmosphere and Oceans" 2022
Thumbnail Image
DOI
10.1117/12.2633036
Language
English
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Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB
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