Field test demonstration of Adaptive Optics pre-correction for a Terabit Optical Communication Feeder Link

K. A. Broekens*, N. J. Doelman, W. A. Klop, F. Silvestri, G. C. Do Amaral, Y. Vos, E. P. Veldhuis, C. W. Korevaar, R. Saathof, More Authors

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

A 10 km ground-To-ground field test of a Terabit/s Optical Feeder Link demonstrator has been carried out. The demonstrator aimed for end-To-end communication performance with the use of Adaptive Optics pre-correction to mitigate the atmospheric turbulence disturbances of the FSO channel. It further includes the multiplexing of multiple uplink channels and RF end-To-end modems to prove the technical feasibility of supporting a Terabit/s communication link. The field test-performed in July 2022-demonstrates error free communication for over 10 minutes. This achievement proves the feasibility of a digital transparent communication architecture for the Terabit/s Feeder link application. The field test results are presented jointly with a companion paper [1] which focusses on the communication aspects. The Adaptive Optics (AO) pre-correction performance is analyzed against the atmospheric turbulence strength and the number of corrected AO modes. The encountered turbulence conditions during the field test caused irradiance fluctuations in the strong fluctuation regime. The field test results show a significant AO wavefront error correction on the downlink. For the uplink irradiance levels, a modest advantage of pre-correcting higher wavefront modes is found against the pre-correction of only the tip-Tilt modes. Finally, with respect to the uplink fading characteristics, the AO pre-correction leads to a reduction of the mean-fade time of approximately 20-30%, compared to AO tip-Tilt pre-correction only.

Original languageEnglish
Title of host publication2023 IEEE International Conference on Space Optical Systems and Applications, ICSOS 2023
PublisherIEEE
Pages175-181
Number of pages7
ISBN (Electronic)9798350307900
DOIs
Publication statusPublished - 2023
Event2023 IEEE International Conference on Space Optical Systems and Applications, ICSOS 2023 - Vancouver, Canada
Duration: 11 Oct 202313 Oct 2023

Publication series

Name2023 IEEE International Conference on Space Optical Systems and Applications, ICSOS 2023

Conference

Conference2023 IEEE International Conference on Space Optical Systems and Applications, ICSOS 2023
Country/TerritoryCanada
CityVancouver
Period11/10/2313/10/23

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • adaptive optics
  • deformable mirror
  • ground-To-ground link demonstrator
  • Optical satellite communication
  • pre-correction
  • RF end-To-end transparent optical communication
  • wave front sensor

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