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Proceedings Paper

Optimal coherent beam combining based on Multi-Plane Light Conversion for high throughput optical feeder links (Conference Presentation)
Author(s): Antonin Billaud; Fausto Gomez; David Allioux; Nicolas Laurenchet; Pu Jian; Olivier Pinel; Guillaume Labroille

Paper Abstract

Free-space optical links are being considered for high throughput feeder links in satellite communication. Optical power up to 500 W is required at the optical ground terminal, which represents a challenge for current technologies. One way to scale power whilst preserving beam quality is coherent beam combining. Here, we present a novel technique based on Multi-Plane Light Conversion, consisting in a spatial multiplexer whose output modes form a Gaussian beam when superimposed constructively. The beam combiner is fully reflective, enabling kW optical power. We demonstrate a mode purity and a total efficiency higher than the conventional tiled apertures technique.

Paper Details

Date Published: 9 March 2020
Proc. SPIE 11272, Free-Space Laser Communications XXXII, 112720Y (9 March 2020); doi: 10.1117/12.2545634
Show Author Affiliations
Antonin Billaud, CAILabs (France)
Fausto Gomez, CAILabs (France)
David Allioux, CAILabs (France)
Nicolas Laurenchet, CAILabs (France)
Pu Jian, CAILabs (France)
Olivier Pinel, CAILabs (France)
Guillaume Labroille, CAILabs (France)

Published in SPIE Proceedings Vol. 11272:
Free-Space Laser Communications XXXII
Hamid Hemmati; Don M. Boroson, Editor(s)

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