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Proceedings Paper

C-RED 3: a SWIR camera for FSO applications
Author(s): J. L. Gach; David Boutolleau; Cecile Brun; Thomas Carmignani; Fabien Clop; Philippe Feautrier; Stephane Lemarchand; Eric Stadler; Yann Wanwanscappel
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Paper Abstract

Free space communications (FSO) is interesting for distant applications where high bandwidth is needed while using a fiber is not possible. However these links have to face several issues, and the most important one is the beam scintillation due to the propagation through a turbulent media, the atmosphere. Several mitigation strategies have been developed, but the best way to suppress scintillation is to use adaptive optics, widely used now in astronomy. The main difficulty for FSO is to probe the wavefront fast enough to have a good turbulence correction. This was not possible due to the lack of wavefront sensors working in the SWIR. C-RED 3 is a 640x512 SWIR camera running at 600FPS full frame and has the legacy of all the developments of astronomical infrared fast wavefront sensors on top of specific features for FSO (Low SWaP, Low Cost). We will present the performances of this new camera and demonstrate how it fulfills the needs of FSO adaptive optics.

Paper Details

Date Published: 2 March 2020
PDF: 8 pages
Proc. SPIE 11272, Free-Space Laser Communications XXXII, 112720F (2 March 2020); doi: 10.1117/12.2545823
Show Author Affiliations
J. L. Gach, First Light Imaging S.A.S. (France)
Aix Marseille Univ., CNRS, CNES, LAM (France)
David Boutolleau, First Light Imaging S.A.S. (France)
Cecile Brun, First Light Imaging S.A.S. (France)
Thomas Carmignani, First Light Imaging S.A.S. (France)
Fabien Clop, First Light Imaging S.A.S. (France)
Philippe Feautrier, First Light Imaging S.A.S. (France)
Univ. Grenoble Alpes, CNRS, IPAG (France)
Stephane Lemarchand, First Light Imaging S.A.S. (France)
Eric Stadler, First Light Imaging S.A.S. (France)
Univ. Grenoble Alpes, CNRS, IPAG (France)
Yann Wanwanscappel, First Light Imaging S.A.S. (France)


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

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