{"id":11342,"date":"2024-10-02T16:52:00","date_gmt":"2024-10-02T14:52:00","guid":{"rendered":"https:\/\/www.cailabs.com\/technical-publications-and-conferences\/"},"modified":"2026-02-10T14:31:31","modified_gmt":"2026-02-10T13:31:31","slug":"tilba-atmo-enhancing-leo-to-ground-downlinks-with-45-mode-turbulence-mitigation","status":"publish","type":"publication","link":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/tilba-atmo-enhancing-leo-to-ground-downlinks-with-45-mode-turbulence-mitigation\/","title":{"rendered":"TILBA-ATMO: enhancing LEO-to-ground downlinks with 45-mode turbulence mitigation"},"content":{"rendered":"\n

Auteurs: Antonin Billaud, Clara Abbouab, C\u00e9dric Dautancourt, Julien Samaan, Guillaume Larch\u00e9, Laure
Etchegoinberry, Claire Autebert, Guillaume Labroille, Pu Jian<\/strong><\/p>\n\n\n\n

Cailabs, Rennes, FRANCE<\/p>\n\n\n\n

Abstract<\/strong><\/p>\n\n\n\n

Cet article pr\u00e9sente TILBA\u00ae-ATMO<\/a>, une technologie de communication optique d\u00e9velopp\u00e9e par Cailabs pour am\u00e9liorer les liaisons descendantes satellite sol en orbite basse face aux effets de la turbulence atmosph\u00e9rique<\/a>.<\/p>\n\n\n\n

Bas\u00e9e sur la technologie de conversion de lumi\u00e8re multi plans, la solution permet de d\u00e9multiplexer un faisceau turbulent en plusieurs fibres monomodes, puis de les recombiner activement afin de restaurer un signal optique de haute qualit\u00e9. Cette approche rend possible l\u2019utilisation de d\u00e9tecteurs rapides, de composants fibr\u00e9s et de sch\u00e9mas de modulation avanc\u00e9s, habituellement incompatibles avec des conditions de forte turbulence.<\/p>\n\n\n\n

Les performances du syst\u00e8me sont d\u00e9montr\u00e9es exp\u00e9rimentalement \u00e0 l\u2019aide d\u2019une architecture MPLC \u00e0 45 modes de type Hermite Gauss, dans des conditions r\u00e9alistes de turbulence, caract\u00e9ris\u00e9es par un rapport D sur r0 \u00e9gal \u00e0 7 et des vitesses de turbulence \u00e9lev\u00e9es.<\/p>\n\n\n\n

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Plus d’informations<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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