US 12,074,639 B2
Methods, systems and devices for free-space optical communications
Alberto Comin, Munich (DE); Thomas Multerer, Taufkirchen (DE); Andrew A. Anderson, Münchsmünster (DE); Jan Tepper, Munich (DE); Bernd Schleicher, Ebersberg (DE); Andreas Drexler, Munich (DE); Alejandro Gimeno Martín, Munich (DE); and Kevin Shortt, Munich (DE)
Assigned to Airbus (S.A.S.), Blagnac (FR)
Filed by AIRBUS (S.A.S.), Blagnac (FR)
Filed on Jun. 8, 2022, as Appl. No. 17/835,042.
Application 17/835,042 is a continuation of application No. PCT/EP2020/085327, filed on Dec. 9, 2020.
Claims priority of application No. 19216073.7 (EP), filed on Dec. 13, 2019.
Prior Publication US 2022/0393761 A1, Dec. 8, 2022
Int. Cl. H04B 10/11 (2013.01)
CPC H04B 10/11 (2013.01) 10 Claims
OG exemplary drawing
 
1. A flat optical terminal comprising:
a plurality of functional layers in a layer stack, with each functional layer implementing a different function of optical compensation and beam processing, the layer stack comprising:
a first layer including an optical phase array;
a second layer stacked on top of the first layer including a liquid crystal modulator or an array of micro-electromechanical elements; and
a third layer stacked on top of the second layer including a polarization grating.