System for compensating for the distortion of a wavefront of an incident light beam

A compensating system for compensating for distortion of a wavefront of at least part of an incident light beam, the compensating system comprising:

• an adaptive optic comprising an active surface configured to receive the at least part of the incident light beam and provide, via reflection from the active surface, a corrected light beam;
• a mode splitter disposed in a propagation path of the corrected light beam, configured to provide a plurality of output light beams conforming to a family of target modes, the mode splitter comprising a plurality of microstructured zones disposed on at least one optical element configured to spatially intercept and modify the corrected light beam, during a plurality of reflections or transmission from the plurality of microstructured zones separated by a free propagation;
• a photonic device optically coupled to the mode splitter, the photonic device being configured to provide:
• i. a useful light beam representative of the corrected light beam, from the plurality of output light beams, the useful light beam being intended in to be transmitted to an optical receiver;
• and
• ii. mode characteristics representative of characteristics of the plurality of output light beams;
• and
• a controller of the adaptive optic, connected to the photonic device and to the adaptive optic, the controller being configured to, from the mode characteristics, adjust deformation of the active surface.