Patent ID: 11947101
Assignee: ECOLE CENTRALE DE MARSEILLE
Field: Optics (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A device for transporting and controlling light beams, comprising:
a light guide comprising a bundle of uncoupled single-mode optical fibers, each single-mode optical fiber being intended to receive an elementary light beam at a proximal end and to emit a light beam at a distal end, said bundle of single-mode optical fibers comprising, in operation, a minimum radius of curvature corresponding to a maximum curvature of the bundle of fibers;
an optical device for phase controlling, said device being arranged on the side of the proximal end of the light guide and comprising:
at least a first spatial light modulator suitable for applying a phase shift to each of the elementary beams;
a control unit for controlling the first spatial light modulator, said control unit being configured to apply a phase shift to each of the elementary beams so as to form, at the distal end of the light guide, an illumination beam with a predefined phase function,

and wherein said bundle of single-mode optical fibers is twisted, and comprises a twist period defined to preserve said phase function at the distal end of the light guide when the bundle of single-mode optical fibers is subjected to a curvature lower than said maximum curvature.