Patent ID: 7995925

Claim:
An optical device for an optical beam receiving, comprising: 2 M optical elements, where M is integer ≧2, receiving portions of the optical beam; the optical elements forming a one-dimensional array positioned perpendicular to the projection of the optical beam propagation direction; 2 M input waveguides being connected to the optical elements; wherein the incoming optical beam wavefront is spatially divided into I sections across the wavefront each i th section has its own phase φ i depending on i th optical path from a transmitter to the optical device, wherein 2≦i≦1; each i th input waveguide receives i th portion of the optical beam from i th section across the beam wavefront; (2 M −1) couplers; each coupler is formed by two waveguides, coming in and out of the coupler; control means for changing an input phase of the optical beam portion before its coupling; and one output waveguide forming an input waveguide for a consequent optical coupler from (2 M −1) couplers; a final output waveguide from the last coupler guiding a final output beam of the device; and wherein the control means change the input phases to maximize the final output beam power.