Patent ID: 9735885
Date: 2017-08-15
CPC Classifications: B82Y,G01S,G02B,G02F,H01L,H01P,H01Q,H04B

Claim:
1. A coherent frequency modulated receiver for receiving and detecting optical signals, the receiver comprising; a. an electrically controllable optical beam scanner receiving optical signals arriving at different angles in a field of view of said electrically controllable optical beam scanner, said electrically controllable optical beam scanner conveying a scanned optical input beam as an output or reflected optical beam; b. a grating coupler responsive to the output or reflected optical beam of said electrically controllable optical beam scanner, said grating coupler having a waveguided output; c. an optical local oscillator laser having a waveguided output; d. a FMCW signal generator; e. an optical modulator responsive to the optical waveguided outputs of the optical local oscillator laser and also to an electrical FMCW signal from the FMCW signal generator; and f. a pair of second order non-linear optical elements for frequency upconverting respective outputs of the optical modulator and the grating coupler.