公开(公告)号：US11988903B2

公开(公告)日：2024-05-21

申请号：US17174197

申请日：2021-02-11

Applicant: Raytheon Company

Inventor： Niraj K. Inamdar ,  Stephen P. Palese ,  Aaron B. Potter ,  Thomas R. Yengst

IPC: G02F1/01 ,  G01N21/88 ,  G02F1/29 ,  H01Q3/26 ,  H04B10/11 ,  H04B10/112 ,  H04B10/40

CPC classification number: G02F1/0147 ,  G01N21/8806 ,  G02F1/292 ,  H01Q3/267 ,  H01Q3/2676 ,  H04B10/11 ,  H04B10/112 ,  G02F2203/50 ,  H04B10/40

Abstract: A method includes generating a mixed optical beam using an optical phased array that includes multiple array elements, where each array element includes an antenna element and a phase modulator. The mixed optical beam includes a combination of (i) an output optical beam produced by the optical phased array and (ii) a reference optical beam. The method also includes capturing near-field measurements of the mixed optical beam, where the near-field measurements are captured while scanning phase angles of the phase modulators. The method further includes generating calibration data based on the near-field measurements, where the calibration data identifies phase and amplitude responses of the array elements. In addition, the method includes storing the calibration data.

公开(公告)号：US20220252908A1

公开(公告)日：2022-08-11

申请号：US17174197

申请日：2021-02-11

Applicant: Raytheon Company

Inventor： Niraj K. Inamdar ,  Stephen P. Palese ,  Aaron B. Potter ,  Thomas R. Yengst

IPC: G02F1/01 ,  G01N21/88

Abstract: A method includes generating a mixed optical beam using an optical phased array that includes multiple array elements, where each array element includes an antenna element and a phase modulator. The mixed optical beam includes a combination of (i) an output optical beam produced by the optical phased array and (ii) a reference optical beam. The method also includes capturing near-field measurements of the mixed optical beam, where the near-field measurements are captured while scanning phase angles of the phase modulators. The method further includes generating calibration data based on the near-field measurements, where the calibration data identifies phase and amplitude responses of the array elements. In addition, the method includes storing the calibration data.