Patents by Inventor Niraj K. Inamdar

Niraj K. Inamdar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Photonic integrated circuit-based optical phased array calibration technique
    Patent number: 11988903
    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.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: May 21, 2024
    Assignee: Raytheon Company
    Inventors: Niraj K. Inamdar, Stephen P. Palese, Aaron B. Potter, Thomas R. Yengst
  • PHOTONIC INTEGRATED CIRCUIT-BASED OPTICAL PHASED ARRAY CALIBRATION TECHNIQUE
    Publication number: 20220252908
    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.
    Type: Application
    Filed: February 11, 2021
    Publication date: August 11, 2022
    Inventors: Niraj K. Inamdar, Stephen P. Palese, Aaron B. Potter, Thomas R. Yengst