Patents by Inventor Sarvagya Paavan DWIVEDI

Sarvagya Paavan DWIVEDI 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).

  • Tunable waveguide grating with a heating layer
    Patent number: 11619785
    Abstract: An optical device including a waveguide grating is disclosed. The optical device may be used as an optical cavity for a laser device, for instance, of an integrated laser device for light detection and ranging (Lidar) applications. In one aspect, the optical device includes a waveguide grating for guiding light, a heating layer provided beneath or above the waveguide grating, and two or more contacts for passing a current through the heating layer, to generate heat in the heating layer. The heating layer is thermally coupled to the waveguide grating and is optically decoupled from the waveguide grating.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: April 4, 2023
    Assignee: IMEC vzw
    Inventors: Charles Caer, Sarvagya Paavan Dwivedi
  • TUNABLE WAVEGUIDE GRATING WITH A HEATING LAYER
    Publication number: 20220057581
    Abstract: An optical device including a waveguide grating is disclosed. The optical device may be used as an optical cavity for a laser device, for instance, of an integrated laser device for light detection and ranging (Lidar) applications. In one aspect, the optical device includes a waveguide grating for guiding light, a heating layer provided beneath or above the waveguide grating, and two or more contacts for passing a current through the heating layer, to generate heat in the heating layer. The heating layer is thermally coupled to the waveguide grating and is optically decoupled from the waveguide grating.
    Type: Application
    Filed: August 17, 2021
    Publication date: February 24, 2022
    Inventors: Charles Caer, Sarvagya Paavan DWIVEDI