Patents by Inventor Utsav D. DAVE

Utsav D. DAVE 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).

  • Resonance-free light recycling in waveguides
    Patent number: 11256031
    Abstract: Light recycling within a waveguide is achieved by mode conversion instead of resonance. A structure is provided in in which light makes multiple passes through the same waveguide by converting the mode to a different mode after each pass and rerouting the light back into the same waveguide. The structure includes a bus waveguide and at least one mode converter device disposed at or adjacent each of two opposing ends of the bus waveguide, wherein each mode converter devices is configured to receive light having a receiving mode along a first direction and to cause light having a different mode from the receiving mode to propagate in a second direction opposite the first direction.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: February 22, 2022
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Michal Lipson, You-Chia Chang, Samantha P. Roberts, Brian Stern, Utsav D. Dave
  • RESONANCE-FREE LIGHT RECYCLING IN WAVEGUIDES
    Publication number: 20200225415
    Abstract: Light recycling within a waveguide is achieved by mode conversion instead of resonance. A structure is provided in in which light makes multiple passes through the same waveguide by converting the mode to a different mode after each pass and rerouting the light back into the same waveguide. The structure includes a bus waveguide and at least one mode converter device disposed at or adjacent each of two opposing ends of the bus waveguide, wherein each mode converter devices is configured to receive light having a receiving mode along a first direction and to cause light having a different mode from the receiving mode to propagate in a second direction opposite the first direction.
    Type: Application
    Filed: June 26, 2018
    Publication date: July 16, 2020
    Inventors: Michal LIPSON, You-Chia CHANG, Samantha P. ROBERTS, Brian STERN, Utsav D. DAVE