Patents by Inventor Robert P. Crist

Robert P. Crist 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).

  • Wavelength selective transfer of optical energy
    Patent number: 11460639
    Abstract: An all fiber wavelength selective coupler provides wavelength selective transfer of optical energy between two or more separated waveguides. The coupler includes signal cores that are separated enough that they can be fusion spliced to standard fibers as lead-in and lead-out pigtails. A bridge between the signal cores facilitates transfer of the optical energy through a process of evanescent coupling. In one example, the bridge is formed of a series of graded index cores.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: October 4, 2022
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Graham S. Allen, Diana C. Chen, Matthew J. Cook, Robert P. Crist, Derrek R. Drachenberg, Jay W. Dawson, Victor V. Khitrov, Leily Kiani, Michael J. Messerly, Paul H. Pax, Nick Schenkel
  • Non-circular optical fiber and mode shape converter and method
    Patent number: 11340396
    Abstract: A class of fibers is described that have a non-circular cross section on one or both ends that can by optimized to capture the optical radiation from a laser diode or diode array and deliver the light in the same or different shape on the opposite end of the fiber. A large multimode rectangular waveguide may be provided which can accept the radiation from a high-power diode bar and transform it into a circular cross section on the opposite end, while preserving brightness.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: May 24, 2022
    Assignee: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
    Inventors: Derrek R. Drachenberg, Graham S. Allen, Diana C. Chen, Matthew J. Cook, Robert P. Crist, Jay W. Dawson, Leily Kiani, Michael J. Messerly, Paul H. Pax, Nick Schenkel, Charles X. Yu
  • Non-Circular Optical Fiber and Mode Shape Converter and Method
    Publication number: 20200132925
    Abstract: A class of fibers is described that have a non-circular cross section on one or both ends that can by optimized to capture the optical radiation from a laser diode or diode array and deliver the light in the same or different shape on the opposite end of the fiber. A large multimode rectangular waveguide may be provided which can accept the radiation from a high-power diode bar and transform it into a circular cross section on the opposite end, while preserving brightness.
    Type: Application
    Filed: July 5, 2018
    Publication date: April 30, 2020
    Applicant: Lawrence Livermore National Security, LLC
    Inventors: Derrek R. Drachenberg, Graham S. Alien, Diana C. Chen, Matthew J. Cook, Robert P. Crist, Jay W. Dawson, Leily Kiani, Michael J. Messerly, Paul H. Pax, Nick Schenkel, Charles X. Yu, Victor V. Khitrov
  • WAVELENGTH SELECTIVE TRANSFER OF OPTICAL ENERGY
    Publication number: 20190310420
    Abstract: An all fiber wavelength selective coupler provides wavelength selective transfer of optical energy between two or more separated waveguides. The coupler includes signal cores that are separated enough that they can be fusion spliced to standard fibers as lead-in and lead-out pigtails. A bridge between the signal cores facilitates transfer of the optical energy through a process of evanescent coupling. In one example, the bridge is formed of a series of graded index cores.
    Type: Application
    Filed: June 18, 2019
    Publication date: October 10, 2019
    Applicant: Lawrence Livermore National Security, LLC
    Inventors: Graham S. Allen, Diana C. Chen, Matthew J. Cook, Robert P. Crist, Derrek R. Drachenberg, Jay W. Dawson, Victor V. Khitrov, Leily Kiani, Michael J. Messerly, Paul H. Pax, Nick Schenkel