Patents by Inventor Charles X. Yu

Charles X. Yu 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).

  • Large-mode-area optical fibers and optical fiber amplifiers in the eye-safe regime
    Patent number: 11909166
    Abstract: The present technology provides large mode area optical fibers engineered to have normal dispersion around 1600 nm, enabling high power Raman amplification at eye safer wavelengths. The fibers can have a main core and one or more side cores disposed relative to the main core so that modes of the main core and the one or more side cores hybridize into supermodes with modified dispersion.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: February 20, 2024
    Assignee: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
    Inventors: Paul H. Pax, Jay W. Dawson, Victor V. Khitrov, Cody W. Mart, Michael J. Messerly, Michael Runkel, Charles X. Yu
  • 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
  • LARGE-MODE-AREA OPTICAL FIBERS AND OPTICAL FIBER AMPLIFIERS IN THE EYE-SAFE REGIME
    Publication number: 20210359484
    Abstract: The present technology provides large mode area optical fibers engineered to have normal dispersion around 1600 nm, enabling high power Raman amplification at eye safer wavelengths. The fibers can have a main core and one or more side cores disposed relative to the main core so that modes of the main core and the one or more side cores hybridize into supermodes with modified dispersion.
    Type: Application
    Filed: May 11, 2021
    Publication date: November 18, 2021
    Inventors: Paul H. Pax, Jay W. Dawson, Victor V. Khitrov, Cody W. Mart, Michael J. Messerly, Michael Runkel, 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