Patents by Inventor Cavour Yeh

Cavour Yeh 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).

  • Method and apparatus for low-loss signal transmission
    Patent number: 7315678
    Abstract: The present invention relates to the field of radio-frequency (RF) waveguides. More specifically, the present invention pertains to a method and apparatus that provides ultra-low-loss RF waveguide structures targeted between approximately 300 GHz and approximately 30 THz. The RF waveguide includes a hollow core and a flexible honeycomb, periodic-bandgap structure surrounding the hollow core. The flexible honeycomb, periodic-bandgap structure is formed of a plurality of tubes formed of a dielectric material such as of low-loss quartz, polyethylene, or high-resistivity silicon. Using the RF waveguide, a user may attach a terahertz signal source to the waveguide and pass signals through the waveguide, while a terahertz signal receiver receives the signals.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: January 1, 2008
    Assignee: California Institute Of Technology
    Inventors: Peter Siegel, Cavour Yeh, Fred Shimabukuro, Scott Fraser
  • Method and apparatus for low-loss signal transmission
    Publication number: 20060165360
    Abstract: The present invention relates to the field of radio-frequency (RF) waveguides. More specifically, the present invention pertains to a method and apparatus that provides ultra-low-loss RF waveguide structures targeted between approximately 300 GHz and approximately 30 THz. The RF waveguide includes a hollow core and a flexible honeycomb, periodic-bandgap structure surrounding the hollow core. The flexible honeycomb, periodic-bandgap structure is formed of a plurality of tubes formed of a dielectric material such as of low-loss quartz, polyethylene, or high-resistivity silicon. Using the RF waveguide, a user may attach a terahertz signal source to the waveguide and pass signals through the waveguide, while a terahertz signal receiver receives the signals.
    Type: Application
    Filed: December 13, 2005
    Publication date: July 27, 2006
    Inventors: Peter Siegel, Cavour Yeh, Fred Shimabukuro, Scott Fraser
  • Wavelength division multiplexed optical solitons
    Patent number: 6612743
    Abstract: A technique of setting powers and shape of beams to allow optical solitons to exist on WDM beams in fibers.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: September 2, 2003
    Assignee: California Institute of Technology
    Inventors: Cavour Yeh, Larry A. Bergman
  • Efficient radiation coupling to quantum-well radiation-sensing array via evanescent waves
    Patent number: 6271526
    Abstract: Devices and techniques for using a prism to couple IR radiation to a quantum-well sensor with a polarization substantially perpendicular to the quantum-well layers.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: August 7, 2001
    Assignee: California Institute of Technology
    Inventors: Thomas Cwik, Cavour Yeh
  • Fiber distributed feedback laser
    Patent number: 3958188
    Abstract: Utilizing round optical fibers as communication channels in optical communication networks presents the problem of obtaining a high efficiency coupling between the optical fiber and the laser. A laser is made an integral part of the optical fiber channel by either diffusing active material into the optical fiber or surrounding the optical fiber with the active material. Oscillation within the active medium to produce lasing action is established by grating the optical fiber so that distributed feedback occurs.
    Type: Grant
    Filed: December 11, 1974
    Date of Patent: May 18, 1976
    Inventors: James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher, Charles Elachi, Gary A. Evans, Cavour Yeh