Patents by Inventor Chris I. Walker

Chris I. Walker 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).

  • Segmented waveguide structures
    Patent number: 7315679
    Abstract: Various embodiment comprise silicon-on-insulator waveguide designs that simultaneously achieve both high optical confinement, low-loss, and provide for electrical connections. In certain embodiments, high index contrast waveguides comprise a central elongate waveguide portion and a segmented portion comprising a single thin layer of Silicon-On-Insulator that achieves both high optical confinement and minimal insertion loss. Other devices, such as chemical and biological sensors, and optical elements may also be fabricated.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: January 1, 2008
    Assignee: California Institute of Technology
    Inventors: Michael J. Hochberg, Tom Baehr-Jones, Chris I. Walker, Jeremy Witzens, Lawrence C. Gunn, Axel Scherer