Patents by Inventor Grace D. Chern

Grace D. Chern 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).

  • Locally-outcoupled cavity resonator having unidirectional emission
    Patent number: 7031365
    Abstract: A locally-outcoupled optical resonator has whispering gallery modes existing in a nearly circular resonator. Light is outcoupled by providing a local perturbing feature on the perimeter of the locally-outcoupled cavity resonator. The perturbing feature provides an outcoupling or loss mechanism that asymmetrically interacts with circulating whispering gallery modes, thereby making the resonator capable of uni-directional output.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: April 18, 2006
    Assignee: Xerox Corporation
    Inventors: Michael A. Kneissl, Noble M. Johnson, David K. Biegelsen, Richard K. Chang, A. Douglas Stone, Grace D. Chern, Hakan E. Tureci, Joseph Zyss
  • Locally-outcoupled cavity resonator having unidirectional emission
    Publication number: 20040218654
    Abstract: A locally-outcoupled optical resonator has whispering gallery modes existing in a nearly circular resonator. Light is outcoupled by providing a local perturbing feature on the perimeter of the locally-outcoupled cavity resonator. The perturbing feature provides an outcoupling or loss mechanism that asymmetrically interacts with circulating whispering gallery modes, thereby making the resonator capable of uni-directional output.
    Type: Application
    Filed: May 2, 2003
    Publication date: November 4, 2004
    Applicant: Xerox Corporation
    Inventors: Michael A. Kneissl, Noble M. Johnson, David K. Biegelsen, Richard K. Chang, A. Douglas Stone, Grace D. Chern, Hakan E. Tureci, Joseph Zyss