Patents by Inventor Xiaotian S. Yao

Xiaotian S. Yao 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).

  • Non-spherical whispering-gallery-mode microcavity
    Patent number: 6795481
    Abstract: Devices based on a non-spherical whispering-gallery-mode optical resonator.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: September 21, 2004
    Assignee: California Institute of Technology
    Inventors: Lutfollah Maleki, Xiaotian S. Yao, Vladimir Ilchenko
  • Fiber-coupled microsphere laser
    Patent number: 6487233
    Abstract: A fiber-coupled laser based on a whispering-gallery-mode resonator formed of a laser gain medium and an angle-polished fiber coupler.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: November 26, 2002
    Assignee: California Institute of Technology
    Inventors: Lutfollah Maleki, Xiaotian S. Yao, Vladimir Ilchenko
  • Non-spherical whispering-gallery-mode microcavity
    Publication number: 20020018611
    Abstract: Devices based on a non-spherical whispering-gallery-mode optical resonator.
    Type: Application
    Filed: March 22, 2001
    Publication date: February 14, 2002
    Inventors: Lutfollah Maleki, Xiaotian S. Yao, Vladimir Ilchenko
  • Fiber-coupled microsphere laser
    Publication number: 20010038651
    Abstract: A fiber-coupled laser based on a whispering-gallery-mode resonator formed of a laser gain medium and an angle-polished fiber coupler.
    Type: Application
    Filed: February 23, 2001
    Publication date: November 8, 2001
    Inventors: Lutfollah Maleki, Xiaotian S. Yao, Vladimir Ilchenko
  • Multi-Loop opto-electronic microwave oscillator with a wide tuning range
    Patent number: 5777778
    Abstract: A versatile photonic radio frequency (RF) oscillator employs multiple feedback loops of different delay times, including at least one optical feedback loop, to generate RF signals with ultra low phase noise, narrow spectral linewidth, and a continuous wide tuning range of high resolution. Specifically, an electro-optical modulator and a long optical fiber loop are implemented in one dual-loop system. In addition, a light beam from a light source can be directly modulated by using feedback signals from multi feedback loops to alter the electrical control signal to the light source. Furthermore, the disclosed system supports both electrical and optical RF outputs. External optical injection and electrical injection can be implemented.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: July 7, 1998
    Assignee: California Institute of Technology
    Inventor: Xiaotian S. Yao