Patents by Inventor Xiaotian Yao

Xiaotian 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).

  • Optical Instrument and Measurements Using Multiple Tunable Optical Polarization Rotators
    Publication number: 20080030839
    Abstract: Devices and techniques for generating and analyzing states of polarization in light using multiple adjustable polarization rotators in various applications.
    Type: Application
    Filed: May 15, 2007
    Publication date: February 7, 2008
    Applicant: GENERAL PHOTONICS CORPORATION
    Inventor: Xiaotian Yao
  • Monitoring mechanisms for optical systems
    Publication number: 20050201751
    Abstract: This application describes optical monitoring devices and applications in optical systems for monitoring various optical parameters of light, including the signal to noise ratio, the degree of polarization, and the differential group delay (DGD).
    Type: Application
    Filed: March 12, 2004
    Publication date: September 15, 2005
    Inventor: Xiaotian Yao
  • Devices based on optical waveguides with adjustable bragg gratings
    Publication number: 20050041922
    Abstract: A system for filtering light propagating in a waveguide is described. The system utilizes an adjustable periodic grating which induces mode coupling of predetermined frequencies of light propagating in the waveguide.
    Type: Application
    Filed: September 21, 2004
    Publication date: February 24, 2005
    Inventor: Xiaotian Yao