Patents by Inventor Xuxing Zhao

Xuxing Zhao 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).

  • Two-fiber optical shared protection ring with a bi-directional 4×4 optical switch fabric
    Patent number: 6771852
    Abstract: The present invention is directed to a protection switch for use in a node of a two-fiber optical shared protection ring. The two-fiber optical shared protection ring propagates at least one bi-directional channel. Each bi-directional channel includes a working first wavelength signal and a working second wavelength signal. One fiber in the two-fiber optical channel shared protection ring propagates the working first wavelength signal in a first direction and the other fiber in the two-fiber optical channel shared protection ring propagating the working second wavelength signal in a second direction opposite the first direction. The switch includes an N×N optical switch fabric system disposed in the node. The N×N optical switch fabric includes 2N input/output (I/O) ports, wherein N is four, or an integer multiple of four. Each optical switch fabric is configured to switch at least one bi-directional channel. At least N three-port optical devices are coupled to N of the I/O ports.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: August 3, 2004
    Assignee: Corning Incorporated
    Inventors: Roe Hemenway, Izudin Lelic, Ming-Jun Li, Mark J. Soulliere, Daniel J. Tebben, Xuxing Zhao
  • Two-fiber optical shared protection ring with a bi-directional 4 x 4 optical switch fabric
    Publication number: 20030128978
    Abstract: The present invention is directed to a protection switch for use in a node of a two-fiber optical shared protection ring. The two-fiber optical shared protection ring propagates at least one bi-directional channel. Each bi-directional channel includes a working first wavelength signal and a working second wavelength signal. One fiber in the two-fiber optical channel shared protection ring propagates the working first wavelength signal in a first direction and the other fiber in the two-fiber optical channel shared protection ring propagating the working second wavelength signal in a second direction opposite the first direction. The switch includes an N×N optical switch fabric system disposed in the node. The N×N optical switch fabric includes 2N input/output (I/O) ports, wherein N is four, or an integer multiple of four. Each optical switch fabric is configured to switch at least one bi-directional channel. At least N three-port optical devices are coupled to N of the I/O ports.
    Type: Application
    Filed: April 5, 2002
    Publication date: July 10, 2003
    Applicant: Corning, Inc.
    Inventors: Roe Hemenway, Izudin Lelic, Ming-Jun Li, Mark J. Soulliere, Daniel J. Tebben, Xuxing Zhao