Patents by Inventor Danzhu Wu

Danzhu Wu 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 communication systems and methods of operating such optical communication systems
    Patent number: 7577356
    Abstract: An optical communication system includes a first optical device including a transmission optical switch and a controller coupled to the transmission optical switch, and a second optical device coupled to the first optical device via each of a first fiber and a second fiber. The transmission optical switch is configured to operate in one of a first mode associated with the first fiber and a second mode associated with the second fiber based on control signals generated by the controller. Moreover, the controller is configured to perform a non-revertive switching operation on the transmission optical switch based on the satisfaction or the non-satisfaction of a predetermined condition or a plurality of predetermined conditions.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: August 18, 2009
    Assignee: Allied Telesis, Inc.
    Inventors: Karen Hovakimyan, Danzhu Wu
  • Optical communication systems and methods of operating such optical communication systems
    Patent number: 7447424
    Abstract: An optical communication system includes a first optical device including a transmission optical switch and a controller coupled to the transmission optical switch, and a second optical device coupled to the first optical device via each of a first fiber and a second fiber. The transmission optical switch is configured to operate in one of a first mode associated with the first fiber and a second mode associated with the second fiber based on control signals generated by the controller. Moreover, the controller is configured to perform a non-revertive switching operation on the transmission optical switch based on the satisfaction or the non-satisfaction of a predetermined condition or a plurality of predetermined conditions.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: November 4, 2008
    Inventors: Karen Hovakimyan, Danzhu Wu
  • OPTICAL COMMUNICATION SYSTEMS AND METHODS OF OPERATING SUCH OPTICAL COMMUNICATION SYSTEMS
    Publication number: 20080199178
    Abstract: An optical communication system includes a first optical device including a transmission optical switch and a controller coupled to the transmission optical switch, and a second optical device coupled to the first optical device via each of a first fiber and a second fiber. The transmission optical switch is configured to operate in one of a first mode associated with the first fiber and a second mode associated with the second fiber based on control signals generated by the controller. Moreover, the controller is configured to perform a non-revertive switching operation on the transmission optical switch based on the satisfaction or the non-satisfaction of a predetermined condition or a plurality of predetermined conditions.
    Type: Application
    Filed: April 18, 2008
    Publication date: August 21, 2008
    Inventors: Karen HOVAKIMYAN, Danzhu WU
  • Optical communication systems and methods of operating such optical communication systems
    Publication number: 20070104484
    Abstract: An optical communication system includes a first optical device including a transmission optical switch and a controller coupled to the transmission optical switch, and a second optical device coupled to the first optical device via each of a first fiber and a second fiber. The transmission optical switch is configured to operate in one of a first mode associated with the first fiber and a second mode associated with the second fiber based on control signals generated by the controller. Moreover, the controller is configured to perform a non-revertive switching operation on the transmission optical switch based on the satisfaction or the non-satisfaction of a predetermined condition or a plurality of predetermined conditions.
    Type: Application
    Filed: November 4, 2005
    Publication date: May 10, 2007
    Inventors: Karen Hovakimyan, Danzhu Wu