Patents by Inventor Weiszhen Yan

Weiszhen Yan 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).

  • AVERAGE LENGTH MAGNITUDE DETECTING APPARATUS, AND METHOD
    Publication number: 20120076491
    Abstract: The present invention relates to an average length magnitude detecting apparatus and method, and an optical coherent receiver. The average length magnitude detecting method is adopted for detecting whether an average length of an averager used by a polarization crosstalk canceling apparatus in a receiver is long or short, comprising: determining a magnitude of a residual polarization crosstalk coefficient of the receiver; and determining an index that indicates whether the average length of the averager is long or short according to the determined magnitude of the residual polarization crosstalk coefficient.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 29, 2012
    Applicant: Fujitsu Limited
    Inventors: Weiszhen Yan, Zhenning Tao, Lei Li