Patents by Inventor Wangsheng Zhang

Wangsheng Zhang 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).

  • Photosensor operating point
    Patent number: 8055138
    Abstract: The subject matter disclosed herein relates to determining a photosensor operating point.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: November 8, 2011
    Assignee: Applied Optoelectronics, Inc.
    Inventor: Wangsheng Zhang
  • PHOTOSENSOR OPERATING POINT
    Publication number: 20090196624
    Abstract: The subject matter disclosed herein relates to determining a photosensor operating point.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Inventor: Wangsheng Zhang
  • CONTROLLING OPTICAL SIGNAL TRANSMISSION TO REDUCE OPTICAL SIGNAL DEGRADATION
    Publication number: 20080031621
    Abstract: An optical transmission system and method may control optical signal transmission in an optical network, such as a passive optical network (PON), to reduce degradation of one or more optical signals traveling over the same optical waveguide. In particular, optical signal transmission may be controlled to reduce carrier to noise ratio (CNR) degradation of an optical signal (e.g., a multichannel video signal) resulting from the effects of stimulated Raman scattering (SRS) and/or double Rayleigh backscattering (DRBS). The CNR degradation may be reduced by controlling transmission of one or more of a plurality of optical signals in the optical network based on various parameters affecting the contribution to CNR degradation by SRS and/or DRBS and affecting the performance of the optical transmission system. The optical signal transmission may be controlled by adjusting a preemphasis and/or transmitted power of the optical signal(s).
    Type: Application
    Filed: July 26, 2007
    Publication date: February 7, 2008
    Applicant: APPLIED OPTOELECTRONICS, INC.
    Inventors: Chien-Yu Kuo, Wangsheng Zhang, Yu-Yun Shih, Chau-Hong Kuo