Patents by Inventor Ruibin Jin

Ruibin Jin 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).

  • Carrier recovery in a coherent optical receiver
    Patent number: 7606498
    Abstract: A method of carrier recovery from a high speed optical signal received through an optical communications network. A stream of multi-bit digital samples of the optical signal is processed to generate a multi-bit estimate X?(n) of each one of a plurality of transmitted symbols. A phase of each symbol estimate X?(n) is rotated, and a respective symbol phase error ??(n) of the rotated symbol estimate determined.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: October 20, 2009
    Assignee: Nortel Networks Limited
    Inventors: Kuang Tsan Wu, Han Sun, Kim B. Roberts, Ruibin Jin, James Harley
  • Dispersion compensation in optical systems
    Patent number: 7386240
    Abstract: In one aspect a system and method for providing a multi-port memory having a plurality of read ports, each read port including a filter coefficient value representing a dispersion compensation value associated with an optical link. The method includes processing an input optical signal using the filter coefficient values in the multi-port memory to generate an output optical signal for transmission on the optical link.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: June 10, 2008
    Assignee: Nortel Networks Limited
    Inventors: Sandy Thomson, Ruibin Jin, Eric Hall, Paul MacDonald
  • Pre-compensation for modulator distortion in optical systems
    Publication number: 20060024062
    Abstract: System, method, and computer program product for accessing values from a multi-port memory having a plurality of read ports, each value representing a modulator distortion compensation value associated with a modulator of an optical device, and processing an input signal using the accessed values to generate an output signal that compensates for modulator distortion.
    Type: Application
    Filed: July 28, 2004
    Publication date: February 2, 2006
    Applicant: Nortel Networks Limited
    Inventors: Lukas Jakober, Sandy Thomson, Ruibin Jin, Eric Hall, Paul MacDonald
  • Dispersion compensation in optical systems
    Publication number: 20050226631
    Abstract: In one aspect a system and method for providing a multi-port memory having a plurality of read ports, each read port including a filter coefficient value representing a dispersion compensation value associated with an optical link. The method includes processing an input optical signal using the filter coefficient values in the multi-port memory to generate an output optical signal for transmission on the optical link.
    Type: Application
    Filed: April 9, 2004
    Publication date: October 13, 2005
    Inventors: Sandy Thomson, Ruibin Jin, Eric Hall, Paul MacDonald