Patents by Inventor Weiming Mao

Weiming Mao 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).

  • Apparatus, system, and method for extracting an optical clock signal from an optical data signal
    Patent number: 6501579
    Abstract: An apparatus of the invention includes a non-linear optical element (NLOE) and an optical frequency discriminator (OFD). The NLOE receives an optical data signal, and introduces chirp at the leading and trailing portions of the optical pulse(s) therein or induces chirp on a continuous wave (CW) optical source coupled to the NLOE. The OFD is coupled to receive the chirped signal, and uses this signal to generate an optical clock signal. The OFD discriminates frequency content associated with chirp to enhance the optical clock signal, and may also suppress non-chirp frequency content such as may be associated with an optical carrier signal or a continuous wave (CW) signal. Related systems and methods are also disclosed.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: December 31, 2002
    Assignee: Optium, Inc.
    Inventors: Guifang Li, Weiming Mao
  • Apparatus, system, and method for extractin an optical clock signal from an optical data signal
    Publication number: 20010038481
    Abstract: An apparatus of the invention includes a non-linear optical element (NLOE) and an optical frequency discriminator (OFD). The NLOE receives an optical data signal, and introduces chirp at the leading and trailing portions of the optical pulse(s) therein or induces chirp on a continuous wave (CW) optical source coupled to the NLOE. The OFD is coupled to receive the chirped signal, and uses this signal to generate an optical clock signal. The OFD discriminates frequency content associated with chirp to enhance the optical clock signal, and may also suppress non-chirp frequency content such as may be associated with an optical carrier signal or a continuous wave (CW) signal. Related systems and methods are also disclosed.
    Type: Application
    Filed: March 1, 2001
    Publication date: November 8, 2001
    Inventors: Guifang Li, Weiming Mao