Patents by Inventor Gregory Douglas VanWiggeren

Gregory Douglas VanWiggeren 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).

  • Single sweep phase shift method and apparatus for measuring chromatic and polarization dependent dispersion
    Patent number: 6724468
    Abstract: A method for determining at least one optical property of an optical device comprises providing an optical input signal that includes first and second signal components that are modulated at first and second frequencies, respectively, and that have first and second polarization states, respectively. The optical input signal is passed to an optical device. An optical output signal from the optical device is separated into first and second output signals that have third and fourth polarization states, respectively. The first and second output signals are each compared with reference signals at the first and second frequencies to provide four phase shift and amplitude measurements that can be used to determine the at least one optical property of the optical device as a function of wavelength.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: April 20, 2004
    Assignee: Agilent Technologies, INC
    Inventors: William Ian McAlexander, Gregory Douglas VanWiggeren
  • SINGLE SWEEP PHASE SHIFT METHOD AND APPARATUS FOR MEASURING CHROMATIC AND POLARIZATION DEPENDENT DISPERSION
    Publication number: 20040021864
    Abstract: A method for determining at least one optical property of an optical device comprises providing an optical input signal that includes first and second signal components that are modulated at first and second frequencies, respectively, and that have first and second polarization states, respectively. The optical input signal is passed to an optical device. An optical output signal from the optical device is separated into first and second output signals that have third and fourth polarization states, respectively. The first and second output signals are each compared with reference signals at the first and second frequencies to provide four phase shift and amplitude measurements that can be used to determine the at least one optical property of the optical device as a function of wavelength.
    Type: Application
    Filed: July 31, 2002
    Publication date: February 5, 2004
    Inventors: William Ian McAlexander, Gregory Douglas VanWiggeren