Patents by Inventor Philip M. Gorman

Philip M. Gorman 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).

  • Non-linear optical device
    Patent number: 8749875
    Abstract: A non-linear optical device includes a frequency-conversion waveguide and first and second input waveguides. The longitudinal axes of the input waveguides are inclined to that of the frequency-conversion waveguide such a first transverse mode is excited in the latter at the input frequency in operation of the device. The frequency-conversion waveguide supports a second transverse mode at an output frequency of the device, such that the phase velocity of the second transverse mode at the output frequency is substantially equal to that of the first transverse mode at the input frequency, thus providing phase-matching by balancing the effects of chromatic and modal dispersion.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: June 10, 2014
    Assignee: Qinetiq Limited
    Inventors: David M. Benton, Philip M. Gorman, Paul R. Tapster, David Maurice Taylor, Ewan D. Finlayson
  • Electro-optic waveguide polarisation modulator
    Patent number: 8611534
    Abstract: An electro-optic waveguide polarization modulator (20) comprising a waveguide core (4) having first and second faces defining a waveguide core plane, a plurality of primary electrodes (22, 24) arranged at a first side of the waveguide core plane and out of said plane, and at least one secondary electrode (26) arranged at a second side of the waveguide core plane and out of said plane, wherein the electrodes (22, 24, 26) are adapted in use to provide an electric field having field components (13, 15) in two substantially perpendicular directions within the waveguide core (4) so as modulate the refractive index thereof such that electromagnetic radiation propagating through the core (4) is converted from a first polarization state to a second polarization state.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: December 17, 2013
    Assignee: QinetiQ Limited
    Inventors: Ewan D Finlayson, Philip M Gorman, John M Heaton, Michael J Kane, Brian S Lowans
  • NON-LINEAR OPTICAL DEVICE
    Publication number: 20110228380
    Abstract: A non-linear optical device includes a frequency-conversion waveguide and first and second input waveguides. The longitudinal axes of the input waveguides are inclined to that of the frequency-conversion waveguide such a first transverse mode is excited in the latter at the input frequency in operation of the device. The frequency-conversion waveguide supports a second transverse mode at an output frequency of the device, such that the phase velocity of the second transverse mode at the output frequency is substantially equal to that of the first transverse mode at the input frequency, thus providing phase-matching by balancing the effects of chromatic and modal dispersion.
    Type: Application
    Filed: November 25, 2009
    Publication date: September 22, 2011
    Applicant: QINETIQ LIMITED
    Inventors: David M. Benton, Philip M. Gorman, Paul R. Tapster, David Maurice Taylor, Ewan D. Finlayson