Patents by Inventor Frank Philip Payne

Frank Philip Payne 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).

  • Semiconductor optical waveguide device
    Patent number: 7035509
    Abstract: A device comprises a tapered semiconductor optical waveguide which tapers, at an angle of taper with respect to a longitudinal axis of the waveguide, from a relatively wide region to a relatively narrow region, wherein the angle of taper varies along the length of the tapered waveguide such that at all points along the taper it is no greater than, and within a substantially constant angular separation of, the adiabatic limit of the fundamental mode of the waveguide at that point along the taper.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: April 25, 2006
    Assignee: Bookham Technology, PLC
    Inventor: Frank Philip Payne
  • Semiconductor optical waveguide device
    Patent number: 6853775
    Abstract: A device comprises a tapered semiconductor optical waveguide which tapers, at an angle of taper with respect to a longitudinal axis of the waveguide, from a relatively wide region to a relatively narrow region, wherein the angle of taper varies along the length of the tapered waveguide such that at all points along the taper it is no greater than, and within a substantially constant angular separation of, the adiabatic limit of the fundamental mode of the waveguide at that point along the taper.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: February 8, 2005
    Assignee: Bookham Technology, PLC
    Inventor: Frank Philip Payne
  • Semiconductor optical waveguide device
    Publication number: 20040037506
    Abstract: A device comprises a tapered semiconductor optical waveguide which tapers, at an angle of taper with respect to a longitudinal axis of the waveguide, from a relatively wide region to a relatively narrow region, wherein the angle of taper varies along the length of the tapered waveguide such that at all points along the taper it is no greater than, and within a substantially constant angular separation of, the adiabatic limit of the fundamental mode of the waveguide at that point along the taper.
    Type: Application
    Filed: May 22, 2003
    Publication date: February 26, 2004
    Applicant: BOOKHAM TECHNOLOGY, plc
    Inventor: Frank Philip Payne