Patents by Inventor Stuart N. Radcliffe

Stuart N. Radcliffe 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).

  • Electro-optical tunable filter
    Patent number: 5428701
    Abstract: An optical filter comprises a light waveguide and an electrode structure located adjacent the waveguide. The electrode structure comprises a first ladder arrangement having a plurality of rungs disposed along the length of the waveguide and spaced apart from each other, each rung of the first ladder arrangement comprising a plurality of interdigitated electrode pairs. A second ladder arrangement has a plurality of rungs interleaved with the rungs of the first ladder arrangement and spaced apart from each other by a second pitch spacing that is different from the first pitch spacing.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: June 27, 1995
    Assignee: GEC-Marconi Limited
    Inventors: Laurence J. St Ville, Nicholas J. Parsons, Stuart N. Radcliffe
  • Integrated optic waveguide with bend
    Patent number: 4993794
    Abstract: An integrated optic device includes a waveguide which is curved and includes a section at the bend which is capable of supporting more than one waveguide mode at the opearting frequency. This enables bend angles of greater than 5.degree. be to accommodated without excessive power losses.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: February 19, 1991
    Assignee: GEC-Marconi Limited
    Inventors: Terence P. Young, Stuart N. Radcliffe, Edwin F. W. Leach