Patents by Inventor Iain J. Wilkinson

Iain J. Wilkinson 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).

  • Optical communications system including doped optical fiber filter
    Patent number: 5594578
    Abstract: An optical telecommunications system suitable for operation as a wavelength division multiplex, which system contains at least one filter for attenuating signals at wavelength which are unwanted at a location of the filter, characterized in that the filter comprises an optical fiber which contains a dopant adapted to absorb the unwanted signals.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: January 14, 1997
    Assignee: British Telecommunications public limited company
    Inventors: Benjamin J. Ainslie, Iain J. Wilkinson, Timothy Finegan
  • Fabrication of fused fibre devices
    Patent number: 5342425
    Abstract: Apparatus for fabricating fused optical fibre devices comprises a furnace provided with an electric heating element (5). A heat-distributing insert (7) is provided within the heating element (5), the heating element and the insert being sized and shaped to define a heating chamber for an optical fibre arrangement. The apparatus includes means for passing electric current through the heating element (5), and means (8) for supplying and maintaining an inert atmosphere within the heating chamber.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: August 30, 1994
    Assignee: BT&D Technologies Limited
    Inventors: Christopher J. Rowe, David B. Mortimore, Iain J. Wilkinson, Nicholas E. Achurch
  • Fibre modulators
    Patent number: 5321777
    Abstract: A modulation assembly includes a fibre having a drawn tapered portion, and apparatus for applying a perturbation to the tapered portion to vary the percentage transmission through the fibre.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: June 14, 1994
    Assignee: British Telecommunications public limited company
    Inventors: Andrew M. Hicks, Iain J. Wilkinson, Nicholas E. Achurch, Stephen Hornung
  • Method for fabrication of fused fibre devices
    Patent number: 5288301
    Abstract: Method and apparatus for fabricating fused optical fibre devices includes a furnace provided with an electric heating element. A heat-distributing insert is provided within the heating element, the heating element and the insert being sized and shaped to define a heating chamber for an optical fibre arrangement. The method includes passing electric current through the heating element, and supplying and maintaining an inert atmosphere within the heating chamber.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: February 22, 1994
    Assignee: BT&D Technologies Limited
    Inventors: Christopher J. Rowe, David B. Mortimore, Iain J. Wilkinson, Nicholas E. Achurch