Patents by Inventor John Mark Pottage

John Mark Pottage 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 fibres
    Patent number: 7224873
    Abstract: Photonic crystal fibers that guide light by virtue of a photonic band gap. Fibers that are formed from materials having higher refractive indices than silica are provided using an optical waveguide including a core with a relatively low refractive index and a photonic band gap structure that can substantially confine light to the core. The structure includes elongate regions of relatively low refractive index interspersed with elongate regions of relatively high refractive index, with the band gap residing above the fifth photonic band of the band gap structure.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: May 29, 2007
    Assignee: Crystal Fibre A/S
    Inventors: David Michael Bird, John Mark Pottage, Timothy Adam Birks, Matthew James Banham