Patents by Inventor Neil Payne

Neil 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).

  • Restricted movement chain and universal link therefor
    Patent number: 5970701
    Abstract: The present invention features a chain of serially connected, universal links. The chain is movable in one direction, but restricted in movement in the opposite direction. The chain consists of a number of substantially identical links. Each of the links has an elongated body portion with abutments at distal ends thereof. The abutments engage respective abutments of neighboring links. Connected to the body portion of each link are two leg portions. The two leg portions each have an aperture for receiving a pin. At least one of the leg portions may be bifurcated into two, substantially parallel sides. The two sides of one of the bifurcated leg portions are spaced apart from one another so as to contain the other leg portion of a neighboring link. This other leg portion may be solid. Each leg extends beyond the distal ends of the body portion, so that, when the links are connected to one another, the aperture of one of the legs is aligned with the aperture of a neighboring leg.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: October 26, 1999
    Inventors: Garey Roden, Neil Payne
  • Doped optical waveguide amplifier
    Patent number: 5936762
    Abstract: The core of a low phonon energy glass optical fibre is doped with trivalent Dysprosium ions for application as an efficient optical fibre amplifier operating around 1.3 .mu.m. The device utilises the transition .sup.6 H.sub.9/2 -.sup.6 F.sub.11/2 to .sup.6 H.sub.15/2. The low phonon energy (high quantum efficiency) glasses include mixed halides, chalcogenides and chalcohalides. Improvements in efficiency can be achieved by co-doping of the fibre core with Eu.sup.3+ and/or Tb.sup.3+ ions.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: August 10, 1999
    Assignee: University of Southhamton
    Inventors: Bryce Neilson Samson, Daniel William Hewak, Richard Ian Laming, David Neil Payne
  • Optical fibre and optical fibre device
    Patent number: 5881197
    Abstract: An optical fiber has a cladding glass layer surrounding a glass core, in which a region (preferably annular) of the optical fiber partially overlapping the cladding and/or the core is formed of photosensitive glass.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: March 9, 1999
    Assignee: University of Southampton
    Inventors: Liang Dong, Laurence Reekie, David Neil Payne
  • Optical fibre distributed feedback laser
    Patent number: 5771251
    Abstract: An optical fibre distributed feedback laser comprises an amplifying optical fibre (50) operable to provide optical gain at a lasing wavelength, in which a diffraction grating (30) is disposed on at least a portion of the amplifying optical fibre to provide distributed optical feedback for sustaining lasing action at the lasing wavelength.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: June 23, 1998
    Assignee: University of Southampton
    Inventors: Jon Thomas Kringlebotn, David Neil Payne, Laurence Reekie, Jean Luc Archambault