Patents Assigned to University of Southhamton
  • 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