Patents Assigned to Ionas A/S Birkerod
  • Temperature stabilization of optical waveguides
    Patent number: 6449293
    Abstract: A method of temperature stabilizing an optical waveguide (11, 12) having a positive thermal optical path length expansion affixes the optical waveguide to at least two points of a material having a negative thermal expansion and comprises the material of a composite of a resin matrix having embedded therein fibers having a negative thermal expansion coefficient and optionally fibers having a positive thermal expansion coefficient, whereby to provide the negative thermal expansion.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: September 10, 2002
    Assignee: Ionas A/S Birkerod
    Inventors: Jens Engholm Pedersen, Martijn Beukema, Christian Vestergaard Poulsen, Lars Erik Eskildsen