Patents by Inventor Anders O. Bjarklev

Anders O. Bjarklev 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).

  • Method of amplifying an optical signal, an optical amplifier for performing the method, and use of such an optical amplifier as a source of light
    Patent number: 5469292
    Abstract: An optical amplifier for signal light. The amplifier amplifies signals at a certain signal wavelength and consists of an active optical waveguide (4) of simple wave type geometry at the signal wavelength, a pump laser (2) for obtaining inverted population between the energy levels involved and coupling devices for coupling pump light and signal light in the active optical waveguide (4). The active optical waveguide is doped with ions of transition metals or metals from the groups of Lanthanides or Actinides. This doping is in a cylinder shell-shaped area (13) around the axis of symmetry of the waveguide (4) so that the reduction in the optical power originating from amplified spontaneous emission is greater than the reduction in the optical power originating from amplified signal light.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: November 21, 1995
    Assignee: Lycom A/S
    Inventors: Anders O. Bjarklev, Thomas P. Rasmussen