Patents by Inventor Andreas Kussmaul

Andreas Kussmaul 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).

  • Signal band antireflection coating for pump facet in fiber amplifier system
    Patent number: 6330264
    Abstract: A laser diode pump for fiber amplifiers, such as erbium-doped fiber amplifiers (EDFAs), reduces spurious reflections in the signal frequencies by providing a laser pump system that is dissipative at these signal frequencies. Reflections from the pump system are reduced, or eliminated by using an output facet that is currently coated to be reflective at pump frequencies, but anti-reflective, or transmissive, at the signal frequencies. In one embodiment, material layers of aluminum oxide (Al2O3), titanium dioxide (TiO2), and silicon dioxide (SiO2) are used.
    Type: Grant
    Filed: January 18, 1999
    Date of Patent: December 11, 2001
    Assignee: Corning Lasertron, Inc.
    Inventor: Andreas Kussmaul