Patents by Inventor Mathilde Semenkoff

Mathilde Semenkoff 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).

  • Optical amplifier with a doped fluoride glass of optical fibre and process for producing said amplifier
    Patent number: 5502591
    Abstract: Optical amplifier with a doped fluoride glass optical fibre and process for the production of said amplifier.In said amplifier, two monomode silica fibres (4a, 6a), whereof at least one is doped with erbium, are coupled to two ends of an erbium-doped, fluoride glass monomode fibre (2) and have the same optical mode diameter as the latter. Application to optical telecommunications.
    Type: Grant
    Filed: January 24, 1995
    Date of Patent: March 26, 1996
    Assignee: France Telecom Etablissement Autonome de Droit Public
    Inventors: Mathilde Semenkoff, Daniel Ronarc 'H, Marcel Guibert