Patents by Inventor Oliver Voisin

Oliver Voisin 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).

  • Bidirectional optical wavelength multiplexer-demultiplexer
    Patent number: 4708425
    Abstract: A bidirectional optical wavelength multiplexing-demultiplexing device comprises a self-focusing lens having an index gradient and situated between the transmission fibre and filtering means and of which the length is such that the spatial separation between the outgoing wavelengths and the return wavelength is maximum, which permits decoupling of the return channel from the outgoing channels.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: November 24, 1987
    Assignee: Lignes Telegraphiques et Telephoniques Ltt
    Inventors: Mohamed Gouali, Gerald Roullet, Oliver Voisin