Patents by Inventor Laurent Billes

Laurent Billes 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).

  • All-optical device for regenerating an optical signal modulated in an RZ format
    Patent number: 5798852
    Abstract: The device comprises a first opto-optical gate for resynchronization and a second opto-optical gate for amplitude regeneration, the signal output by the first gate being applied to the control input of the second gate. The device also includes an opto-optical gate for regenerating contrast which receives a signal to be generated both on a source input and on a control input. The opto-optical gate is a three-input Mach-Zehnder interferometer, with each of the two branches thereof having a respective semiconductor optical amplifier.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: August 25, 1998
    Assignee: France Telecom
    Inventors: Laurent Billes, Jean-Claude Simon, Ivan Valiente