Patents by Inventor Jean Debeau

Jean Debeau 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).

  • Process and device for measuring the complex spectrum (amplitude and phase) of optical pulses
    Patent number: 6160626
    Abstract: A method and apparatus for determining a phase relation of a signal in which a spectrum thereof includes a spectral component at a central optical frequency f.sub.0 and frequency spikes f.sub.n =f.sub.0 .+-.nF, where n is an integer. The apparatus includes device (29, 26, 28, 30 and 32) for producing signals representative of phase differences between two frequency spikes for each pair of adjacent frequency spikes of the frequency spikes f.sub.n.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: December 12, 2000
    Assignee: France Telecom
    Inventors: Jean Debeau, Remi Boittin
  • Method and device for generating optical pulses
    Patent number: 5477555
    Abstract: Method and device for generating optical pulses.According to the invention, in order to generate an optical signal in the form of optical pulses, a semiconductor laser (2) is made to function as gain commutation, and a portion of the light produced by this laser is reinjected into the laser. The light to be reinjected is previously filtered by an optical filter (12) which is tuned to one of the modes of the laser. Another portion of the light produced by the laser is used as an optical signal after having been filtered this portion by the optical filter.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: December 19, 1995
    Assignee: France Telecom Etablissement Autonome de Droit Public
    Inventors: Jean Debeau, Remi Boittin