Patents by Inventor Bertrand Lambert

Bertrand Lambert 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 regenerator for wavelength-division multiplexed signals
    Publication number: 20030190167
    Abstract: The present invention provides a regenerator device for wavelength division multiplexed optical signals designed to regenerate the N channels of a multiplex simultaneously, the device being characterized in that it comprises at least one regenerator component (112, 152) suitable for coupling the inlet signal with a multiplex of N optical carriers, the regenerator component (112, 152) being constituted by a material presenting a spectrum line with non-uniform broadening so that there is no interaction between the various channels involved within the component.
    Type: Application
    Filed: February 25, 2003
    Publication date: October 9, 2003
    Inventors: Jean-Claude Simon, Bertrand Lambert, Slimane Loualiche, Bernard Sermage, David Pureur
  • Process for the preparation of mono-crystalline 3-5 semi-insulating materials by doping and use of the semi-insulating materials thus obtained
    Patent number: 4853077
    Abstract: The present invention relates to a process for the preparation of mono-crystalline 3-5 semi-insulating materails by doping, characterized in that the starting charge of type .rho. is doped with at least one deep donor due to a transition element. It relates also to the use of the semi-insulating materials obtained in the fields of optoelectronics and of rapid electronics.
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: August 1, 1989
    Assignee: Etat Francais
    Inventors: Bertrand Lambert, Yves Toudic, Rene Coquille