Patents by Inventor Jean Barrau

Jean Barrau 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).

  • Semiconductor optical amplifier
    Patent number: 5982531
    Abstract: The invention concerns a semiconductor optical amplifier. The optical guide structure of this amplifier comprises a rectangular cross-section active stripe (12). Its material is homogeneous and it is subjected to a tensile strain sufficient to render the amplifier insensitive to the polarisation of the light to be amplified.The invention finds an application in optical telecommunications.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: November 9, 1999
    Assignee: Alcatel Optronics
    Inventors: Jean-Yves Emery, Leon Goldstein, Pierre Doussiere, Jean Barrau