Patents by Inventor Jean-Bernard Leroy

Jean-Bernard Leroy 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).

  • Device for assessing the transmission quality of an optical amplifier equipment
    Patent number: 5444238
    Abstract: A device for assessing the transmission quality of an optical amplifier includes a coupler for sampling on the upstream side of the amplifier equipment relative to the direction of propagation of the optical signal to be amplified by the amplifier equipment part of the power of an optical signal propagating in the direction opposite to the propagation direction and corresponding to that part of the noise generated by the amplifier equipment transmitted in the direction opposite to the propagation direction. It also includes a coupler for sampling on the downstream side of the amplifier equipment relative to the propagation direction part of the power of an optical signal propagating in the propagation direction and corresponding to the optical signal after amplification by the amplifier equipment superimposed on that part of the noise generated by the amplifier equipment and transmitted in the propagation direction.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: August 22, 1995
    Assignee: Alcatel CIT
    Inventors: Bernard Gherardi, Gerard Bourret, Jean-Bernard Leroy