Patents by Inventor Marc Sorel

Marc Sorel 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).

  • Method of and device for measuring return losses in optical fiber components
    Patent number: 5864400
    Abstract: A method of and an apparatus for measuring return loss in an optical fiber component. Radiation of a predetermined wavelength, e.g. from a laser, is launched into an optical fiber component, preferably through an optical fiber having a polarization control loop and the radiation reflected and the direct radiation are subjected to phase modification. An amplitude of the frequency component of the detected signal at the frequency imposed by phase modulation is measured and is used as the basis for evaluating the return loss.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: January 26, 1999
    Assignee: Cselt - Centro Studi E Laboratori Telecommunicazioni S.P.A.
    Inventors: Lorenzo Bottazzi, Silvano Donati, Marc Sorel, Tiziana Tambosso