Patents by Inventor Frederic L. Barthelemy

Frederic L. Barthelemy 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).

  • Patent number: 6825973
    Abstract: An optical amplifier includes at least one amplification stage having a saturation recovery time of less than one (1) millisecond. The amplification stage includes a gain medium operable to receive at least one pump signal and to receive from a multiple span communication link an optical signal comprising a leading edge. The at least one pump signal and the optical signal travel in the same direction at approximately the same speed through at least a portion of the gain medium. In one particular embodiment the leading edge of the optical signal after passing through a plurality of amplifiers when received by a receiver coupled to the communication link comprises a peak power that is no more than ten times the average power of the optical signal at the receiver.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: November 30, 2004
    Assignee: Xtera Communications, Inc.
    Inventors: Andrej B. Puc, Michel W. Chbat, Jason D. Henrie, Sergey P. Burtsev, Frederic L. Barthelemy, Ned A. Weaver