Patents Represented by Attorney Richard Laumann

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  • Optical amplifier using optical circulator and fiber amplifier
    Patent number: 5822113
    Abstract: An optical amplifier achieves multistage amplification with a four port optical circulator with fiber amplifiers and Faraday rotators and mirrors connected to at least two of the ports. The fiber amplifiers permit the signal to pass through the fiber amplifiers twice.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: October 13, 1998
    Assignee: Lucent Technologies Inc.
    Inventors: Jean-Marc Pierre Delavaux, Jonathan A. Nagel