Patents by Inventor Edwin A. Zak

Edwin A. Zak 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).

  • Optical amplifiers that support gain clamping and optionally power loading
    Patent number: 10805008
    Abstract: An apparatus includes an optical amplifier configured to receive an input optical signal and generate an amplified output optical signal. The optical amplifier includes multiple amplifier stages including at least a first amplifier stage and a second amplifier stage. The apparatus also includes a gain clamp configured to accumulate optical power from the first amplifier stage after an optical power level of the input optical signal drops and provide a first portion of the accumulated optical power to the first amplifier stage to clamp a gain applied by the first amplifier stage. The gain clamp is also configured to provide a second portion of the accumulated optical power to the second amplifier stage to adjust a gain applied by the second amplifier stage. The second amplifier stage is configured to amplify the second portion of the accumulated optical power.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: October 13, 2020
    Assignee: Neptune Subsea IP Limited
    Inventors: Wayne S. Pelouch, Edwin A. Zak