Patents by Inventor Hernan Erlig

Hernan Erlig 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).

  • Photonic RF phase shifter with mitigated RF power fluctuation and devices incorporating the same
    Patent number: 6900707
    Abstract: A power balanced photonic RF phase shifter includes: a microwave drive; a phase controller operably connected to the microwave drive; and a linearizing arm connected in parallel with the microwave drive, the linearizing arm operating under a bias voltage, Vlin, that is controlled such that power variations of the photonic RF phase shifter are mitigated. In a preferred embodiment, the bias voltage, Vlin, is controlled to keep an optical phase of the photonic RF phase shifter at a constant value. In a preferred embodiment, the microwave drive, the phase controller and the linearizing arm comprise (three) Mach-Zehnder modulators.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: May 31, 2005
    Assignee: Pacific Wave Industries, Inc.
    Inventors: Hernan Erlig, Harold R. Fetterman, Joseph Michael
  • Photonic RF phase shifter with mitigated RF power fluctuation and devices incorporating the same
    Publication number: 20030102938
    Abstract: A power balanced photonic RF phase shifter includes: a microwave drive; a phase controller operably connected to the microwave drive; and a linearizing arm connected in parallel with the microwave drive, the linearizing arm operating under a bias voltage, Vlin, that is controlled such that power variations of the photonic RF phase shifter are mitigated. In a preferred embodiment, the bias voltage, Vlin, is controlled to keep an optical phase of the photonic RF phase shifter at a constant value. In a preferred embodiment, the microwave drive, the phase controller and the linearizing arm comprise (three) Mach-Zehnder modulators.
    Type: Application
    Filed: November 30, 2001
    Publication date: June 5, 2003
    Inventors: Hernan Erlig, Harold R. Fetterman, Joseph Michael