Patents by Inventor Hermann A. Haud

Hermann A. Haud 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).

  • Deterministic first and second order polarization mode dispersion compensator
    Patent number: 7151898
    Abstract: A polarization mode dispersion (PMD) feedforward compensator compensates first and second order PMD. An optical signal is provided to a PMD detector that senses first and second order PMD in the optical signal and produces control signals for the PMD compensator. The PMD compensator comprises, in series, a first polarization controller, an adjustable delay, a second polarization controller, a first fixed delay, a third polarization controller and a second fixed delay.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: December 19, 2006
    Assignee: Massachusetts Institute of Technology
    Inventors: Poh-Boon Phua, Hermann A. Haud