Patents by Inventor Robert Ehrler Tench

Robert Ehrler Tench 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).

  • Electroabsorption modulator with tunable chirp
    Patent number: 6778309
    Abstract: An electroabsorption modulator comprises a tandem arrangement of a conventional electroabsorption (EA) modulator element and a phase modulator element. The EA modulator element is driven by the digital data signal and the phase modulator is driven by a chirp tuning control signal, such as the complement of the data signal. By controlling the amplitude and/or bias of the chirp tuning control signal, the frequency chirp of the intensity-modulated output signal from the EA modulator element can be controlled.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: August 17, 2004
    Assignee: Triquint Technology Holding Co.
    Inventors: Joseph Michael Freund, Thomas Gordon Beck Mason, Joseph Patrick Reynolds, Robert Ehrler Tench, Frank Stephen Walters
  • Electroabsorption modulator with tunable chirp
    Publication number: 20040036943
    Abstract: An electroabsorption modulator comprises a tandem arrangement of a conventional electroabsorption (EA) modulator element and a phase modulator element. The EA modulator element is driven by the digital data signal and the phase modulator is driven by a chirp tuning control signal, such as the complement of the data signal. By controlling the amplitude and/or bias of the chirp tuning control signal, the frequency chirp of the intensity-modulated output signal from the EA modulator element can be controlled.
    Type: Application
    Filed: August 22, 2002
    Publication date: February 26, 2004
    Inventors: Joseph Michael Freund, Thomas Gordon Beck Mason, Joseph Patrick Reynolds, Robert Ehrler Tench, Frank Stephen Walters