Patents by Inventor Dennis S. Olesen

Dennis S. Olesen 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).

  • Method and an apparatus for modulating light
    Patent number: 6810159
    Abstract: The invention relates to a method and a modulator circuit for modulating light in a modulator circuit. The modulator circuit comprises a Mach-Zehnder modulator having at least one optical input and at least one optical output, said Mach-Zehnder modulator modulating light, which is fed to the input of the Mach-Zehnder modulator in response to applied electrical modulation signals from a driver circuit. According to a method of the invention, the applied modulation signal on the electrodes of the Mach-Zehnder modulator is superimposed by a pilot tone which is thus superimposed by the modulated light emitted by the Mach-Zehnder modulator. In response to the emitted modulated light, an electrical feedback circuit generates bias control signals for the bias circuit and driver control signals for the driver circuit for regulating the bias signal and the driver signal fed to the Mach-Zehnder modulator.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: October 26, 2004
    Assignee: Tellabs Denmark A/S
    Inventor: Dennis S. Olesen
  • Method and an apparatus for modulating light
    Publication number: 20030202727
    Abstract: The invention relates to a method and a modulator circuit for modulating light in a modulator circuit.
    Type: Application
    Filed: April 15, 2003
    Publication date: October 30, 2003
    Inventor: Dennis S. Olesen
  • Method and an apparatus for modulating light
    Patent number: 6556728
    Abstract: The invention relates to a method and a modulator circuit for modulating light in a modulator circuit. The modulator circuit comprises a Mach-Zehnder modulator having at least one optical input and at least one optical output, said Mach-Zehnder modulator modulating light, which is fed to the input of the Mach-Zehnder modulator in response to applied electrical modulation signals from a driver circuit. According to a method of the invention, the applied modulation signal on the electrodes of the Mach-Zehnder modulator is superimposed by a pilot tone which is thus superimposed by the modulated light emitted by the Mach-Zehnder modulator. In response to the emitted modulated light, an electrical feedback circuit generates bias control signals for the bias circuit and driver control signals for the driver circuit for regulating the bias signal and the driver signal fed to the Mach-Zehnder modulator.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: April 29, 2003
    Assignee: Tellabs Denmark A/S
    Inventor: Dennis S. Olesen
  • Method and an apparatus for modulating light
    Publication number: 20020075550
    Abstract: The invention relates to a method and a modulator circuit for modulating light in a modulator circuit.
    Type: Application
    Filed: February 13, 2002
    Publication date: June 20, 2002
    Inventor: Dennis S. Olesen
  • Method and an apparatus for modulating light in a modulator circuit comprising Mach-Zehnder modulator
    Patent number: 6374000
    Abstract: The invention relates to a method and a modulator circuit for modulating light in a modulator circuit. The modulator circuit comprises a Mach-Zehnder modulator (12) having at least one optical input and at least one optical output, said Mach-Zehnder modulator (12) modulating light, which is fed to the input of the Mach-Zehnder modulator (12) in response to applied electrical modulation signals from a driver circuit (15). According to a method of the invention, the applied modulation signal on the electrodes of the Mach-Zehnder modulator is superimposed by a pilot tone which is thus superimposed by the modulated light emitted by the Mach-Zehnder modulator. In response to the emitted modulated light, an electrical feedback circuit (30) generates bias control signals for the bias circuit (16) and driver control signals for the driver circuit (15) for regulating the bias signal and the driver signal fed to the Mach-Zehnder modulator (12).
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: April 16, 2002
    Assignee: DSC Communications A/S
    Inventor: Dennis S. Olesen