Patents by Inventor George BROCKLEHURST

George BROCKLEHURST 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 for control of optical intensity and extinction ratio of laser modulation in an optical transmitter
    Patent number: 10535978
    Abstract: A system for controlling an optical intensity and modulation of an optical data transmitter which includes current driver circuitry configured to provide a drive current to a laser diode wherein said current comprises a fixed component and a modulated component, said modulated component having a magnitude related to an input data stream. The monitor circuitry contains a photodiode and a first transimpedance amplifier coupled to said photodiode, said monitor circuitry configured to provide an output signal related to an optical intensity of said laser diode. The system further includes replica monitor circuitry containing a replica capacitor with a replica capacitance and a second transimpedance amplifier configured to be substantially identical in construction to said first transimpedance amplifier, said second transimpedance amplifier coupled to said replica capacitor.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: January 14, 2020
    Assignee: HILIGHT SEMICONDUCTOR LIMITED
    Inventors: William Redman-White, Dominique Coue, Colin Whitfield, Christian Rookes, Derek Hutchins, George Brocklehurst
  • Method for Control of Optical Intensity and Extinction Ratio of Laser Modulation in an Optical Transmitter
    Publication number: 20180219354
    Abstract: A system for controlling an optical intensity and modulation of an optical data transmitter which includes current driver circuitry configured to provide a drive current to a laser diode wherein said current comprises a fixed component and a modulated component, said modulated component having a magnitude related to an input data stream. The monitor circuitry contains a photodiode and a first transimpedance amplifier coupled to said photodiode, said monitor circuitry configured to provide an output signal related to an optical intensity of said laser diode. The system further includes replica monitor circuitry containing a replica capacitor with a replica capacitance and a second transimpedance amplifier configured to be substantially identical in construction to said first transimpedance amplifier, said second transimpedance amplifier coupled to said replica capacitor.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 2, 2018
    Applicant: Hilight Semiconductor Limited
    Inventors: William REDMAN-WHITE, Dominique COUE, Colin WHITFIELD, Christian ROOKES, Derek HUTCHINS, George BROCKLEHURST