Patents by Inventor Steven R. Tobin

Steven R. Tobin 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).

  • Apparatus and circuitry for stabilizing laser diode output for analog modulation
    Patent number: 4625315
    Abstract: Circuitry and apparatus for stabilizing the output of a laser diode when modulated with a wideband analog signal. The circuitry provides for continuous operation of the laser diode with a pin diode positioned for receiving a portion of the output from the laser diode via optics positioned between the laser diode and the pin diode. The optics includes a collimator, a linear polarizer and a polarization beam splitter. The circuitry includes a high gain amplifier which receives the analog signal with a compensating network connected between the amplifier output and the laser diode. The circuitry also has a feedback circuit portion including the pin diode connected to one input of the amplifier.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: November 25, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard R. Lemberger, Paul C. Schubert, Steven R. Tobin