Patents by Inventor Greg Daugherty

Greg Daugherty 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).

  • Double side band, carrier suppressed modulated coherent fiber optic link
    Patent number: 6115162
    Abstract: A system for conveying a signal by optical fiber may include a converter for converting a radio frequency signal to an optical frequency signal, the converter having an interferometer modulator for providing a carrier suppressed optical frequency signal having a sideband modulated by the radio frequency signal, an optical amplifier for amplifying the modulated sideband before transmission on an optical fiber by an amount that is greater than or approximates the transmission loss in the system, a local oscillator, a coupler, and detector for converting (superheterodyning) the modulated sideband from the optical fiber to a predetermined intermediate radio frequency.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: September 5, 2000
    Assignee: Harris Corporation
    Inventors: David Graves, Greg Daugherty, Robert Montgomery