Patents by Inventor Andrew Scott Keys

Andrew Scott Keys 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).

  • Microresonator and associated method for producing and controlling photonic signals with a photonic bandgap delay apparatus
    Patent number: 6028693
    Abstract: By applying a photonic signal to a microresonator that includes a photonic bandgap delay apparatus having a photonic band edge transmission resonance at the frequency of the photonic signal, the microresonator imparts a predetermined delay to the photonic signal. The photonic bandgap delay apparatus also preferably has a photonic band edge transmission resonance bandwidth which is at least as wide as the bandwidth of the photonic signal such that a uniform delay is imparted over the entire bandwidth of the photonic signal. The microresonator also includes a microresonator cavity, typically defined by a pair of switchable mirrors, within which the photonic bandgap delay apparatus is disposed. By requiring the photonic signal to oscillate within the microresonator cavity so as to pass through the photonic bandgap delay apparatus several times, the microresonator can controllably impart an adjustable delay to the photonic signal.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: February 22, 2000
    Assignees: University of Alabama in Huntsville, The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Richard Lynn Fork, Darryl Keith Jones, Andrew Scott Keys