Patents by Inventor Curtis Wayne Lowry

Curtis Wayne Lowry 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).

  • Device for modulating an optical signal using a single wave guide
    Patent number: 5903683
    Abstract: The present invention is a device for adding delay and compensating for dispersion in an optical signal. In a first embodiment, the present invention is made up of a waveguide, preferably an optical fiber, having two or more forward-reflecting gratings for separating an optical signal into user-selected wavelength portions to be propagated in different propagation modes and then recombining them to achieve the desired result. In another embodiment, the present invention is a waveguide, preferably an optical fiber, having three or more gratings where the gratings may be forward-diffracting or backward-reflecting for extending the capability of the first embodiment.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: May 11, 1999
    Assignee: The United States of America as represented by the National Security Agency
    Inventor: Curtis Wayne Lowry