Patents by Inventor Ihab El-Kady

Ihab El-Kady 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).

  • Use of a photonic crystal for optical amplifier gain control
    Patent number: 7079309
    Abstract: An optical amplifier having a uniform gain profile uses a photonic crystal to tune the density-of-states of a gain medium so as to modify the light emission rate between atomic states. The density-of-states of the gain medium is tuned by selecting the size, shape, dielectric constant, and spacing of a plurality of microcavity defects in the photonic crystal. The optical amplifier is particularly useful for the regeneration of DWDM signals in long optical fibers.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: July 18, 2006
    Assignee: Sandia Corporation
    Inventors: Shawn-Yu Lin, James G. Fleming, Ihab El-Kady