Patents by Inventor John D. Joannopoious

John D. Joannopoious 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).

  • Dielectric waveguide with transverse index variation that support a zero group velocity mode at a non-zero longitudinal wavevector
    Patent number: 6909729
    Abstract: Optical components including a laser based on a dielectric waveguide extending along a waveguide axis and having a refractive index cross-section perpendicular to the waveguide axis, the refractive index cross-section supporting an electromagnetic mode having a zero group velocity for a non-zero wavevector along the waveguide axis.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: June 21, 2005
    Assignee: Massachusetts Institute of Technology
    Inventors: Mihai Ibanescu, John D. Joannopoious, Yoel Fink, Steven G. Johnson, Shanhui Fan