Patents by Inventor Hugo Leonardo Rocha de Lira

Hugo Leonardo Rocha de Lira 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).

  • Pin diode tuned multiple ring waveguide resonant optical cavity switch and method
    Patent number: 8606055
    Abstract: An optical switch structure and a method for fabricating the optical switch structure provide at least two ring waveguides located and formed supported over a substrate. At least one of the at least two ring waveguides includes at least one PIN diode integral with the ring waveguide as a tuning component for an optical switch device that derives from the optical switch structure. The PIN diode includes different doped silicon slab regions internal to and external to the ring waveguide, and an intrinsic region there between that includes the ring waveguide. The method uses two photolithographic process steps, and also preferably a silicon-on-insulator substrate, to provide the ring waveguides formed of a monocrystalline silicon semiconductor material.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: December 10, 2013
    Assignee: Cornell University
    Inventors: Michal Lipson, Sasikanth Manipatruni, Hugo Leonardo Rocha de Lira
  • PIN DIODE TUNED MULTIPLE RING WAVEGUIDE RESONANT OPTICAL CAVITY SWITCH AND METHOD
    Publication number: 20110170821
    Abstract: An optical switch structure and a method for fabricating the optical switch structure provide at least two ring waveguides located and formed supported over a substrate. At least one of the at least two ring waveguides includes at least one PIN diode integral with the ring waveguide as a tuning component for an optical switch device that derives from the optical switch structure. The PIN diode includes different doped silicon slab regions internal to and external to the ring waveguide, and an intrinsic region there between that includes the ring waveguide. The method uses two photolithographic process steps, and also preferably a silicon-on-insulator substrate, to provide the ring waveguides formed of a monocrystalline silicon semiconductor material.
    Type: Application
    Filed: November 4, 2010
    Publication date: July 14, 2011
    Applicant: CORNELL UNIVERSITY
    Inventors: Michal Lipson, Sasikanth Manipatruni, Hugo Leonardo Rocha de Lira