Patents by Inventor Milson Silva

Milson Silva 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).

  • Coupled quantum well optical intensity modulator for INP based optoelectronic integrated circuits and methods therefor
    Patent number: 5428225
    Abstract: An integrated optical intensity modulator. The modulator is an optical waveguide on a semi-insulating substrate and having a core layer for transmitting an optical signal. The modulator includes contiguous the core layer an active cladding which has a multicoupled quantum well structure. The multicoupled quantum well includes at least one pair of quantum wells separated by a barrier. The modulator further includes first and second additional claddings wherein the core layer and the active cladding are interposed between the additional claddings. A voltage source generates an electric field through the active cladding which varies the refractive index of the active cladding as a function of the strength of the electric field for modulating the optical signal.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: June 27, 1995
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Milson Silva, Peter R. Herczfeld, Steven A. Malone, Arthur C. Paolella