Patents by Inventor Paul-Hubert Zongo

Paul-Hubert Zongo 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).

  • Optical fibre incorporating a Bragg lattice and its application
    Patent number: 5307437
    Abstract: The invention relates to an optical fibre including, over a part of its length, variations of refractive index disposed in plane, parallel and periodic strata, of period I, which are inclined at an angle .alpha. in relation to the axis of the fibre. The normal to the strata forms a non-zero angle with the axis of the fibre. The invention also relates to the application of the invention optical fibre as a selective extractor of flux, a light injector, a coupler, a sensor and a polarizer.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: April 26, 1994
    Assignee: Gaz de France
    Inventors: Paul Facq, Philippe Di Bin, Paul-Hubert Zongo
  • Optical fibre incorporating a variable internal Bragg grating and its applications
    Patent number: 5218651
    Abstract: Optical fibre device having a core and coaxial sheath. The core and coaxial sheath provides a light amplifier when optically pumped. Interfering optical waves incident to the fiber having a predetermined intensity and wavelength inscribe an ephemeral periodic index strata grating over at least part of the fiber core when the core is illuminated. In the absence of illumination by interfering waves, the grating disappears.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: June 8, 1993
    Assignee: Gaz de France
    Inventors: Paul Faco, Philippe Di Bin, Paul-Hubert Zongo