Patents by Inventor Alain Enard

Alain Enard 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).

  • Differential absorption polarizer, a method of forming same and device implementing said method
    Patent number: 4763972
    Abstract: A differential absorption polarizer is constructed to be used in accordance with integrated optics.This polarizer includes, on a waveguide layer formed on a substrate, a layer of dielectric material whose surface has hollows and bosses and therefore several inclined zones. The hollows and bosses define minimum (em) and maximum (eM) thicknesses of the layer, which bracket the resonance thickness of the dielectric for the polarization there to be absorbed.The dielectric material layer is coated with a metal layer.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: August 16, 1988
    Assignee: Thomson-CSF
    Inventors: Michel Papuchon, Alain Enard, Sylvie Vatoux, Michel Werner
  • Monomode optical fiber reciprocal ring interferometer device
    Patent number: 4762416
    Abstract: A device is provided forming a strictly ring interferometer having a ring formed by a monomode fiber, a source, separation and recombination means, and a monomode fiber segment forming mode filter. According to the invention, this monomode fiber segment is provided with a shutter generating directional losses intercepted by an optoelectronic detection member.
    Type: Grant
    Filed: November 5, 1986
    Date of Patent: August 9, 1988
    Assignee: Thomson-CSF
    Inventors: Herve Lefevre, Alain Enard