Patents by Inventor Jean-Francois Couillard

Jean-Francois Couillard 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).

  • Tunable phase mask assembly
    Patent number: 6643066
    Abstract: A tunable phase mask assembly for use in photoinducing an optical wavelength filter in an optical waveguide. The phase mask assembly includes a phase mask having a length extending between two opposite longitudinal ends. The phase mask has grating corrugations projecting from its surface and distributed with a periodicity along its length. The periodicity of the phase mask is tuned by reversibly changing its length between the two longitudinal ends, such as by compressing or stretching the mask. In this manner, the interference pattern of a light beam passing through the phase mask is also tuned, which allows to control the characteristics of a wavelength filter photoinduced using this phase mask assembly.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: November 4, 2003
    Assignee: Institut National d'Optique
    Inventors: Jean-François Couillard, François Trépanier, Chiara Meneghini, Jocelyn Lauzon
  • Tunable phase mask assembly
    Publication number: 20030112516
    Abstract: A tunable phase mask assembly for use in photoinducing an optical wavelength filter in an optical waveguide. The phase mask assembly includes a phase mask having a length extending between two opposite longitudinal ends. The phase mask has grating corrugations projecting from its surface and distributed with a periodicity along its length. The periodicity of the phase mask is tuned by reversibly changing its length between the two longitudinal ends, such as by compressing or stretching the mask. In this manner, the interference pattern of a light beam passing through the phase mask is also tuned, which allows to control the characteristics of a wavelength filter photoinduced using this phase mask assembly.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 19, 2003
    Applicant: Institut National D'Optique
    Inventors: Jean-Francois Couillard, Francois Trepanier, Chiara Meneghini, Jocelyn Lauzon