Patents by Inventor Christian Toinen

Christian Toinen 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).

  • Process for manufacturing a monomode optical waveguide made of a polymer and endowed with electrooptic properties, and such an optical waveguide
    Patent number: 5182783
    Abstract: The invention relates to a process for manufacturing a monomode cylindrical optical waveguide made of a polymer and endowed with electrooptic properties.According to the invention, the manufacturing process comprises the following steps:producing a cylindrical core rod (11) by polymerization of a mixture comprising a core polymer and an electrooptically active organic substance,forming a first preform (10 ) by coating the core rod (11) by means of an optical cladding (12) formed by a cladding polymer,fitting said first preform (10) into a first jacket (20) constituted by a jacket polymer,producing a second preform (30) by drawing the first jacket (20),fitting the second preform (30) into a second jacket (40) made of a jacket polymer,producing means (41, 42, 43, 44) for positioning electrodes for excitation of the active substance,fiber drawing the second jacket (40) until the core diameter (d.sub.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: January 26, 1993
    Assignee: France Telecom
    Inventors: Dominique Bosc, Martine Guilbert, Christian Toinen