Patents by Inventor Stephen L. Loguov

Stephen L. Loguov 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).

  • Photothermal optical switch and variable attenuator
    Publication number: 20030031402
    Abstract: An optical device which utilizes a photothermal optical effect to achieve switching or attenuation includes a waveguide defined by a waveguide core and a surrounding cladding, wherein the polymer waveguide core includes a region consisting of a photothermally responsive material having an absorption coefficient at a switch wavelength or attenuation wavelength that is higher than an absorption coefficient at a signal wavelength. Switching devices include an optical splitter circuit having a branch that includes the photothermally responsive material, and either a multiplexer for introducing light at the switch wavelength into the optical circuit or a light source focused at the photothermally responsive material. Attenuating devices include a Mach-Zehnder type interferometer having a branch that includes the photothermally responsive material and either a multiplexer for introducing light at the attenuation wavelength into the optical circuit or a light source focused at the photothermally responsive material.
    Type: Application
    Filed: November 30, 2000
    Publication date: February 13, 2003
    Inventors: Michael E. DeRosa, Celine C. Guermeur, Stephen L. Loguov, Marc Moroni, Guilhem M. Vidiella
  • Photothermal optical switch and variable attenuator
    Patent number: 6493478
    Abstract: An optical device which utilizes a photothermal optical effect to achieve switching or attenuation includes a waveguide defined by a waveguide core and a surrounding cladding, wherein the polymer waveguide core includes a region consisting of a photothermally responsive material having an absorption coefficient at a switch wavelength or attenuation wavelength that is higher than an absorption coefficient at a signal wavelength. Switching devices include an optical splitter circuit having a branch that includes the photothermally responsive material, and either a multiplexer for introducing light at the switch wavelength into the optical circuit or a light source focused at the photothermally responsive material. Attenuating devices include a Mach-Zehnder type interferometer having a branch that includes the photothermally responsive material and either a multiplexer for introducing light at the attenuation wavelength into the optical circuit or a light source focused at the photothermally responsive material.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: December 10, 2002
    Assignee: Corning Incorporated
    Inventors: Michael E. DeRosa, Celine C. Guermeur, Stephen L. Loguov, Marc Moroni, Guilhem M. Vidiella