Patents by Inventor Rostislav Roussev

Rostislav Roussev 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).

  • Polarization-insensitive integrated wavelength converter
    Patent number: 6862130
    Abstract: A polarization-insensitive integrated wavelength converter system includes polarization-separating, polarization-rotating and wavelength-converter structures integrated into a monolithic optical structure. In one embodiment, a lithium niobate waveguide structure includes an integrated polarization separator which comprises two coupled Zinc-diffused and annealed-proton-exchanged waveguides, an electro-optic quarter-wave retarder, a mirror structure and a quasi-phasematching structure. In another embodiment, an electro-optic half-wave retarder and bent waveguide are used in place of the electro-optic quarter-wave retarder and mirror structure. In a further embodiment, an optical circulator is used in conjunction with the waveguide structure in order to discriminate between input and output optical signals.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: March 1, 2005
    Assignee: Lightbit Corporation, Inc.
    Inventors: Robert G. Batchko, Larry R. Marshall, Rostislav Roussev
  • Polarization-insensitive integrated wavelength converter
    Publication number: 20020179912
    Abstract: A polarization-insensitive integrated wavelength converter system includes polarization-separating, polarization-rotating and wavelength-converter structures integrated into a monolithic optical structure. In one embodiment, a lithium niobate waveguide structure includes an integrated polarization separator which comprises two coupled Zinc-diffused and annealed-proton-exchanged waveguides, an electro-optic quarter-wave retarder, a mirror structure and a quasi-phasematching structure. In another embodiment, an electro-optic half-wave retarder and bent waveguide are used in place of the electro-optic quarter-wave retarder and mirror structure. In a further embodiment, an optical circulator is used in conjunction with the waveguide structure in order to discriminate between input and output optical signals.
    Type: Application
    Filed: December 19, 2001
    Publication date: December 5, 2002
    Applicant: Lightbit Corporation, a corporation of the state of Delaware
    Inventors: Robert G. Batchko, Larry R. Marshall, Rostislav Roussev