Patents by Inventor Alexander Onischenko

Alexander Onischenko 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).

  • Optical waveguide
    Patent number: 7532798
    Abstract: An elongate waveguide for guiding light including a core having an elongate region of relatively low refractive index; a microstructured region around the core comprising elongate regions of relatively low refractive index interspersed with elongate regions of relatively high refractive index; and a boundary at the interface between the core and the microstructured region, the boundary including, in the transverse cross-section, a region of relatively high refractive index, which is connected to the microstructured region at a plurality of nodes, and at least one relatively enlarged region around the boundary, the enlarged region having a major dimension and a minor dimension, wherein the length of the major dimension divided by the length of the minor dimension is more than 3.0.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: May 12, 2009
    Assignee: Crystal Fibre A/S
    Inventors: David Philip Williams, Timothy Adam Birks, Philip St. John Russell, Peter John Roberts, Hendrik Sabert, Alexander Onischenko
  • OPTICAL WAVEGUIDE
    Publication number: 20080138023
    Abstract: An elongate waveguide for guiding light including a core having an elongate region of relatively low refractive index; a microstructured region around the core comprising elongate regions of relatively low refractive index interspersed with elongate regions of relatively high refractive index; and a boundary at the interface between the core and the microstructured region, the boundary including, in the transverse cross-section, a region of relatively high refractive index, which is connected to the microstructured region at a plurality of nodes, and at least one relatively enlarged region around the boundary, the enlarged region having a major dimension and a minor dimension, wherein the length of the major dimension divided by the length of the minor dimension is more than 3.0.
    Type: Application
    Filed: November 2, 2007
    Publication date: June 12, 2008
    Applicant: CRYSTAL FIBRE A/S
    Inventors: David Philip Williams, Timothy Adam Birks, Philip St. John Russell, Peter John Roberts, Hendrik Sabert, Alexander Onischenko
  • Optical waveguide
    Patent number: 7321712
    Abstract: An elongate waveguide for guiding light includes a core having an elongate region of relatively low refractive index; a microstructured region around the core having elongate regions of relatively low refractive index interspersed with elongate regions of relatively high refractive index; and a boundary at the interface between the core and the microstructured region, the boundary including in the transverse cross-section, a region of relatively high refractive index, which is connected to the microstructured region at a plurality of nodes, at least one relatively enlarged region around the boundary (and excluding a boundary having twelve nodes and six enlarged regions substantially at a mid-point between six pairs of relatively more-widely-spaced apart neighboring nodes).
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: January 22, 2008
    Assignee: Crystal Fibre A/S
    Inventors: David Philip Williams, Timothy Adam Birks, Philip St. John Russell, Peter John Roberts, Hendrik Sabert, Alexander Onischenko
  • Optical waveguide
    Publication number: 20050276556
    Abstract: An elongate waveguide for guiding light includes a core having an elongate region of relatively low refractive index; a microstructured region around the core having elongate regions of relatively low refractive index interspersed with elongate regions of relatively high refractive index; and a boundary at the interface between the core and the microstructured region, the boundary including in the transverse cross-section, a region of relatively high refractive index, which is connected to the microstructured region at a plurality of nodes, at least one relatively enlarged region around the boundary (and excluding a boundary having twelve nodes and six enlarged regions substantially at a mid-point between six pairs of relatively more-widely-spaced apart neighboring nodes).
    Type: Application
    Filed: June 20, 2005
    Publication date: December 15, 2005
    Applicant: Crystal Fibre A/S
    Inventors: David Williams, Timothy Birks, Philip Russell, Peter Roberts, Hendrik Sabert, Alexander Onischenko