Patents by Inventor Christian Waltermann

Christian Waltermann 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).

  • Publication number: 20210181021
    Abstract: The present invention relates to an apparatus for optical applications, a spectrometer system and method for producing an apparatus for optical applications, and in particular to an apparatus comprising an optical waveguide having a first refractive index along a light propagation axis interrupted by a plurality of scattering portions having a second refractive index. Each scattering portion has a long axis substantially perpendicular to the light propagation axis as well as a short axis substantially perpendicular to the light propagation axis and the long axis. A receiver unit or a transmitter unit is arranged on a side of the optical waveguide, the long axis being substantially perpendicular, i.e. normal to the plane of this side on which the receiver unit or transmitter unit is arranged. Accordingly, simplification and miniaturization of an optical apparatus can be realized.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 17, 2021
    Applicant: FiSens GmbH
    Inventor: Christian Waltermann
  • Patent number: 10969541
    Abstract: A method for determining a curvature and/or torsion of an optical waveguide of a fibre-optic sensor, comprising at least two Bragg gratings introduced into the optical waveguide and extending through a common cross-sectional plane, situated in a radial direction, through the optical waveguide, wherein the Bragg gratings are introduced in the core and/or on the boundary between the core and the cladding and/or in an inner edge region of the cladding within an evanescence region of the light, the method comprising: providing reference data of intensities of reflected light portions of light coupled into the optical waveguide, in particular depending on known reference deformations of the optical waveguide, measuring at least one light intensity of reflected light portions of light coupled into the optical waveguide, wherein the optical waveguide has a deformation to be determined, and determining the deformation by comparing the light intensity with the reference data.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: April 6, 2021
    Assignees: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Photonik Inkubator GmbH
    Inventors: Wolfgang Schade, Martin Angelmahr, Christian Waltermann
  • Patent number: 10962415
    Abstract: The present invention relates to an apparatus for optical applications, a spectrometer system and method for producing an apparatus for optical applications, and in particular to an apparatus comprising an optical waveguide having a first refractive index along a light propagation axis interrupted by a plurality of scattering portions having a second refractive index. Each scattering portion has a long axis substantially perpendicular to the light propagation axis as well as a short axis substantially perpendicular to the light propagation axis and the long axis. A receiver unit or a transmitter unit is arranged on a side of the optical waveguide, the long axis being substantially perpendicular, i.e. normal to the plane of this side on which the receiver unit or transmitter unit is arranged. Accordingly, simplification and miniaturization of an optical apparatus can be realized.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: March 30, 2021
    Assignee: FiSens GmbH
    Inventor: Christian Waltermann
  • Publication number: 20200018647
    Abstract: The present invention relates to an apparatus for optical applications, a spectrometer system and method for producing an apparatus for optical applications, and in particular to an apparatus comprising an optical waveguide having a first refractive index along a light propagation axis interrupted by a plurality of scattering portions having a second refractive index. Each scattering portion has a long axis substantially perpendicular to the light propagation axis as well as a short axis substantially perpendicular to the light propagation axis and the long axis. A receiver unit or a transmitter unit is arranged on a side of the optical waveguide, the long axis being substantially perpendicular, i.e. normal to the plane of this side on which the receiver unit or transmitter unit is arranged. Accordingly, simplification and miniaturization of an optical apparatus can be realized.
    Type: Application
    Filed: February 20, 2018
    Publication date: January 16, 2020
    Applicant: FiSens GmbH
    Inventor: Christian Waltermann
  • Patent number: 10330866
    Abstract: An optical component comprising at least one first waveguide having a first core and a casing surrounding the first core, and comprising at least one second waveguide having a second core, wherein the first core and the second core are guided adjacent and at a distance to one another in a longitudinal section, and at least one Bragg grating is arranged in said longitudinal section, and at least the first core, the first casing the second core and the Bragg grating are arranged in a single substrate.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: June 25, 2019
    Assignees: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., BAKER HUGHES INTEQ GMBH
    Inventors: Wolfgang Schade, Michael Köhring, Christian Waltermann, Konrad Bethmann, Thomas Kruspe, Sebastian Jung, Gunnar Tackmann
  • Publication number: 20190170930
    Abstract: A method for determining a curvature and/or torsion of an optical waveguide of a fibre-optic sensor, comprising at least two Bragg gratings introduced into the optical waveguide and extending through a common cross-sectional plane, situated in a radial direction, through the optical waveguide, wherein the Bragg gratings are introduced in the core and/or on the boundary between the core and the cladding and/or in an inner edge region of the cladding within an evanescence region of the light, the method comprising: providing reference data of intensities of reflected light portions of light coupled into the optical waveguide, in particular depending on known reference deformations of the optical waveguide, measuring at least one light intensity of reflected light portions of light coupled into the optical waveguide, wherein the optical waveguide has a deformation to be determined, and determining the deformation by comparing the light intensity with the reference data.
    Type: Application
    Filed: August 8, 2017
    Publication date: June 6, 2019
    Applicants: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Photonik Inkubator GmbH
    Inventors: Wolfgang Schade, Martin Angelmahr, Christian Waltermann
  • Patent number: 10247583
    Abstract: A fiber optic sensor may be provided comprising an optical waveguide having at least one first core and a cladding surrounding the first core, wherein the first core extends substantially over the entire length of the optical waveguide and at least one Bragg grating is introduced into the first core, wherein the Bragg grating has an elongated cross section, wherein the short semi-axis is smaller than the diameter of the first core and the center of gravity of the cross section of the at least one Bragg grating lies on the axis of symmetry of the optical waveguide. A method may be provided for determining torsion with such a sensor. A method for the production of such a sensor may be provided.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: April 2, 2019
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Wolfgang Schade, Christian Waltermann
  • Publication number: 20180329139
    Abstract: An optical component comprising at least one first waveguide having a first core and a casing surrounding the first core, and comprising at least one second waveguide having a second core, wherein the first core and the second core are guided adjacent and at a distance to one another in a longitudinal section, and at least one Bragg grating is arranged in said longitudinal section, and at least the first core, the first casing the second core and the Bragg grating are arranged in a single substrate.
    Type: Application
    Filed: November 14, 2016
    Publication date: November 15, 2018
    Applicants: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Baker Hughes Inteq GmbH
    Inventors: Wolfgang Schade, Michael Köhring, Christian Waltermann, Konrad Bethmann, Thomas Kruspe, Sebastian Jung, Gunnar Tackmann
  • Publication number: 20170160109
    Abstract: A fiber optic sensor may be provided comprising an optical waveguide having at least one first core and a cladding surrounding the first core, wherein the first core extends substantially over the entire length of the optical waveguide and at least one Bragg grating is introduced into the first core, wherein the Bragg grating has an elongated cross section, wherein the short semi-axis is smaller than the diameter of the first core and the center of gravity of the cross section of the at least one Bragg grating lies on the axis of symmetry of the optical waveguide. A method may be provided for determining torsion with such a sensor. A method for the production of such a sensor may be provided.
    Type: Application
    Filed: June 23, 2015
    Publication date: June 8, 2017
    Inventors: Wolfgang Schade, Christian Waltermann