Patents by Inventor Jesper Skov Gretlund

Jesper Skov Gretlund 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).

  • Laser system using low-chlorine hollow core optical fiber
    Patent number: 11947160
    Abstract: An optical fiber having an axial direction and a cross section perpendicular to the axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength ?, and includes a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature including a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: April 2, 2024
    Assignee: NKT PHOTONICS A/S
    Inventors: Jens Kristian Lyngsø, Christian Jakobsen, Jesper Skov Gretlund, Harald R. Simonsen
  • OPTICAL FIBER WITH IMPROVEMENTS RELATING TO LOSS AND ITS USE, METHOD OF ITS PRODUCTION AND USE THEREOF
    Publication number: 20230161100
    Abstract: An optical fiber having an axial direction and a cross section perpendicular to the axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength ?, and includes a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature including a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
    Type: Application
    Filed: January 5, 2023
    Publication date: May 25, 2023
    Applicant: NKT Photonics A/S
    Inventors: Jens Kristian Lyngsø, Christian Jakobsen, Jesper Skov Gretlund, Harald R. Simonsen
  • Optical fiber with low chlorine concentration improvements relating to loss and its use, method of its production and use thereof
    Patent number: 11573366
    Abstract: An optical fiber having an axial direction and a cross section perpendicular to the axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength ?, and includes a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature including a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: February 7, 2023
    Assignee: NKT PHOTONICS A/S
    Inventors: Jens Kristian Lyngsø, Christian Jakobsen, Jesper Skov Gretlund, Harald R. Simonsen
  • OPTICAL FIBER WITH IMPROVEMENTS RELATING TO LOSS AND ITS USE, METHOD OF ITS PRODUCTION AND USE THEREOF
    Publication number: 20220373733
    Abstract: An optical fiber having an axial direction and a cross section perpendicular to the axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength ?, and includes a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature including a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
    Type: Application
    Filed: June 21, 2022
    Publication date: November 24, 2022
    Applicant: NKT PHOTONICS A/S
    Inventors: Jens Kristian LYNGSØ, Christian JAKOBSEN, Jesper Skov GRETLUND, Harald R. SIMONSEN
  • Microstructured hollow core optical fiber using low chlorine concentration
    Patent number: 11402572
    Abstract: The invention relates to an optical fiber having an axial direction and a cross section perpendicular to said axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength ?, and comprises a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature comprising a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: August 2, 2022
    Assignee: NKT PHOTONICS A/S
    Inventors: Jens Kristian Lyngsø, Christian Jakobsen, Jesper Skov Gretlund, Harald R. Simonsen
  • OPTICAL FIBER WITH IMPROVEMENTS RELATING TO LOSS AND ITS USE, METHOD OF ITS PRODUCTION AND USE THEREOF
    Publication number: 20100266251
    Abstract: The invention relates to an optical fiber having an axial direction and a cross section perpendicular to said axial direction, and a method and preform for producing such an optical fiber. The optical fiber is adapted to guide light at a wavelength ?, and comprises a core region, an inner cladding region surrounding said core region, and at least one of a first type of feature comprising a void and a surrounding first silica material. The core, the inner cladding region and the first type of feature extends along said axial direction over at least a part of the length of the optical fiber. The first silica material has a first chlorine concentration of about 300 ppm or less.
    Type: Application
    Filed: March 4, 2010
    Publication date: October 21, 2010
    Applicant: Crystal Fibre A/S
    Inventors: Jens Kristian LYNGSØ, Christian JAKOBSEN, Jesper Skov Gretlund, Harald R. SIMONSEN