Patents by Inventor Christian Jakobsen
Christian Jakobsen 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).
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Publication number: 20250237807Abstract: A hollow core photonic crystal fiber (PCF) including an outer cladding region and seven hollow tubes surrounded by the outer cladding region. Each of the hollow tubes is fused to the outer cladding to form a ring defining an inner cladding region and a hollow core region surrounded by the inner cladding region. The hollow tubes are not touching each other but are arranged with distance to adjacent hollow tubes. The hollow tubes each have an average outer diameter d2 and an average inner diameter d1, wherein d1/d2 is equal to or larger than about 0.8, such as equal to or larger than about 0.85, such as equal to or larger than about 0.9. Also, a laser system.Type: ApplicationFiled: April 10, 2025Publication date: July 24, 2025Applicant: NKT PHOTONICS A/SInventors: Jens Kristian Lyngsøe, Christian Jakobsen, Mattia Michieletto
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Publication number: 20250208338Abstract: 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: ApplicationFiled: March 11, 2025Publication date: June 26, 2025Applicant: NKT PHOTONICS A/SInventors: Jens Kristian LYNGSØ, Christian JAKOBSEN, Jesper Skov GRETLUND, Harald R. SIMONSEN
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Patent number: 12313877Abstract: A hollow core photonic crystal fiber (PCF) including an outer cladding region and seven hollow tubes surrounded by the outer cladding region. Each of the hollow tubes is fused to the outer cladding to form a ring defining an inner cladding region and a hollow core region surrounded by the inner cladding region. The hollow tubes are not touching each other but are arranged with distance to adjacent hollow tubes. The hollow tubes each have an average outer diameter d2 and an average inner diameter d1, wherein d1/d2 is equal to or larger than about 0.8, such as equal to or larger than about 0.85, such as equal to or larger than about 0.9. Also, a laser system.Type: GrantFiled: February 28, 2024Date of Patent: May 27, 2025Assignee: NKT Photonics A/SInventors: Jens Kristian Lyngsøe, Christian Jakobsen, Mattia Michieletto
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Patent number: 12276829Abstract: 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: GrantFiled: February 14, 2024Date of Patent: April 15, 2025Assignee: NKT PHOTONICS A/SInventors: Jens Kristian Lyngsø, Christian Jakobsen, Jesper Skov Gretlund, Harald R. Simonsen
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Publication number: 20250067924Abstract: A Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and includes a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region includes a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF includes hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further includes a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below Th, wherein Th is at least about 50° C., preferably 50° C.<Th<250° C.Type: ApplicationFiled: November 13, 2024Publication date: February 27, 2025Applicant: NKT Photonics A/SInventors: Thomas Tanggaard ALKESKJOLD, Casper Laur BYG, Christian Jakobsen, Jens Kristian LYNGSØE, Kim G. JESPERSEN, Jeppe JOHANSEN, Martin Dybendal MAACK, Martin Erland Vestergaard PEDERSEN, Carsten L. THOMSEN
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Publication number: 20250052946Abstract: A supercontinuum source including a pump source and a supercontinuum generator configured for receiving electromagnetic radiation derived from the pump source and for generating supercontinuum radiation, the supercontinuum generator including a nonlinear microstructured optical fibre having a core region comprising silica. The core region includes a dopant selected to reduce light-induced non-bridging oxygen hole centre loss in the nonlinear microstructured optical fibre.Type: ApplicationFiled: October 4, 2024Publication date: February 13, 2025Applicant: NKT Photonics A/SInventors: Jens LYNGSØ, Cameron SMITH, Anders HARPØTH, Christian JAKOBSEN, Thomas Tanggard ALKESKJOLD, Irnis KUBAT
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Publication number: 20240425404Abstract: A method of producing a microstructured optical fiber is disclosed. The method includes providing a preform and drawing the preform. The preform has a center axis, a length and a first end and a second end and has at least one longitudinal hole extending lengthwise. The method includes inserting a first end of a pressure tube into the hole of the preform at the first end of the preform and subjecting the hole of the preform to a controlled pressure via the pressure tube during the drawing.Type: ApplicationFiled: September 9, 2024Publication date: December 26, 2024Inventors: Christian Jakobsen, Harald Roager Simonsen, Jens Kristian Lyngsøe, Mattia Michieletto
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Patent number: 12169303Abstract: A Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and includes a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region includes a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF includes hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further includes a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below Th, wherein Th is at least about 50° C., preferably 50° C.<Th<250° C.Type: GrantFiled: June 19, 2023Date of Patent: December 17, 2024Assignee: NKT PHOTONICS A/SInventors: Thomas Tanggaard Alkeskjold, Casper Laur Byg, Christian Jakobsen, Jens Kristian Lyngsøe, Kim G. Jespersen, Jeppe Johansen, Martin Dybendal Maack, Martin Erland Vestergaard Pedersen, Carsten L. Thomsen
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Patent number: 12135453Abstract: A supercontinuum source including a pump source and a supercontinuum generator configured for receiving electromagnetic radiation derived from the pump source and for generating supercontinuum radiation, the supercontinuum generator including a nonlinear microstructured optical fibre having a core region comprising silica. The core region includes a dopant selected to reduce light-induced non-bridging oxygen hole centre loss in the nonlinear microstructured optical fibre.Type: GrantFiled: May 19, 2023Date of Patent: November 5, 2024Assignee: NKT PHOTONICS A/SInventors: Jens Lyngsø, Cameron Smith, Anders Harpøth, Christian Jakobsen, Thomas Tanggard Alkeskjold, Irnis Kubat
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Patent number: 12117654Abstract: A photonic crystal fiber (PCF) assembly including a PCF and at least one ferrule structure. The PCF includes a core region and a cladding region and a first fiber end section with a first fiber end. The ferrule structure is mounted to the first fiber end section. The ferrule structure includes an inner ferrule arrangement and an outer ferrule arrangement surrounding the first fiber end section. The inner ferrule arrangement includes an inner ferrule front section proximally to the first fiber end and an inner ferrule rear section distally to the first fiber end, and each of the sections has an inner diameter and in at least a length thereof fully surrounds the PCF. The inner ferrule rear section is anchored in an anchor length section to the first fiber end section and the inner ferrule front section supports the first fiber end section proximally to the first fiber end.Type: GrantFiled: October 24, 2023Date of Patent: October 15, 2024Assignee: NKT Photonics A/SInventors: Thomas Tanggaard Alkeskjold, Jens Kristian Lyngsøe, Christian Jakobsen, Martin Dybendal Maack, Mattia Michieletto, Sidsel Rübner Papior
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Patent number: 12110248Abstract: A method of producing a microstructured optical fiber is disclosed. The method includes providing a preform and drawing the preform. The preform has a center axis, a length and a first end and a second end and has at least one longitudinal hole extending lengthwise. The method includes inserting a first end of a pressure tube into the hole of the preform at the first end of the preform and subjecting the hole of the preform to a controlled pressure via the pressure tube during the drawing.Type: GrantFiled: April 27, 2017Date of Patent: October 8, 2024Assignee: NKT Photonics A/SInventors: Christian Jakobsen, Harald Roager Simonsen, Jens Kristian Lyngsøe, Mattia Michieletto
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Publication number: 20240319436Abstract: 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: ApplicationFiled: February 14, 2024Publication date: September 26, 2024Applicant: NKT Photonics A/SInventors: Jens Kristian LYNGSØ, Christian JAKOBSEN, Jesper Skov GRETLUND, Harald R. SIMONSEN
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Patent number: 12098088Abstract: A preform element, its production, and fiber production methods from preform assemblies. The preform element has a length and a center axis along its length, a first and second end defined by its length and an outer preform element surface. The preform element includes a plurality of longitudinal structures disposed to form longitudinal hole(s) in a background material. At least one slot extending from its outer preform element surface and intersecting at least one of the longitudinal holes, wherein the at least one slot does not fully intersect the preform element. The preform element may be a preform center element or a preform ring element and may be assembled to a form part of a preform assembly for an optical fiber.Type: GrantFiled: June 24, 2021Date of Patent: September 24, 2024Assignee: NKT Photonics A/SInventors: Harald Roager Simonsen, Christian Jakobsen
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Publication number: 20240201434Abstract: A hollow core photonic crystal fiber (PCF) including an outer cladding region and seven hollow tubes surrounded by the outer cladding region. Each of the hollow tubes is fused to the outer cladding to form a ring defining an inner cladding region and a hollow core region surrounded by the inner cladding region. The hollow tubes are not touching each other but are arranged with distance to adjacent hollow tubes. The hollow tubes each have an average outer diameter d2 and an average inner diameter d1, wherein d1/d2 is equal to or larger than about 0.8, such as equal to or larger than about 0.85, such as equal to or larger than about 0.9. Also, a laser system.Type: ApplicationFiled: February 28, 2024Publication date: June 20, 2024Inventors: Jens Kristian Lyngsøe, Christian Jakobsen, Mattia Michieletto
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Patent number: 11977255Abstract: A hollow core photonic crystal fiber (PCF) including an outer cladding region and seven hollow tubes surrounded by the outer cladding region. Each of the hollow tubes is fused to the outer cladding to form a ring defining an inner cladding region and a hollow core region surrounded by the inner cladding region. The hollow tubes are not touching each other but are arranged with distance to adjacent hollow tubes. The hollow tubes each have an average outer diameter d2 and an average inner diameter d1, wherein d1/d2 is equal to or larger than about 0.8, such as equal to or larger than about 0.85, such as equal to or larger than about 0.9. Also, a laser system.Type: GrantFiled: April 17, 2023Date of Patent: May 7, 2024Assignee: NKT Photonics A/SInventors: Jens Kristian Lyngsøe, Christian Jakobsen, Mattia Michieletto
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Publication number: 20240111087Abstract: A Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and includes a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region includes a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF includes hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further includes a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below Th, wherein Th is at least about 50° C., preferably 50° C.<Th<250° C.Type: ApplicationFiled: June 19, 2023Publication date: April 4, 2024Applicant: NKT Photonics A/SInventors: Thomas Tanggaard ALKESKJOLD, Casper Laur BYG, Christian Jakobsen, Jens Kristian LYNGSØE, Kim G. JESPERSEN, Jeppe JOHANSEN, Martin Dybendal MAACK, Martin Erland Vestergaard PEDERSEN, Carsten L. THOMSEN
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Patent number: 11947160Abstract: 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: GrantFiled: January 5, 2023Date of Patent: April 2, 2024Assignee: NKT PHOTONICS A/SInventors: Jens Kristian Lyngsø, Christian Jakobsen, Jesper Skov Gretlund, Harald R. Simonsen
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Publication number: 20240053545Abstract: A photonic crystal fiber (PCF) assembly including a PCF and at least one ferrule structure. The PCF includes a core region and a cladding region and a first fiber end section with a first fiber end. The ferrule structure is mounted to the first fiber end section. The ferrule structure includes an inner ferrule arrangement and an outer ferrule arrangement surrounding the first fiber end section. The inner ferrule arrangement includes an inner ferrule front section proximally to the first fiber end and an inner ferrule rear section distally to the first fiber end, and each of the sections has an inner diameter and in at least a length thereof fully surrounds the PCF. The inner ferrule rear section is anchored in an anchor length section to the first fiber end section and the inner ferrule front section supports the first fiber end section proximally to the first fiber end.Type: ApplicationFiled: October 24, 2023Publication date: February 15, 2024Inventors: Thomas Tanggaard Alkeskjold, Jens Kristian Lyngsøe, Christian Jakobsen, Martin Dybendal Maack, Mattia Michieletto, Sidsel Rübner Papior
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Patent number: 11846809Abstract: A photonic crystal fiber (PCF) assembly including a PCF and at least one ferrule structure. The PCF includes a core region and a cladding region and a first fiber end section with a first fiber end. The ferrule structure is mounted to the first fiber end section. The ferrule structure includes an inner ferrule arrangement and an outer ferrule arrangement surrounding the first fiber end section. The inner ferrule arrangement includes an inner ferrule front section proximally to the first fiber end and an inner ferrule rear section distally to the first fiber end, and each of the sections has an inner diameter and in at least a length thereof fully surrounds the PCF. The inner ferrule rear section is anchored in an anchor length section to the first fiber end section and the inner ferrule front section supports the first fiber end section proximally to the first fiber end.Type: GrantFiled: May 13, 2022Date of Patent: December 19, 2023Assignee: NKT PHOTONICS A/SInventors: Thomas Tanggaard Alkeskjold, Jens Kristian Lyngsøe, Christian Jakobsen, Martin Dybendal Maack, Mattia Michieletto, Sidsel Rübner Papior
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Publication number: 20230305222Abstract: A supercontinuum source including a pump source and a supercontinuum generator configured for receiving electromagnetic radiation derived from the pump source and for generating supercontinuum radiation, the supercontinuum generator including a nonlinear microstructured optical fibre having a core region comprising silica. The core region includes a dopant selected to reduce light-induced non-bridging oxygen hole centre loss in the nonlinear microstructured optical fibre.Type: ApplicationFiled: May 19, 2023Publication date: September 28, 2023Applicant: NKT Photonics A/SInventors: Jens LYNGSØ, Cameron SMITH, Anders HARPØTH, Christian JAKOBSEN, Thomas Tanggard ALKESKJOLD, Irnis KUBAT