公开(公告)号：US20250052946A1

公开(公告)日：2025-02-13

申请号：US18906325

申请日：2024-10-04

Applicant: NKT Photonics A/S

Inventor： Jens LYNGSØ ,  Cameron SMITH ,  Anders HARPØTH ,  Christian JAKOBSEN ,  Thomas Tanggard ALKESKJOLD ,  Irnis KUBAT

IPC: G02B6/02 ,  G02F1/35 ,  G02F1/365

Abstract: 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.

公开(公告)号：US20220269012A1

公开(公告)日：2022-08-25

申请号：US17744401

申请日：2022-05-13

Applicant: NKT Photonics A/S

Inventor： Thomas Tanggaard ALKESKJOLD ,  Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Martin Dybendal MAACK ,  Mattia MICHIELETTO ,  Sidsel Rübner PAPIOR

IPC: G02B6/38 ,  G02B6/02

Abstract: 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.

公开(公告)号：US20190135679A1

公开(公告)日：2019-05-09

申请号：US16096878

申请日：2017-04-27

Applicant: NKT Photonics A/S

Inventor： Christian JAKOBSEN ,  Harald Roager SIMONSEN ,  Jens Kristian LYNGSØE ,  Mattia MICHIELETTO

IPC: C03B37/012 ,  C03B37/027 ,  C03B37/025 ,  G02B6/02

Abstract: 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.

公开(公告)号：US20200310039A1

公开(公告)日：2020-10-01

申请号：US16775555

申请日：2020-01-29

Applicant: NKT Photonics A/S

Inventor： Thomas Tanggaard ALKESKJOLD ,  Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Martin Dybendal MAACK ,  Mattia MICHIELETTO ,  Sidsel Rübner PAPIOR

IPC: G02B6/38 ,  G02B6/02

Abstract: 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.

公开(公告)号：US20180372961A1

公开(公告)日：2018-12-27

申请号：US16064872

申请日：2016-12-22

Applicant: NKT Photonics A/S

Inventor： Thomas Tanggaard Alkeskjold ,  Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Martin Dybendal Maack ,  Mattia Michieletto ,  Sidsel Rübner Papior

IPC: G02B6/38 ,  G02B6/02 ,  G02B6/36

CPC classification number: G02B6/3833 ,  G02B6/02314 ,  G02B6/02328 ,  G02B6/3813 ,  G02B6/3874 ,  G02B6/4296

Abstract: The invention comprises a photonic crystal fiber (PCF) assembly comprising a PCF and at least one ferrule structure. The PCF has a center axis and comprises a core region and a cladding region and a first fiber end section with a first fiber end. The ferrule structure has a center axis and is mounted to the first fiber end section. The ferrule structure comprises an inner ferrule arrangement and an outer ferrule arrangement surrounding the first fiber end section. The inner ferrule arrangement comprises 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 inner ferrule sections have 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.

公开(公告)号：US20170351023A1

公开(公告)日：2017-12-07

申请号：US15537005

申请日：2015-12-15

Applicant: NKT PHOTONICS A/S

Inventor： 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

IPC: G02B6/036 ,  C03C13/04 ,  C03C25/10 ,  C03B37/027 ,  G02B6/14 ,  G02B6/02 ,  G02F1/365 ,  C03C25/60 ,  G02F1/35

CPC classification number: G02B6/03694 ,  C03B37/02781 ,  C03B37/0279 ,  C03B37/10 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/21 ,  C03B2201/22 ,  C03B2203/14 ,  C03B2203/23 ,  C03B2203/42 ,  C03C13/045 ,  C03C13/046 ,  C03C25/1061 ,  C03C25/1062 ,  C03C25/1068 ,  C03C25/607 ,  C03C2201/02 ,  C03C2201/21 ,  C03C2201/22 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/02395 ,  G02B6/14 ,  G02F1/365 ,  G02F2001/3528

Abstract: The invention concerns 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 comprises a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region comprises 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 comprises hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further comprises 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.

公开(公告)号：US20240319436A1

公开(公告)日：2024-09-26

申请号：US18441046

申请日：2024-02-14

Applicant: NKT Photonics A/S

Inventor： Jens Kristian LYNGSØ ,  Christian JAKOBSEN ,  Jesper Skov GRETLUND ,  Harald R. SIMONSEN

IPC: G02B6/02 ,  C03B37/012 ,  C03C13/04 ,  C03C25/66

CPC classification number: G02B6/02342 ,  C03B37/0122 ,  C03C13/045 ,  C03C25/66 ,  C03B2201/03 ,  C03B2201/20 ,  C03B2201/21 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/42 ,  G02B6/02352 ,  G02B6/02357

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 λ, 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.

公开(公告)号：US20220011501A1

公开(公告)日：2022-01-13

申请号：US17213653

申请日：2021-03-26

Applicant: NKT Photonics A/S

Inventor： Jens Kristian LYNGSØE ,  Christian JAKOBSEN ,  Mattia MICHIELETTO

IPC: G02B6/02

Abstract: 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.

公开(公告)号：US20210323856A1

公开(公告)日：2021-10-21

申请号：US17356620

申请日：2021-06-24

Applicant: NKT Photonics A/S

Inventor： Harald Roager SIMONSEN ,  Christian JAKOBSEN

IPC: C03B37/012 ,  C03B37/027 ,  G02B6/032 ,  C03B37/025

Abstract: 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.

公开(公告)号：US20200319401A1

公开(公告)日：2020-10-08

申请号：US16786027

申请日：2020-02-10

Applicant: NKT PHOTONICS A/S

Inventor： 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

IPC: G02B6/036 ,  C03C25/106 ,  C03C25/1065 ,  C03B37/027 ,  C03B37/10 ,  G02B6/02 ,  C03C13/04 ,  C03C25/607 ,  G02B6/14 ,  G02F1/365

Abstract: 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.