公开(公告)号：USRE50238E1

公开(公告)日：2024-12-17

申请号：US17574175

申请日：2022-01-12

Applicant: NKT PHOTONICS A/S

Inventor： Carsten L. Thomsen ,  Thomas Vestergaard Andersen

IPC: G02F1/365 ,  A61B1/06 ,  F21V8/00 ,  G02B6/02 ,  H01S3/30 ,  G02B6/42 ,  G02B6/44 ,  G02F1/35

Abstract: A supercontinuum light source includes a microstructured optical fiber, and a feeding unit arranged for feeding pump pulses to the microstructured optical fiber, wherein the feeding unit comprises a picosecond laser and one or more amplifiers, wherein the microstructured optical fiber is a silica fiber wherein at least a part of the core being of silica or doped silica, and including a core including core material and a cladding surrounding the core, and at least the core material is loaded with deuterium to have an OD absorption peak around 1870 nm, wherein the feeding unit is spliced to the microstructured optical fiber.

公开(公告)号：US20240272515A1

公开(公告)日：2024-08-15

申请号：US18631570

申请日：2024-04-10

Applicant: NKT Photonics A/S

Inventor： Carsten L. THOMSEN

IPC: G02F1/365 ,  A61B1/06 ,  G02B6/02 ,  G02B6/42 ,  G02B6/44 ,  G02F1/35 ,  H01S3/30

CPC classification number: G02F1/365 ,  A61B1/06 ,  G02B6/0006 ,  G02B6/02319 ,  G02B6/02342 ,  H01S3/302 ,  G02B6/02333 ,  G02B6/4296 ,  G02B6/44382 ,  G02F1/3528

Abstract: A method of making a microstructured optical fiber including loading the core and cladding materials of the fiber with hydrogen and deuterium at a loading temperature; annealing the fiber at a selected temperature Tanneal; pumping the fiber with radiation; and reducing the temperature of the fiber and storing the fiber at the reduced temperature before the step of pumping the fiber; and wherein the method allows the hydrogen and the deuterium to become bound to the core material and the cladding material.

公开(公告)号：US20240219295A1

公开(公告)日：2024-07-04

申请号：US18555438

申请日：2022-04-11

Applicant: NKT Photonics A/S

Inventor： Peter Moselund ,  Rasmus Engelsholm ,  Erik Nicolai Christensen

IPC: G01N21/17 ,  G02F1/365

CPC classification number: G01N21/1702 ,  G02F1/365 ,  G01N2021/1706 ,  G01N2201/06113 ,  G01N2201/088

Abstract: Disclosed is an optical system for monitoring a parameter, such as a density or a pressure, of a fluid, in particular a gas or a mixture of gases, in a hollow core of an optical fiber, wherein the optical system comprises: an optical fiber which comprises a hollow core that is filled with a fluid, a pulsed laser for providing pulsed laser light, which is input into a first end of the optical fiber such that the laser light propagates through the hollow core from the first end to a second end of the fiber, wherein the pulsed laser light is configured to induce nonlinear processes by interacting with the fluid in the hollow core, and wherein the optical system further comprises a monitoring device for detecting acoustic vibrations in the fiber and for determining a parameter of the fluid based on the acoustic vibrations.

公开(公告)号：US20240201562A1

公开(公告)日：2024-06-20

申请号：US18555408

申请日：2022-04-11

Applicant: NKT Photonics A/S

Inventor： Peter Moselund

IPC: G02F1/365 ,  G02F1/35

CPC classification number: G02F1/365 ,  G02F1/3528

Abstract: A fiber arrangement, in particular for providing broadband light, preferably in the ultraviolet frequency range, comprises: a hollow core optical fiber (11), and at least one housing (15) having a chamber (27) in which a piezo device (25) is arranged, the piezo device (25) having a variable length and the chamber (27) being in fluid communication with a hollow core (13) of the fiber (11) such that a change of length of the piezo device (25) causes a change of the size of a volume (23) which is provided by the hollow core (13) and the chamber (27) for a fluid, such as a gas or a mixture of gases.

公开(公告)号：US11977255B2

公开(公告)日：2024-05-07

申请号：US18301648

申请日：2023-04-17

Applicant: NKT Photonics A/S

Inventor： Jens Kristian Lyngsøe ,  Christian Jakobsen ,  Mattia Michieletto

IPC: G02B6/02 ,  G02B6/42

CPC classification number: G02B6/02328 ,  G02B6/02338 ,  G02B6/02366 ,  G02B6/02371 ,  G02B6/4206 ,  G02B6/4296

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：US20240106198A1

公开(公告)日：2024-03-28

申请号：US18326298

申请日：2023-05-31

Applicant: NKT PHOTONICS A/S

Inventor： Jens E. PEDERSEN ,  Poul VARMING ,  Christian V. POULSEN ,  Thomas O. FAGERHØJ ,  Bjarke GØTH ,  Henrik SØRENSEN

IPC: H01S5/0687 ,  G01B9/02001 ,  H01S3/23 ,  H01S5/02251 ,  H01S5/065 ,  H01S5/14

CPC classification number: H01S5/0687 ,  G01B9/02001 ,  H01S3/2391 ,  H01S5/02251 ,  H01S5/0654 ,  H01S5/141 ,  H01S5/4087

Abstract: A laser device includes a laser configured to generate laser light and a laser control module configured to receive at least a portion of the laser light generated by the laser, to generate a control signal and to feed the control signal back to the laser for stabilizing the frequency, wherein the laser control module includes a tunable frequency discriminating element which is preferably continuously frequency tunable, and where the laser control module is placed outside the laser cavity.

公开(公告)号：US20230384512A1

公开(公告)日：2023-11-30

申请号：US18326562

申请日：2023-05-31

Applicant: NKT PHOTONICS A/S

Inventor： Johannes WEIRICH ,  Martin Dybendal MAACK

IPC: G02B6/02 ,  G02B6/024 ,  A61B5/00 ,  G01B9/02091 ,  G02B6/28 ,  G02B6/293 ,  G02B21/00 ,  G02B23/24

CPC classification number: G02B6/02357 ,  G02B6/02347 ,  G02B6/024 ,  A61B5/0066 ,  G01B9/02091 ,  G02B6/02361 ,  G02B6/2821 ,  G02B6/2938 ,  G02B6/29389 ,  G02B21/0032 ,  G02B23/2469 ,  H01S3/2308

Abstract: A delivery fiber assembly suitable for delivering broad band light and including a delivery fiber and a connector member. The delivery fiber has a length, an input end for launching light, and a delivery end. The delivery fiber includes along its length a core region and a cladding region surrounding the core region, the cladding region includes a cladding background material having a refractive index Nbg and a plurality of microstructures in the form of inclusions of solid material having refractive index up to Ninc and extending in the length of the longitudinal axis of the delivery fiber, wherein Ninc

公开(公告)号：US20230305222A1

公开(公告)日：2023-09-28

申请号：US18320911

申请日：2023-05-19

Applicant: NKT Photonics A/S

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

IPC: G02B6/02 ,  G02F1/365

CPC classification number: G02B6/02338 ,  G02B6/02342 ,  G02F1/365 ,  C03B2201/12 ,  C03B2201/22 ,  C03B2201/28 ,  C03B2201/32 ,  G02F1/3528

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：US11698484B2

公开(公告)日：2023-07-11

申请号：US16632932

申请日：2018-07-24

Applicant: NKT Photonics A/S

Inventor： Jens Lyngsø ,  Cameron Smith ,  Anders Harpøth ,  Christian Jakobsen ,  Thomas Tanggard Alkeskjold ,  Imis Kubat

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

CPC classification number: G02B6/02338 ,  G02B6/02342 ,  G02F1/365 ,  C03B2201/12 ,  C03B2201/22 ,  C03B2201/28 ,  C03B2201/32 ,  G02F1/3528

Abstract: A supercontinuum source, comprises 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 comprising 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：US20230170659A1

公开(公告)日：2023-06-01

申请号：US17921765

申请日：2021-04-27

Applicant: NKT PHOTONICS A/S

Inventor： Michael YARROW

IPC: H01S3/00 ,  H01S3/23 ,  G02B27/10

CPC classification number: H01S3/0057 ,  H01S3/0085 ,  H01S3/2316 ,  G02B27/106

Abstract: An optical pulse generator arranged to generate an initial sequence of optical pulses having an initial inter-pulse period; and an optical pulse burst formation apparatus including: an interleaving stage to receive an initial sequence of optical pulses having an initial inter-pulse period, including: an optical splitter to power split received optical pulses, thereby generating a first and second replica sequences of optical pulses; a first optical arm to receive the first replica sequence, having a first optical path length; and a second optical arm to receive the second replica sequence, having a second optical path length, different to the first optical path length by a path length difference; and an optical combiner arranged to combine the first replica sequence of pulses and the second replica sequence of delayed pulses to form an output sequence of optical pulse bursts.