公开(公告)号：US09958606B2

公开(公告)日：2018-05-01

申请号：US15362531

申请日：2016-11-28

Applicant: NKT PHOTONICS A/S

Inventor： Carsten L. Thomsen ,  Thomas T. Alkeskjold ,  Erik B. Thomsen

IPC: G02B6/02 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/00 ,  G02F1/35 ,  G02B6/036 ,  G02F1/365 ,  H01S3/067 ,  G01B9/02 ,  H01S3/11 ,  H01S3/113 ,  H01S3/131 ,  H01S3/16

CPC classification number: G02B6/02376 ,  G01B9/02007 ,  G01B9/02091 ,  G02B6/02214 ,  G02B6/02333 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/03633 ,  G02F1/353 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2202/32 ,  H01S3/0092 ,  H01S3/06725 ,  H01S3/06741 ,  H01S3/06745 ,  H01S3/094076 ,  H01S3/09415 ,  H01S3/11 ,  H01S3/113 ,  H01S3/1312 ,  H01S3/1611

Abstract: The invention relates to a supercontinuum light source comprising a microstructured optical fiber and a pump light source. The microstructured optical fiber comprises a core and a cladding region surrounding the core, as well as a first fiber length section, a second fiber length section and an intermediate fiber length section between said first and second fiber length sections. The first fiber length section comprises a core with a first characteristic core diameter. The second fiber length section comprises a core with a second characteristic core diameter, smaller than said first characteristic core diameter, where said second characteristic core diameter is substantially constant along said second fiber length section. The intermediate length section of the optical fiber comprises a core which is tapered from said first characteristic core diameter to said second characteristic core diameter over a tapered length.

公开(公告)号：US20170324216A1

公开(公告)日：2017-11-09

申请号：US15602432

申请日：2017-05-23

Applicant: NKT PHOTONICS A/S

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

IPC: H01S5/0687 ,  H01S3/23 ,  G01B9/02 ,  H01S5/022 ,  H01S5/065 ,  H01S5/14 ,  H01S5/40

CPC classification number: H01S5/0687 ,  G01B9/02001 ,  H01S3/2391 ,  H01S5/02284 ,  H01S5/0654 ,  H01S5/141 ,  H01S5/4087 ,  H01S2301/02

Abstract: A laser device includes a tunable laser having a laser cavity and a laser control module placed outside the laser cavity, the tunable laser being configured to generate laser light having a center frequency, the laser control module being 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 an interferometer having interferometer mirrors and a tunable interferometer length, and wherein the interferometer length is tunable by an actuator arranged between the interferometer mirrors and by thermal variation.

公开(公告)号：US20160170136A1

公开(公告)日：2016-06-16

申请号：US14903762

申请日：2014-07-07

Applicant: NKT PHOTONICS A/S

Inventor： Jeppe JOHANSEN ,  Ole BANG ,  Casper LARSEN ,  Thomas FEUCHTER ,  Carsten L. THOMSEN ,  Thomas Vestergaard ANDERSEN

IPC: G02B6/02 ,  G02F1/365 ,  G01B9/02 ,  H01S3/094 ,  H01S3/11 ,  G02B6/255 ,  H01S3/067

CPC classification number: G02B6/02376 ,  G01B9/02091 ,  G02B6/02214 ,  G02B6/02333 ,  G02B6/02347 ,  G02B6/02361 ,  G02B6/255 ,  G02F1/353 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2202/32 ,  H01S3/06725 ,  H01S3/06729 ,  H01S3/094042 ,  H01S3/094076 ,  H01S3/1106

Abstract: The invention relates to a microstructured optical fiber for generating incoherent supercontinuum light upon feeding of pump light. The microstructured optical fiber has a first section and a second section. A cross-section through the second section perpendicularly to a longitudinal axis of the fiber has a second relative size of microstructure elements and preferably a second pitch that is smaller than a blue edge pitch for the second relative size of microstructure elements. The invention also relates to an incoherent supercontinuum source comprising a microstructured optical fiber according to the invention.

Abstract translation: 本发明涉及一种用于在馈送泵浦光时产生非相干超连续光的微结构光纤。 微结构光纤具有第一部分和第二部分。 通过垂直于纤维的纵向轴线的第二部分的横截面具有微结构元件的第二相对尺寸，并且优选地具有小于用于第二相对尺寸的微结构元件的蓝色边缘间距的第二间距。 本发明还涉及包含根据本发明的微结构光纤的非相干超连续谱源。

公开(公告)号：US20150192732A1

公开(公告)日：2015-07-09

申请号：US14416887

申请日：2013-07-22

Applicant: NKT Photonics A/S

Inventor： Peter Morten Moselund

IPC: G02B6/02 ,  G02B6/38

CPC classification number: G02B6/02214 ,  G02B6/02252 ,  G02B6/0228 ,  G02F1/3513 ,  G02F1/353 ,  G02F1/365 ,  G02F2001/3528

Abstract: The invention relates to a supercontinuum source comprising a pump light source arranged to emit pump light and a nonlinear fiber having a core arranged to receive the pump light. The supercontinuum comprises infrared wavelengths generated in the nonlinear fiber from the pump light. The nonlinear fiber has a dispersion profile comprising—a zero dispersion wavelength,—a positive peak value at a peak wavelength longer than the zero dispersion wavelength,—a minimum value of dispersion at a minimum wavelength longer than the peak wavelength. The pump light is arranged to comprise substantial energy at one or more preferred pump wavelengths which are 10 nm longer than the zero dispersion wavelength or more, The invention also relates to a supercontinuum pump source comprising a nonlinear fiber having a core comprising a fluoride glass and having a core diameter smaller than 7 μm, where the fiber has a numerical aperture of more than 0.26

Abstract translation: 本发明涉及一种超连续谱源，包括布置成发射泵浦光的泵浦光源和具有布置成接收泵浦光的核心的非线性光纤。 超连续谱包括在来自泵浦光的非线性光纤中产生的红外波长。 非线性光纤具有包括零色散波长的色散曲线，在比零色散波长长的峰值波长处的正峰值， - 比峰值波长更长的最小波长处的色散的最小值。 泵浦光被布置成在一个或多个优选的泵浦波长处包括比零色散波长长10nm的实质能量或更多。本发明还涉及一种超连续谱泵源，其包括非线性光纤，其具有包含氟化物玻璃的芯和 芯径小于7μm，其中光纤的数值孔径大于0.26

公开(公告)号：US20140233592A1

公开(公告)日：2014-08-21

申请号：US14220851

申请日：2014-03-20

Applicant: NKT Photonics A/S

Inventor： Charles Scott BUCHTER

IPC: H01S3/30 ,  G02F1/365

CPC classification number: H01S3/302 ,  G02F1/365 ,  G02F2001/3528 ,  H01S3/067 ,  H01S3/30

Abstract: A tunable light includes a super continuum light source and a non-linear crystal, the super continuum light source comprising a pump source and a generator fiber, the generator fiber having an input end and an output end, and the super continuum light source and the non-linear crystal being arranged so that at least a part of output light emitted from the output end of the generator fiber is brought into interaction with the non-linear crystal under an angle of incidence φ relative to a surface of the non-linear crystal.

Abstract translation: 可调光包括超连续光源和非线性晶体，超连续光源包括泵浦源和发生器光纤，发光光纤具有输入端和输出端，以及超连续光源和 非线性晶体被布置成使得从发生器光纤的输出端发射的至少一部分输出光在入射角与非线性晶体相互作用的同时， 相对于非线性晶体的表面。

公开(公告)号：US20250076729A1

公开(公告)日：2025-03-06

申请号：US18952250

申请日：2024-11-19

Applicant: NKT Photonics A/S

Inventor： Thomas Vestergaard ANDERSEN

IPC: G02F1/365 ,  G01J3/10 ,  H01S3/00 ,  H01S3/10 ,  H01S3/13

Abstract: A light source including: a pulse generator for providing a first sequence of light pulses, the first sequence of light pulses including a first number of light pulses within a predetermined time period, a manipulator configured to generate a second sequence of light pulses from the first sequence of light pulses, the second sequence of light pulses having a second number of light pulses within the predetermined time period, the second number being different from the first number, and a nonlinear optical element arranged to receive the second sequence of light pulses.

公开(公告)号：US20250013032A1

公开(公告)日：2025-01-09

申请号：US18888757

申请日：2024-09-18

Applicant: NKT Photonics A/S

Inventor： Frederik D. NIELSEN ,  Carsten L. THOMSEN ,  Weidong SHENG ,  Erik H. THOMSEN

IPC: G02B26/00 ,  G01J3/10 ,  G01N21/64 ,  G02B5/20 ,  G02B27/00 ,  G02F1/11

Abstract: A filter for filtering a broadband beam and in one embodiment a fluorescence measurement system comprising such a filter. The system includes a broadband light source arranged to provide a broadband beam, a first tunable element arranged to filter at least a portion of the broadband beam thereby providing filtered light and a control unit arranged to provide a control signal to the first tunable element. In one embodiment the first tunable element is an acousto-optic filter (AOTF) and the control signal to the AOTF is an acoustic RF signal provided by a Voltage Controlled Oscillator (VCO) arranged so the AOTF provide a high out-of-band suppression.

公开(公告)号：US20240411202A1

公开(公告)日：2024-12-12

申请号：US18736889

申请日：2024-06-07

Applicant: NKT Photonics A/S

Inventor： Thomas Vestergaard ANDERSEN

IPC: G02F1/35 ,  G02F1/365 ,  H01S3/00

Abstract: A light source including: a pulse generator for providing an initial sequence of light pulses, the pulse generator including an optical source for producing optical pulses; a modulator in communication with the optical source for increasing or decreasing the selected number of pulses provided by the pulse generator in the selected time period; first and second optical arms, for propagating, respectively, first and second sequences of light pulses, wherein the first optical arm includes a first manipulator configured to generate the first sequence of light pulses from the initial sequence of light pulses, wherein the light source includes a nonlinear optical element arranged to receive the first sequence of light pulses or the second sequence of light pulses, and an optical switch arranged to switch either the first sequence of light pulses or the second sequence of light pulses for reception by the nonlinear optical element.

公开(公告)号：US12117654B2

公开(公告)日：2024-10-15

申请号：US18493548

申请日：2023-10-24

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 ,  G02B6/42

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

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：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.