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：US20220342148A1

公开(公告)日：2022-10-27

申请号：US17856415

申请日：2022-07-01

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.

公开(公告)号：US20220326433A1

公开(公告)日：2022-10-13

申请号：US17545509

申请日：2021-12-08

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 ,  H01S3/067 ,  G02B6/036 ,  G02F1/365 ,  G01B9/02001 ,  G01B9/02091 ,  H01S3/11

Abstract: A microstructured optical fiber for generating supercontinuum light. The optical fiber includes a core and a cladding region surrounding the core. The optical fiber includes a first fiber length section, a second fiber length section as well as an intermediate fiber length section between said first and second fiber length sections. The first fiber length section has a core with a first characteristic core diameter larger than about 7 μm. The second fiber length section has a core with a second characteristic core diameter, smaller than said first characteristic core diameter. The intermediate length section of the optical fiber includes a core which is tapered from said first characteristic core diameter to the second characteristic core diameter over a tapered length. Also, a supercontinuum light source including an optical fiber and a pump light source.

公开(公告)号：US20220233067A1

公开(公告)日：2022-07-28

申请号：US17489254

申请日：2021-09-29

Applicant: NKT PHOTONICS A/S

Inventor： Carsten L. THOMSEN ,  Thomas Vestergaard ANDERSEN ,  Thomas FEUCHTER

IPC: A61B3/00 ,  G02F1/35 ,  A61B3/10 ,  G02F1/365 ,  H01S5/00 ,  H01S5/065

Abstract: A supercontinuum light source can include a seed laser arranged to provide seed pulses with a pulse frequency Fseed; a pulse frequency multiplier (PFM) arranged to multiply the seed pulses by converting pulses having the pulse frequency Fseed to pump pulses with a pulse frequency Fpump, where Fpump is larger than Fseed; and a non-linear element arranged to receive said pump pulses and convert said pump pulses to pulses of supercontinuum light. The PFM can further include a splitter for splitting pulses into first and second sub beams each having the same pulse frequency, where the PFM is configured such that the sub beams experience different delays; and a combiner for combining said first and second sub beams into a beam having the pulse frequency that is greater than said same pulse frequency. The splitter can have an uneven splitter ratio.

公开(公告)号：US20200154993A1

公开(公告)日：2020-05-21

申请号：US16581912

申请日：2019-09-25

Applicant: NKT PHOTONICS A/S

Inventor： Carsten L. THOMSEN ,  Thomas Vestergaard ANDERSEN ,  Thomas FEUCHTER

IPC: A61B3/00 ,  G02F1/35 ,  A61B3/10 ,  G02F1/365 ,  H01S5/00 ,  H01S5/065

Abstract: A supercontinuum light source can include a seed laser arranged to provide seed pulses with a pulse frequency Fseed; a pulse frequency multiplier (PFM) arranged to multiply the seed pulses by converting pulses having the pulse frequency Fseed to pump pulses with a pulse frequency Fpump, where Fpump is larger than Fseed; and a non-linear element arranged to receive said pump pulses and convert said pump pulses to pulses of supercontinuum light. The PFM can further include a splitter for splitting pulses into first and second sub beams each having the same pulse frequency, where the PFM is configured such that the sub beams experience different delays; and a combiner for combining said first and second sub beams into a beam having the pulse frequency that is greater than said same pulse frequency. The splitter can have an uneven splitter ratio.

公开(公告)号：US20190258001A1

公开(公告)日：2019-08-22

申请号：US16254884

申请日：2019-01-23

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

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.

公开(公告)号：US20190049662A1

公开(公告)日：2019-02-14

申请号：US15942908

申请日：2018-04-02

Applicant: NKT PHOTONICS A/S

Inventor： Carsten L. THOMSEN ,  Thomas T. ALKESKJOLD ,  Erik B. THOMSEN

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

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：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。