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    OPTICAL FIBER
    2.
    发明公开
    OPTICAL FIBER 审中-公开

    公开(公告)号：US20240248252A1

    公开(公告)日：2024-07-25

    申请号：US18576972

    申请日：2022-07-01

    申请人： NKT PHOTONICS A/S

    发明人： Mattia MICHIELETTO ,  Martin Erland Vestergaard PEDERSEN ,  Martin MAACK ,  Mette Marie JOHANSEN

    IPC分类号： G02B6/02

    CPC分类号： G02B6/02361 ,  G02B6/02214 ,  G02B6/02333 ,  G02B6/02347

    摘要： An optical fiber for guiding an optical signal, the optical fiber includes: a core region; a cladding region surrounding the core region, the cladding region including an inner cladding region and an outer cladding region, wherein a plurality of the plurality of inner cladding features are of a first type of feature, wherein a plurality of the plurality of inner cladding features are of a second type of feature including an air hole in direct contact with the background material having a refractive index, nb, and wherein the inner cladding features are arranged in a substantially hexagonal lattice and the six nearest neighbors surrounding a first type of feature are of the second type of feature, and wherein no first type of feature is surrounded by less than six nearest neighbors of the second type of feature.

    Tunable pulse width laser
    3.
    再颁专利
    Tunable pulse width laser 有权

    公开(公告)号：USRE50026E1

    公开(公告)日：2024-06-25

    申请号：US16741186

    申请日：2020-01-13

    申请人： NKT Photonics A/S

    发明人： Paulo Almeida ,  John Redvers Clowes ,  Pascal Dupriez ,  Anatoly Borisovich Grudinin

    IPC分类号： H01S3/10 ,  H01S3/067 ,  H01S3/1112 ,  H01S3/13 ,  H01S3/00 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/23

    CPC分类号： H01S3/06754 ,  H01S3/1112 ,  H01S3/0057 ,  H01S3/094003 ,  H01S3/0941 ,  H01S3/1618 ,  H01S3/2383 ,  H01S2301/08

    摘要： A method of tuning the time duration of laser output pulses, the method including spectrally dispersing optical pulses and further comprising providing an optical pulse having a time duration and a spectral bandwidth; spectrally dispersing (243, 245) the optical pulse so as to provide a selected change in the time duration of the pulse responsive to the spectral bandwidth of the pulse; outputting (226) an optical output pulse having a first time duration that is responsive to the selected change in time duration; providing another optical pulse; changing the amount of spectral bandwidth of the another optical pulse (272) to be different than that of the optical pulse or changing the amount of spectral dispersion so that spectrally dispersing the another optical pulse provides a change in time duration that is different than the selected change; and outputting (226) another optical output pulse having a second time duration that is responsive to the different change in time duration, the second time duration of the another optical output pulse being different than the first time duration of the optical output pulse.

    LIGHT SOURCE
    5.
    发明申请
    LIGHT SOURCE 有权

    公开(公告)号：US20230033071A1

    公开(公告)日：2023-02-02

    申请号：US17786775

    申请日：2020-12-21

    申请人： NKT PHOTONICS A/S

    发明人： Thomas Vestergaard ANDERSEN

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

    摘要： 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; and 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.

    Photonic crystal fiber assembly
    8.
    发明授权
    Photonic crystal fiber assembly 有权

    公开(公告)号：US11002919B2

    公开(公告)日：2021-05-11

    申请号：US16775555

    申请日：2020-01-29

    申请人： NKT Photonics A/S

    发明人： Thomas Tanggaard Alkeskjold ,  Jens Kristian Lyngsøe ,  Christian Jakobsen ,  Martin Dybendal Maack ,  Mattia Michieletto ,  Sidsel Rübner Papior

    IPC分类号： G02B6/38 ,  G02B6/02 ,  G02B6/42

    摘要： 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.

    Supercontinuum source
    9.
    发明授权
    Supercontinuum source 有权

    公开(公告)号：US10826264B2

    公开(公告)日：2020-11-03

    申请号：US15431730

    申请日：2017-02-13

    申请人： NKT Photonics A/S

    发明人： John Redvers Clowes ,  Anatoly Borisovich Grudinin ,  Adam Devine

    IPC分类号： G02B6/02 ,  G02B6/26 ,  H01S3/00 ,  H01S3/23 ,  H01S3/067 ,  G02B27/10 ,  G02F1/365 ,  G02B6/28 ,  G02F1/35 ,  H01S3/16 ,  G02B6/028

    摘要： A supercontinuum optical pulse source provides a combined supercontinuum, and can comprise one or more seed pulse sources; first and second optical amplifiers arranged along first and second respective optical paths, wherein the first and second optical amplifiers are configured to amplify one or more optical signals generated by the one or more seed pulse sources; a first microstructured light-guiding member arranged along the first optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the first optical path; a second microstructured light-guiding member arranged along the second optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the second optical path; a supercontinuum-combining member to combine supercontinuum generated in at least the first and second microstructured light-guiding members to form a combined supercontinuum; wherein the supercontinuum-combining member comprises an output fibre, wherein the output fibre comprises a silica-based multimode optical fibre supporting a plurality of spatial modes at one or more wavelengths of the combined supercontinuum; wherein the supercontinuum-combining member has one or more input fibres which support no more than four spatial modes at any wavelength within the combined supercontinuum; and wherein the output fibre of the supercontinuum-combining member supports no more than four spatial modes at any wavelength within the combined supercontinuum.

    SUPERCONTINUUM LIGHT SOURCE COMPRISING TAPERED MICROSTRUCTURED OPTICAL FIBER
    10.
    发明申请
    SUPERCONTINUUM LIGHT SOURCE COMPRISING TAPERED MICROSTRUCTURED OPTICAL FIBER 审中-公开

    公开(公告)号：US20200326474A1

    公开(公告)日：2020-10-15

    申请号：US16797182

    申请日：2020-02-21

    申请人： NKT PHOTONICS A/S

    发明人： Carsten L. THOMSEN ,  Thomas T. ALKESKJOLD ,  Erik B. THOMSEN

    IPC分类号： G02B6/02 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/00 ,  G02F1/35 ,  H01S3/067 ,  G02B6/036 ,  G02F1/365 ,  G01B9/02 ,  H01S3/11

    摘要： 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.