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    Supercontinuum source
    11.
    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

    Applicant: NKT Photonics A/S

    Inventor： John Redvers Clowes ,  Anatoly Borisovich Grudinin ,  Adam Devine

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

    Abstract: 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
    12.
    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

    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 ,  G01B9/02 ,  H01S3/11

    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.

    PHOTONIC CRYSTAL FIBER ASSEMBLY
    13.
    发明申请
    PHOTONIC CRYSTAL FIBER ASSEMBLY 审中-公开

    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.

    DEPOLARIZING HOMOGENIZER
    14.
    发明申请
    DEPOLARIZING HOMOGENIZER 审中-公开

    公开(公告)号：US20200209640A1

    公开(公告)日：2020-07-02

    申请号：US16641468

    申请日：2018-08-24

    Applicant: NKT PHOTONICS A/S

    Inventor： Dmitri OULIANOV ,  Frederik NIELSEN ,  Irnis KUBAT ,  Thomas FEUCHTER ,  Timur ISKHAKOV

    IPC: G02B27/28 ,  G02B27/09 ,  G02F1/1335 ,  G02F1/13357

    Abstract: A depolarizing homogenizer including one or more lenslet arrays, for providing a plurality of beamlets associated with different respective parts of a received beam. The depolarizing homogenizer includes a depolarizer comprising different areas which affect polarization differently, the depolarizer being positioned to cause alteration of the polarization characteristics of at least some of the plurality of beamlets. A lens is arranged to at least partially overlap the beamlets having the altered polarization characteristics.

    Microstructured fiber and supercontinuum light source
    15.
    发明授权
    Microstructured fiber and supercontinuum light source 有权

    公开(公告)号：US10698155B2

    公开(公告)日：2020-06-30

    申请号：US16396802

    申请日：2019-04-29

    Applicant: NKT PHOTONICS A/S

    Inventor： Jens Kristian Lyngsøe ,  Christian Jacobsen

    IPC: G02B6/036 ,  G02B6/02 ,  G02B21/06 ,  G02F1/35 ,  G02B21/00 ,  G02B21/16

    Abstract: A microstructured optical fiber including a core region and a cladding region which surrounds the core region. The cladding region includes a plurality of cladding features within a cladding background material, wherein the cladding region includes an inner cladding region with at least one inner ring of cladding features and an outer cladding region with at least three outer cladding rings of outer cladding features. The inner cladding features have a first characteristic diameter and the outer cladding region includes a plurality of outer cladding features having a characteristic diameter smaller than the first characteristic diameter. The first characteristic diameter is at least about 10% larger than an average diameter of the outer cladding features and the core region has a diameter of at least about 2 μm. A cascade optical fiber with at least one fiber as described, as well as a source of optical supercontinuum generation.

    MICROSTRUCTURED FIBER AND SUPERCONTINUUM LIGHT SOURCE
    16.
    发明申请
    MICROSTRUCTURED FIBER AND SUPERCONTINUUM LIGHT SOURCE 审中-公开

    公开(公告)号：US20190324197A1

    公开(公告)日：2019-10-24

    申请号：US16396802

    申请日：2019-04-29

    Applicant: NKT PHOTONICS A/S

    Inventor： Jens Kristian LYNGSØE ,  Christian JACOBSEN

    IPC: G02B6/02 ,  G02B21/06

    Abstract: A microstructured optical fiber including a core region and a cladding region which surrounds the core region. The cladding region includes a plurality of cladding features within a cladding background material, wherein the cladding region includes an inner cladding region with at least one inner ring of cladding features and an outer cladding region with at least three outer cladding rings of outer cladding features. The inner cladding features have a first characteristic diameter and the outer cladding region includes a plurality of outer cladding features having a characteristic diameter smaller than the first characteristic diameter. The first characteristic diameter is at least about 10% larger than an average diameter of the outer cladding features and the core region has a diameter of at least about 2 μm. A cascade optical fiber with at least one fiber as described, as well as a source of optical supercontinuum generation.

    Supercontinuum light source
    17.
    发明授权
    Supercontinuum light source 有权

    公开(公告)号：US10441158B2

    公开(公告)日：2019-10-15

    申请号：US15980177

    申请日：2018-05-15

    Applicant: NKT PHOTONICS A/S

    Inventor： Carsten L. Thomsen ,  Thomas Vestergaard Andersen ,  Thomas Feuchter

    IPC: A61B3/00 ,  A61B3/02 ,  A61B3/10 ,  G02F1/35 ,  G02F1/365 ,  H01S5/00 ,  H01S5/065 ,  G02B27/09

    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. The disclosure includes other embodiments as well.

    PHOTONIC CRYSTAL FIBER ASSEMBLY
    18.
    发明申请
    PHOTONIC CRYSTAL FIBER ASSEMBLY 审中-公开

    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.

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