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    A MICRO-STRUCTURED OPTICAL FIBRE
    1.
    发明申请
    A MICRO-STRUCTURED OPTICAL FIBRE 审中-公开
    微结构光纤

    公开(公告)号：WO0241050A9

    公开(公告)日：2004-05-13

    申请号：PCT/DK0100774

    申请日：2001-11-20

    Applicant: CRYSTAL FIBRE AS ,  LIBORI STIG EIGIL BARKOU ,  BROENG JES ,  BJARKLEV ANDERS OVERGAARD ,  RASMUSSEN CHRISTIAN ,  KNUDSEN ERIK

    Inventor： LIBORI STIG EIGIL BARKOU ,  BROENG JES ,  BJARKLEV ANDERS OVERGAARD ,  RASMUSSEN CHRISTIAN ,  KNUDSEN ERIK

    IPC: C03B37/012 ,  C03B37/027 ,  G02B6/02 ,  G02B6/20 ,  G02B6/18 ,  G02B6/22

    CPC classification number: C03B37/0279 ,  C03B37/0122 ,  C03B37/02781 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/42 ,  C03B2205/08 ,  C03B2205/10 ,  G02B6/023 ,  G02B6/02328 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02385

    Abstract: A microstructured fibre having a cladding comprising a number of elongated features that are arranged to provide concentric circular or polygonial regions surrounding the fibre core. The cladding comprises a plurality of concentric cladding regions, at least some of which comprising cladding features. Cladding regions comprising cladding features of a relatively low index type are arranged alternatingly with cladding regions of a relatively high index type. The cladding features are arranged in a non-periodic manner when viewed in a cross section of the fibre. The cladding enables waveguidance by photonic bandgap effects in the fibre core. An optical fibre of this type may be used for light guidance in hollow core fibres for high power transmission. The special cladding structure may also provide strong positive or negative dispersion of light guided through the fibre - making the fibre useful for telecommunication applications.

    Abstract translation: 一种微结构纤维，其具有包括多个细长特征的包层，所述细长特征被布置成提供围绕纤维芯的同心圆形或多边形区域。 包层包括多个同心包层区域，其中至少一些包括包层特征。 包含相对较低折射率类型的包层特征的包覆区域与相对高折射率类型的包层区域交替布置。 当在纤维的横截面中观察时，包层特征以非周期性方式布置。 该包层通过光纤芯中的光子带隙效应使波导成为可能。 这种光纤可以用于中空芯纤维中用于高功率传输的光引导。 特殊的包层结构还可以提供通过光纤引导的光的强烈的正或负色散，使得光纤可用于电信应用。

    PHOTONIC CRYSTAL FIBRE
    2.
    发明申请
    PHOTONIC CRYSTAL FIBRE 审中-公开
    光电晶体纤维

    公开(公告)号：WO2004019092A1

    公开(公告)日：2004-03-04

    申请号：PCT/DK2003/000550

    申请日：2003-08-19

    Applicant: CRYSTAL FIBRE A/S ,  MORTENSEN, Niels, Asger ,  BROENG, Jes ,  PETERSSON, Anders ,  FOLKENBERG, Jacob, Riis ,  VIENNE, Guillaume

    Inventor： MORTENSEN, Niels, Asger ,  BROENG, Jes ,  PETERSSON, Anders ,  FOLKENBERG, Jacob, Riis ,  VIENNE, Guillaume

    IPC: G02B6/16

    CPC classification number: G02B6/02323 ,  G02B6/02019 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02352 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02371 ,  G02B6/02385

    Abstract: The present invention provides an improved large mode area, single mode or few mode optical fibre that is robust towards loss mechanisms such as bending losses and coupling losses. The optical fiber is aimed for use in transmission of light at at least one optical wavelength, λ. The optical fibre (10) has a longitudinal direction and a cross-section perpendicular thereto. The optical fiber comprises a core region (11) and a micro-structured cladding region. The cladding region surrounds the core region and it comprises micro-structured cladding features (12) that are arranged in a background cladding material (13). A plurality of the micro-structured cladding features has substantially similar size d - typical- ly the cladding features are circular in cross-section and d is equal to the diameter of the cladding features. At least a number of the cladding features are arranged proximal to said core region at a center-to-center cladding feature spacing, h, larger than 3 times λ. The core region is surrounded by more than six innermost cladding elements having a ratio d/h less than 0.45.

    Abstract translation: 本发明提供了一种改进的大模式区域，单模或多模光纤，其对诸如弯曲损耗和耦合损耗的损耗机制是鲁棒的。 该光纤被用于在至少一个光学波长λ的透射中使用。 光纤（10）具有与其垂直的纵向方向和横截面。 光纤包括芯区（11）和微结构的包层区。 包层区域围绕芯区域，并且其包括布置在背景包层材料（13）中的微结构的覆层特征（12）。 多个微结构的包层特征具有基本相似的尺寸d-典型的是，包层特征在横截面上是圆形的，d等于包层特征的直径。 至少多个包层特征被布置在所述纤芯区域的近中心包围特征间距h，大于λ的3倍。 核心区域由比d / h小于0.45的多于六个最内层的包层元件包围。

    IMPROVED ACTIVE OPTICAL FIBERS WITH WAVELENGTH-SELECTIVE FILTERING MECHANISM, METHOD OF PRODUCTION AND THEIR USE
    3.
    发明申请
    IMPROVED ACTIVE OPTICAL FIBERS WITH WAVELENGTH-SELECTIVE FILTERING MECHANISM, METHOD OF PRODUCTION AND THEIR USE 审中-公开
    改进的具有波长选择性滤波机制的活性光纤，生产方法及其使用

    公开(公告)号：WO2007057024A3

    公开(公告)日：2008-08-28

    申请号：PCT/DK2006000646

    申请日：2006-11-20

    Applicant: CRYSTAL FIBRE AS ,  PETERSSON ANDERS ,  BROENG JES ,  KRISTIANSEN RENE ENGEL

    Inventor： PETERSSON ANDERS ,  BROENG JES ,  KRISTIANSEN RENE ENGEL

    IPC: H01S3/067 ,  G02B6/02

    CPC classification number: G02B6/02323 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02366 ,  G02B6/0238 ,  H01S3/06708 ,  H01S2301/02

    Abstract: The invention relates to optical fibers for use in optical amplification of light, such as in optical fiber amplifiers and lasers and for use in delivery of high power light, in particular to a scheme for reducing amplified spontaneous emission at undesired wavelengths. The invention further relates to articles, methods and use. An object of the invention is achieved by a micro- structured optical fiber, which is adapted to guide light by the photonic bandgap effect and to have one or more pass bands and at least one stop- band over a wavelength range from ? stop1 to ? stop2- In an aspect of the invention, the at least one stop-band provides filter functions that suppress nonlinear effects. In another aspect, the core region is actively doped, and the active material has an emission spectrum with a higher value of the emission cross section s E at a wavelength ? ASE between ? stop1 and ? stop2 than outside said wavelength range such that amplified spontaneous emission and lasing within the wavelength range from ? stop1 to ? stop2 is reduced. In still another aspect, the optical fiber exhibits photonic bandgaps at different wavelength ranges in different radial directions of a cross section of the optical fiber.

    Abstract translation: 本发明涉及用于光的光放大的光纤，例如在光纤放大器和激光器中，并且用于传送高功率光，特别是涉及用于减少不需要的波长的放大的自发发射的方案。 本发明还涉及物品，方法和用途。 本发明的目的是通过一种微结构光纤实现的，该微结构光纤适于通过光子带隙效应引导光，并且具有一个或多个通带和至少一个阻带。 stop1至？ stop2-在本发明的一个方面，至少一个阻带提供抑制非线性效应的滤波器功能。 在另一方面，核心区域是有源掺杂的，并且活性材料具有发射截面的发射光谱，其在波长λSUP之间具有较高的ASE stop1和？ stop2比在所述波长范围之外，使得从→<1>的波长范围内的放大的自发发射和激光停止到 stop2减少。 在另一方面，光纤在光纤的横截面的不同径向方向上表现出不同波长范围的光子带隙。

    OPTICAL COUPLER DEVICES, METHODS OF THEIR PRODUCTION AND USE
    4.
    发明申请
    OPTICAL COUPLER DEVICES, METHODS OF THEIR PRODUCTION AND USE 审中-公开
    光耦合器装置，其生产和使用方法

    公开(公告)号：WO2005091029A9

    公开(公告)日：2005-10-27

    申请号：PCT/DK2005000192

    申请日：2005-03-21

    Applicant: CRYSTAL FIBRE AS ,  NIELSEN MARTIN DYBENDAL ,  SKOVGAARD PETER M W ,  BROENG JES ,  VIENNE GUILLAUME

    Inventor： NIELSEN MARTIN DYBENDAL ,  SKOVGAARD PETER M W ,  BROENG JES ,  VIENNE GUILLAUME

    IPC: G02B6/02 ,  G02B6/036 ,  G02B6/26 ,  G02B6/28 ,  H01S3/067 ,  G02B6/16 ,  G02B6/22

    CPC classification number: G02B6/262 ,  G02B6/02004 ,  G02B6/02333 ,  G02B6/02338 ,  G02B6/02357 ,  G02B6/02366 ,  G02B6/02376 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/03688 ,  G02B6/2835 ,  H01S3/06708 ,  H01S3/06729 ,  H01S3/06741 ,  H01S3/06745 ,  H01S3/094007 ,  H01S3/094019

    Abstract: The present invention relates in general to coupling of light from one or more input waveguides to an output waveguide or output section of a waveguide having other physical dimensions and/or optical properties than the input waveguide or waveguides. The invention relates to an optical component in the form of a photonic crystal fibre for coupling light from one component/system with a given numerical aperture to another component/system with another numerical aperture. The invention further relates to methods of producing the optical component, and articles comprising the optical component, and to the use of the optical component. The invention further relates to an optical component comprising a bundle of input fibres that are tapered and fused together to form an input coupler e.g. for coupling light from several light sources into a single waveguide. The invention still further relates to the control of the spatial extension of a guided mode (e.g. a mode-field diameter) of an optical beam in an optical fibre. The invention relates to a tapered longitudinally extending optical waveguide having a relatively larger cross­section that over a certain longitudinal distance is tapered down to a relatively smaller cross section wherein the spatial extent of the guided mode is substantially constant or expanding from the relatively larger to the relatively smaller waveguide cross section. The invention may e.g. be useful in applications such as fibre lasers or amplifiers, where light must be coupled efficiently from pump sources to a double clad fibre.

    Abstract translation: 本发明一般涉及将来自一个或多个输入波导的光耦合到具有除输入波导或波导之外的其他物理尺寸和/或光学特性的波导的输出波导或输出部分。 本发明涉及光子晶体光纤形式的光学部件，用于将来自具有给定数值孔径的一个部件/系统的光耦合到具有另一数值孔径的另一部件/系统。 本发明进一步涉及制造光学部件的方法，以及包括该光学部件的制品以及该光学部件的用途。 本发明还涉及一种光学部件，其包括一束输入光纤，所述输入光纤被渐缩并融合在一起以形成输入耦合器，例如， 用于将来自多个光源的光耦合到单个波导中。 本发明还涉及对光纤中光束的导模（例如模场直径）的空间扩展的控制。 锥形纵向延伸光波导本发明涉及一种具有相对较大横截面的锥形纵向延伸光波导，其在一定的纵向距离上向下逐渐缩小至相对较小的横截面，其中导模的空间范围基本上是恒定的或从相对较大的相对较大 较小的波导横截面。 本发明可以例如 可用于诸如光纤激光器或放大器等应用，其中光源必须从泵浦源高效耦合到双包层光纤。

    A MICRO-STRUCTURED OPTICAL FIBRE
    7.
    发明申请
    A MICRO-STRUCTURED OPTICAL FIBRE 审中-公开

    公开(公告)号：WO2002041050A3

    公开(公告)日：2002-05-23

    申请号：PCT/DK2001/000774

    申请日：2001-11-20

    Applicant: CRYSTAL FIBRE A/S ,  LIBORI. Stig, Eigil, Barkou ,  BROENG, Jes ,  BJARKLEV, Anders, Overgaard ,  RASMUSSEN, Christian ,  KNUDSEN, Erik

    Inventor： LIBORI. Stig, Eigil, Barkou ,  BROENG, Jes ,  BJARKLEV, Anders, Overgaard ,  RASMUSSEN, Christian ,  KNUDSEN, Erik

    IPC: G02B6/20

    Abstract: A microstructured fibre having a cladding comprising a number of elongated features that are arranged to provide concentric circular or polygonial regions surrounding the fibre core. The cladding comprises a plurality of concentric cladding regions, at least some of which comprising cladding features. Cladding regions comprising cladding features of a relatively low index type are arranged alternatingly with cladding regions of a relatively high index type. The cladding features are arranged in a non-periodic manner when viewed in a cross section of the fibre. The cladding enables waveguidance by photonic bandgap effects in the fibre core. An optical fibre of this type may be used for light guidance in hollow core fibres for high power transmission. The special cladding structure may also provide strong positive or negative dispersion of light guided through the fibre - making the fibre useful for telecommunication applications.

    AN OPTICAL FIBER, A FIBER LASER, A FIBER AMPLIFIER AND ARTICLES COMPRISING SUCH ELEMENTS
    8.
    发明申请
    AN OPTICAL FIBER, A FIBER LASER, A FIBER AMPLIFIER AND ARTICLES COMPRISING SUCH ELEMENTS 审中-公开
    光纤，光纤激光器，光纤放大器和包含这些元件的文章

    公开(公告)号：WO2007107164A3

    公开(公告)日：2007-11-08

    申请号：PCT/DK2007050034

    申请日：2007-03-19

    Applicant: CRYSTAL FIBRE AS ,  BROENG JES ,  PETERSSON ANDERS ,  HANSEN KIM PER ,  SKOVGAARD PETER M W ,  NIELSEN MARTIN DYBENDAL ,  NIKOLAJSEN THOMAS

    Inventor： BROENG JES ,  PETERSSON ANDERS ,  HANSEN KIM PER ,  SKOVGAARD PETER M W ,  NIELSEN MARTIN DYBENDAL ,  NIKOLAJSEN THOMAS

    IPC: H01S3/067 ,  G02B6/036

    CPC classification number: H01S3/06754 ,  G02B6/021 ,  G02B6/02119 ,  G02B6/02366 ,  G02B6/03633 ,  G02B6/03694 ,  H01S3/0407 ,  H01S3/06729 ,  H01S3/06745 ,  H01S3/0675 ,  H01S3/09415

    Abstract: The invention relates to an optical fiber defining a longitudinal direction, the optical fiber comprising a core having a diameter larger than 10 µm, said core comprises at least two solid segments of different composition, at least one of the segments comprises a photo-sensitive material. The core may be segmented in its cross-sectional direction and/or in its longitudinal direction. The optical fiber may comprise a Bragg grating written in at least one of said solid core segments. In a preferred embodiment the optical fiber comprises a core with an effective refractive index ncore, and a cladding surrounding said core, wherein in a cross-section perpendicular to said longitudinal direction, said core being segmented, said core comprising a first core segment with an area a1 and a second core segment with an area a2; said first core segment comprises at least one photo-sensitive material, such as Ge and/or B and/or P doped silica; said second core segment surrounds said first core segment.

    Abstract translation: 本发明涉及一种限定纵向方向的光纤，光纤包括直径大于10μm的芯，所述芯包括至少两个不同组成的固体部分，至少一个部分包括光敏材料 。 芯可以在其横截面方向和/或其纵向方向上分段。 光纤可以包括写在至少一个所述实心芯段中的布拉格光栅。 在优选实施例中，光纤包括具有有效折射率ncore的芯和围绕所述芯的包层，其中在垂直于所述纵向方向的横截面中，所述芯被分段，所述芯包括具有第一芯部分 区域a1和具有面积a2的第二芯段; 所述第一核心部分包含至少一种感光材料，例如Ge和/或B和/或P掺杂二氧化硅; 所述第二核心段围绕所述第一核心段。

    IMPROVED ACTIVE OPTICAL FIBERS WITH WAVELENGTH-SELECTIVE FILTERING MECHANISM, METHOD OF PRODUCTION AND THEIR USE
    9.
    发明申请
    IMPROVED ACTIVE OPTICAL FIBERS WITH WAVELENGTH-SELECTIVE FILTERING MECHANISM, METHOD OF PRODUCTION AND THEIR USE 审中-公开
    改进的具有波长选择性滤波机制的活性光纤，生产方法及其使用

    公开(公告)号：WO2007057024A2

    公开(公告)日：2007-05-24

    申请号：PCT/DK2006/000646

    申请日：2006-11-20

    Applicant: CRYSTAL FIBRE A/S ,  PETERSSON, Anders ,  BROENG, Jes ,  KRISTIANSEN, René Engel

    Inventor： PETERSSON, Anders ,  BROENG, Jes ,  KRISTIANSEN, René Engel

    CPC classification number: G02B6/02323 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02366 ,  G02B6/0238 ,  H01S3/06708 ,  H01S2301/02

    Abstract: The invention relates to optical fibers for use in optical amplification of light, such as in optical fiber amplifiers and lasers and for use in delivery of high power light, in particular to a scheme for reducing amplified spontaneous emission at undesired wavelengths. The invention further relates to articles, methods and use. An object of the invention is achieved by a micro- structured optical fiber, which is adapted to guide light by the photonic bandgap effect and to have one or more pass bands and at least one stop- band over a wavelength range from λ stop1 to λ stop2- In an aspect of the invention, the at least one stop-band provides filter functions that suppress nonlinear effects. In another aspect, the core region is actively doped, and the active material has an emission spectrum with a higher value of the emission cross section σ E at a wavelength λ ASE between λ stop1 and λ stop2 than outside said wavelength range such that amplified spontaneous emission and lasing within the wavelength range from λ stop1 to λ stop2 is reduced. In still another aspect, the optical fiber exhibits photonic bandgaps at different wavelength ranges in different radial directions of a cross section of the optical fiber.

    Abstract translation: 本发明涉及用于光的光放大的光纤，例如在光纤放大器和激光器中并用于传送高功率光，特别是涉及用于减少不需要的波长的放大的自发发射的方案。 本发明还涉及物品，方法和用途。 本发明的目的是通过微结构光纤来实现的，该光纤适用于通过光子带隙效应来引导光，并且在波长范围内具有一个或多个通带和至少一个阻带。 stop1至？ stop2-在本发明的一个方面，至少一个阻带提供抑制非线性效应的滤波器功能。 另一方面，核心区域是有源掺杂的，并且活性材料具有发射截面的发射光谱，其在波长λSUP以下的ASE之间的 stop1和？ stop2比在所述波长范围之外，使得在从→停止1到...的波长范围内的放大的自发发射和激光 stop2减少。 在另一方面，光纤在光纤的横截面的不同径向方向上表现出不同波长范围的光子带隙。

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