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1. 发明申请

WO2007107164A2 AN OPTICAL FIBER, A FIBER LASER, A FIBER AMPLIFIER AND ARTICLES COMPRISING SUCH ELEMENTS 审中-公开
标题翻译：光纤，光纤激光器，光纤放大器和包含这些元件的制品
公开(公告)号：WO2007107164A2
公开(公告)日：2007-09-27
申请号：PCT/DK2007/050034
申请日：2007-03-19
申请人： CRYSTAL FIBRE A/S , BROENG, Jes , PETERSSON, Anders , HANSEN, Kim Per , SKOVGAARD, Peter M. W. , NIELSEN, Martin Dybendal , NIKOLAJSEN, Thomas
发明人： BROENG, Jes , PETERSSON, Anders , HANSEN, Kim Per , SKOVGAARD, Peter M. W. , NIELSEN, Martin Dybendal , NIKOLAJSEN, Thomas
IPC分类号： H01S3/067 , G02B6/036
CPC分类号： H01S3/06754 , G02B6/021 , G02B6/02119 , G02B6/02366 , G02B6/03633 , G02B6/03694 , H01S3/0407 , H01S3/06729 , H01S3/06745 , H01S3/0675 , H01S3/09415
摘要： 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.
摘要翻译：本发明涉及限定纵向方向的光纤，所述光纤包括直径大于10μm的芯，所述芯包括至少两个不同组成的固体区段，至少两个不同组成的固体区段其中一个区段包含光敏材料。芯可以在其横截面方向上和/或在其纵向方向上分段。光纤可以包括写入至少一个所述实芯部分中的布拉格光栅。在优选实施例中，光纤包括具有有效折射率n core的芯和包围所述芯的包层，其中在垂直于所述纵向的横截面中，所述芯被分段，所述芯包括第一芯段和第二芯段，区域a1和具有区域a2的第二核心区段; 所述第一核心节段包括至少一种光敏材料，例如Ge和/或B和/或P掺杂的二氧化硅; 所述第二核心节段围绕所述第一核心节段。

2. 发明申请

WO2005091029A2 OPTICAL COUPLER DEVICES, METHODS OF THEIR PRODUCTION AND USE 审中-公开
标题翻译：光耦合器件及其生产和使用方法
公开(公告)号：WO2005091029A2
公开(公告)日：2005-09-29
申请号：PCT/DK2005/000192
申请日：2005-03-21
申请人： CRYSTAL FIBRE A/S , NIELSEN, Martin Dybendal , SKOVGAARD, Peter, M.W. , BROENG, Jes , VIENNE, Guillaume
发明人： NIELSEN, Martin Dybendal , SKOVGAARD, Peter, M.W. , BROENG, Jes , VIENNE, Guillaume
IPC分类号： G02B6/16
CPC分类号： 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
摘要： 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.
摘要翻译：本发明一般涉及将一个或多个输入波导的光耦合到具有比输入波导或波导的其它物理尺寸和/或光学性质的波导的输出波导或输出部分。本发明涉及一种光子晶体光纤形式的光学部件，用于将具有给定数值孔径的一个部件/系统的光耦合到具有另一个数值孔径的另一部件/系统。本发明还涉及制造光学部件的方法，以及包括光学部件的物品以及光学部件的使用。本发明还涉及一种包括一束输入光纤的光学部件，该束输入光纤被锥形并熔合在一起以形成输入耦合器。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的光束的导模（例如模场直径）的空间延伸的控制。本发明涉及一种锥形纵向延伸的光波导，其具有相对较大的横截面，在一定的纵向距离上，锥形向下延伸至相对较小的横截面，其中导向的空间范围基本上是恒定的或从相对较大的扩展到相对较大的横截面较小的波导截面。本发明可以例如在诸如光纤激光器或放大器的应用中是有用的，其中光必须从泵浦源有效耦合到双包层光纤。

3. 发明申请

WO0212931A2 DISPERSION MANIPULATING FIBRE 审中-公开
标题翻译：分散操作纤维
公开(公告)号：WO0212931A2
公开(公告)日：2002-02-14
申请号：PCT/DK0100511
申请日：2001-07-20
申请人： CRYSTAL FIBRE AS , LIBORI STIG EIGIL BARKOU , BROENG JES , BJARKLEV ANDERS , SOENDERGAARD THOMAS , NIELSEN MARTIN DYBENDAL
发明人： LIBORI STIG EIGIL BARKOU , BROENG JES , BJARKLEV ANDERS , SOENDERGAARD THOMAS , NIELSEN MARTIN DYBENDAL
IPC分类号： G02B6/02 , G02B6/122 , G02B6/00
CPC分类号： G02B6/02323 , B82Y20/00 , G02B6/02233 , G02B6/02242 , G02B6/02333 , G02B6/02338 , G02B6/02347 , G02B6/02357 , G02B6/02361 , G02B6/03611 , G02B6/03627 , G02B6/03633 , G02B6/03688 , G02B6/1225
摘要： Micro-structured optical fibres are improved with respect to increasing the dispersion, both to large negative or large positive values, in a first fibre design in which the fibre has a micro-structured core region being surrounded by a micro-structured cladding region with cladding features being large compared to a predetermined wavelength of light, which can be guided through the fibre. Preferably, the effective index of refraction of the core region, Nco, is larger than the effective index of refraction of the cladding region Ncl, at the predetermined wavelength of light. It is further preferred that the refractive index of one or more of the core features is lower than the refractive index of the core material. Increased dispersion is also obtained by a second optical fibre design in which the fibre has two cladding regions, where the inner cladding region may be micro-structured with inner cladding features and having an effective refrafctive index that is larger than the effective refractive index of the outer cladding region at the operating wavelengths, i.e. the fibre has an inner cladding with a raised effective refractive index. For the second fibre design it is preferred that the outer cladding region is micro-structured with outer cladding features. There is further provided a third optical fibre design, which may be used for non-linear applications, and in which the use of a raised, inner cladding provides the flexibility to obtain fibres with very, small cores and near-zero dispersion over a broad wavelengths range at near-infrared wavelengths. In the third fibre design, the optical fibre has a core region surrounded by an inner cladding region with a number of inner cladding features disposed in an inner cladding material, while the inner cladding region is surrounded by an outer cladding region. In the third design the inner cladding features have a refractive index that differs from the refractive index of the inner cladding material, and the inner cladding region has an effective refractive index Ni that is larger than_the effective refractive index No of the outer cladding region at the operating wavelength. The core region of the third design may be a substantially solid core with an effective refractive index Nco being larger than Ni at the operating wavelength. For the third design, the outer cladding region may also comprise a number of outer cladding features disposed in an outer cladding material, with the outer cladding features having a refractive index that differs from the refractive index of the outer cladding material. For the third fibre design it is preferred that the effective refractive index difference between the core region and the inner cladding region is greater than about 5%.
摘要翻译：关于在第一光纤设计中增加分散度到大的负的或大的正值的微结构光纤被改进，其中光纤具有由具有包层的微结构的包层区域包围的微结构的核心区域特征与可以被引导通过光纤的预定波长的光相比是大的。优选地，核心区域Nco的折射的有效折射率大于在预定波长的光下包层区域Ncl的有效折射率。进一步优选的是，一个或多个芯部特征的折射率低于芯材料的折射率。通过第二光纤设计获得增加的色散，其中光纤具有两个包层区域，其中内包层区域可以是具有内包层特征的微结构并且具有大于有效折射率的有效折射率外包层区域在工作波长，即纤维具有提高的有效折射率的内包层。对于第二光纤设计，优选的是，外包层区域是具有外包层特征的微结构。还提供了第三种光纤设计，其可以用于非线性应用，并且其中使用凸起的内包层提供灵活性以获得具有非常小的芯的纤维和在宽的波长范围在近红外波长。在第三光纤设计中，光纤具有由内包层区域包围的芯区域，内包层特征设置在内包层材料中，而内包层区域被外包层区域包围。在第三设计中，内包层特征具有与内包层材料的折射率不同的折射率，并且内包层区域具有有效折射率Ni，其大于所述外包层区域的有效折射率No 工作波长。第三设计的芯区域可以是在工作波长处具有大于Ni的有效折射率Nco的基本上实心的芯。对于第三设计，外包层区域还可以包括设置在外包层材料中的多个外包层特征，外包层特征具有不同于外包层材料的折射率的折射率。对于第三光纤设计，优选的是，芯区域和内包层区域之间的有效折射率差大于约5％。

4. 发明申请

WO2009003484A2 AN OPTICAL CONNECTOR, AN OPTICAL ASSEMBLY, A LIGHT SOURCE AND A METHOD FOR MANUFACTURING AN OPTICAL CONNECTOR 审中-公开
标题翻译：光学连接器，光学组件，光源和制造光连接器的方法
公开(公告)号：WO2009003484A2
公开(公告)日：2009-01-08
申请号：PCT/DK2008000256
申请日：2008-07-07
申请人： CRYSTAL FIBRE AS , SKOVGAARD PETER M W , NIELSEN MARTIN DYBENDAL , NIKOLAJSEN THOMAS
发明人： SKOVGAARD PETER M W , NIELSEN MARTIN DYBENDAL , NIKOLAJSEN THOMAS
IPC分类号： G02B6/28
CPC分类号： G02B6/2835 , G02B6/023 , G02B6/02366 , H01S3/094003
摘要： The present invention relates to an optical connector having at least one longitudinal axis, said optical connector comprising a first segment having first cross sections perpendicular to the longitudinal axis and a second segment having second cross sections perpendicular to the longitudinal axis said first and second segments sharing a common border interface, whereinsaid said first segment comprises an internal volume with refractive index nv selected from the group of a filling material, a void or a combination thereof, where said internal volume is tapered whereby it is possible to combine light from multiple fiber with reduced loss of brightness.
摘要翻译：本发明涉及具有至少一个纵向轴线的光学连接器，所述光学连接器包括具有垂直于纵向轴线的第一横截面的第一段和具有垂直于纵向轴线的第二横截面的第二段，所述第一和第二段共享其中所述第一段包括从填充材料组，空隙或其组合中选择的折射率nv的内部体积，其中所述内部体积是锥形的，由此可以将来自多根纤维的光与降低亮度损失。

5. 发明申请

WO2007107163A1 AN OPTICAL COUPLER, A METHOD OF ITS FABRICATION AND USE 审中-公开
标题翻译：光学耦合器，其制造和使用的方法
公开(公告)号：WO2007107163A1
公开(公告)日：2007-09-27
申请号：PCT/DK2007/050032
申请日：2007-03-16
申请人： CRYSTAL FIBRE A/S , NIELSEN, Martin Dybendal , SKOVGAARD, Peter M. W.
发明人： NIELSEN, Martin Dybendal , SKOVGAARD, Peter M. W.
IPC分类号： G02B6/28
CPC分类号： G02B6/2856 , G02B6/02333 , G02B6/02338 , G02B6/02347 , G02B6/02357 , G02B6/02366 , G02B6/02376 , G02B6/2551 , G02B6/305 , H01S3/094007 , H01S3/094053 , H01S3/09415
摘要： The invention relates to: An optical coupler for coupling light from at least two input fibres into one output fibre. The invention further relates to a method of fabricating and to the use of an optical coupler. The object of the present invention is to provide an optical coupler, which is relatively easy to manufacture. The problem is solved in that the coupler comprises a) an input section comprising at least two input fibres, which are bundled over a bundling-length and having an output end face at one end of the bundling-length; and b) an output section comprising an output fibre comprising a confining region for confining light propagated in said input fibres and a surrounding cladding region and having an input end face; wherein said output end face of said input section is optically coupled to said input end face of said output section and at least said confining region of said output fibre is tapered down from a first cross sectional area at said input end face to a second, smaller cross sectional area over a tapering-length of said output fibre. This has the advantage that the output section comprises an optical fibre which can be made in easy to handle, appropriate lengths and which can be easily tapered. The invention may e.g. be used in fibre lasers or amplifiers, where efficient coupling of light from a number of pump sources to a single (e.g. double clad) output fibre is needed.
摘要翻译：本发明涉及一种光耦合器，用于将来自至少两个输入光纤的光耦合到一个输出光纤中。本发明还涉及一种制造和使用光耦合器的方法。本发明的目的是提供一种相对容易制造的光耦合器。解决的问题在于耦合器包括：a）输入部分，其包括至少两根输入光纤，该输入光纤捆扎在捆扎长度上并且在捆扎长度的一端具有输出端面; 以及b）输出部分，包括输出光纤，所述输出光纤包括用于限制在所述输入光纤中传播的光的约束区域和包围输入端面的周围包层区域; 其中所述输入部分的所述输出端面光耦合到所述输出部分的所述输入端面，并且所述输出光纤的至少所述约束区域从所述输入端面处的第一横截面积向下逐渐变细到第二较小的所述输出光纤的锥形长度上的横截面积。这具有的优点是输出部分包括可以容易地处理，适当长度并且可以容易地锥形的光纤。本发明可以例如可用于光纤激光器或放大器，其中需要将来自多个泵浦源的光有效耦合到单个（例如双包层）输出光纤。

6. 发明申请

WO2005091029A9 OPTICAL COUPLER DEVICES, METHODS OF THEIR PRODUCTION AND USE 审中-公开
标题翻译：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
申请人： CRYSTAL FIBRE AS , NIELSEN MARTIN DYBENDAL , SKOVGAARD PETER M W , BROENG JES , VIENNE GUILLAUME
发明人： NIELSEN MARTIN DYBENDAL , SKOVGAARD PETER M W , BROENG JES , VIENNE GUILLAUME
IPC分类号： G02B6/02 , G02B6/036 , G02B6/26 , G02B6/28 , H01S3/067 , G02B6/16 , G02B6/22
CPC分类号： 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
摘要： 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.
摘要翻译：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。

7. 发明申请

WO2003100488A1 OPTICAL WAVEGUIDE, METHOD OF ITS PRODUCTION, AND ITS USE 审中-公开
标题翻译：光波导，其生产方法及其使用
公开(公告)号：WO2003100488A1
公开(公告)日：2003-12-04
申请号：PCT/DK2003/000345
申请日：2003-05-23
申请人： CRYSTAL FIBRE A/S , BROENG, Jes , SKOVGAARD, Peter, M., W. , KNUDSEN, Erik , JENSEN, Jesper, Bevensee , NIELSEN, Martin, Dybendal
发明人： BROENG, Jes , SKOVGAARD, Peter, M., W. , KNUDSEN, Erik , JENSEN, Jesper, Bevensee , NIELSEN, Martin, Dybendal
IPC分类号： G02B6/16
CPC分类号： C03B37/0122 , C03B37/01205 , C03B2201/12 , C03B2201/31 , C03B2201/34 , C03B2201/36 , C03B2203/10 , C03B2203/14 , C03B2203/42 , C03B2205/10 , G02B6/02338 , G02B6/02352 , G02B6/02357 , G02B6/02366 , G02B6/02371 , G02B6/0239
摘要： An optical waveguide with a longitudinal direction and a cross-section perpendicular thereto for propagating optical radiation at a free-space wavelength λ, the optical waveguide comprising: a core region (103), a cladding region (100,101,102) surrounding the core region, and a substantially one-dimensional (1D) periodic structure of structural elements with a period Λ; wherein said structural elements comprises cross-sectionally extended continuous elements; use of such an optical waveguide in optical amplifier, a tunable optical amplifier, an optical laser, and a tunable optical laser; a preform for its production; and a method of its production.
摘要翻译：一种具有垂直于其的光波导，用于以自由空间波长λ传播光辐射的光波导，所述光波导包括：芯区域（103），围绕所述芯区域的包层区域（100,101,102），以及具有周期λ的结构元件的基本一维（1D）周期性结构; 其中所述结构元件包括横截面延伸的连续元件; 在光放大器中使用这种光波导，可调谐光放大器，光学激光器和可调谐光学激光器; 用于生产的预成型件; 及其生产方法。

8. 发明申请

WO2009003484A3 A TAPERED FIBRE OPTICAL COUPLER COMPRISING AN ANNULAR GUIDING REGION 审中-公开
公开(公告)号：WO2009003484A3
公开(公告)日：2009-01-08
申请号：PCT/DK2008/000256
申请日：2008-07-07
申请人： CRYSTAL FIBRE A/S , SKOVGAARD, Peter M. W. , NIELSEN, Martin Dybendal , NIKOLAJSEN, Thomas
发明人： SKOVGAARD, Peter M. W. , NIELSEN, Martin Dybendal , NIKOLAJSEN, Thomas
IPC分类号： G02B6/28
摘要： The present invention relates to an optical coupler having at least one longitudinal axis, said optical coupler comprising a first segment having first cross sections perpendicular to the longitudinal axis and a second segment having second cross sections perpendicular to the longitudinal axis said first and second segments sharing a common border interface, whereinsaid said first segment comprises an internal volume with refractive index n v selected from the group of a filling material, a vo.d or a combination thereof, where said internal volume is tapered whereby it is possible to combine light from multiple fiber with reduced loss of brightness.

9. 发明申请

WO2007107164A3 AN OPTICAL FIBER, A FIBER LASER, A FIBER AMPLIFIER AND ARTICLES COMPRISING SUCH ELEMENTS 审中-公开
标题翻译：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
申请人： CRYSTAL FIBRE AS , BROENG JES , PETERSSON ANDERS , HANSEN KIM PER , SKOVGAARD PETER M W , NIELSEN MARTIN DYBENDAL , NIKOLAJSEN THOMAS
发明人： BROENG JES , PETERSSON ANDERS , HANSEN KIM PER , SKOVGAARD PETER M W , NIELSEN MARTIN DYBENDAL , NIKOLAJSEN THOMAS
IPC分类号： H01S3/067 , G02B6/036
CPC分类号： H01S3/06754 , G02B6/021 , G02B6/02119 , G02B6/02366 , G02B6/03633 , G02B6/03694 , H01S3/0407 , H01S3/06729 , H01S3/06745 , H01S3/0675 , H01S3/09415
摘要： 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.
摘要翻译：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。

10. 发明申请

WO2005091029A3 OPTICAL COUPLER DEVICES, METHODS OF THEIR PRODUCTION AND USE 审中-公开
标题翻译：光耦合器件及其生产和使用方法
公开(公告)号：WO2005091029A3
公开(公告)日：2006-01-26
申请号：PCT/DK2005000192
申请日：2005-03-21
申请人： CRYSTAL FIBRE AS , NIELSEN MARTIN DYBENDAL , SKOVGAARD PETER M W , BROENG JES , VIENNE GUILLAUME
发明人： NIELSEN MARTIN DYBENDAL , SKOVGAARD PETER M W , BROENG JES , VIENNE GUILLAUME
IPC分类号： G02B6/02 , G02B6/036 , G02B6/26 , G02B6/28 , H01S3/067
CPC分类号： 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
摘要： 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.

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