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。

公开(公告)号：WO2007006317A2

公开(公告)日：2007-01-18

申请号：PCT/DK2006050028

申请日：2006-06-28

Applicant: CRYSTAL FIBRE AS ,  NIKOLAJSEN THOMAS

Inventor： NIKOLAJSEN THOMAS

CPC classification number: H01S3/094003 ,  G02B6/02366 ,  G02B6/2817 ,  H01S3/06708 ,  H01S3/06729 ,  H01S3/06783

Abstract: It is an object of the invention to provide a fibre coupler for coupling two or more light sources into a multi-clad (e.g. double clad) optical fibre, which has practical advantages with respect to handling, loss and back reflection. The invention provides an optical component comprising a) a first fibre having a pump core with an NA1, and a first fibre end; b) a number of second fibres surrounding said pump core of said first fibre, at least one of said second fibres has a pump core with an NA2 that is smaller than NA1, said number of second fibres each having a second fibre end; and c) a reflector element comprising an end-facet with a predetermined profile for reflecting light from at least one of said second fibre ends into the pump core of said first fibre. The invention further relates to articles comprising the optical component (e.g. a laser or amplifier), to methods of its production and use. The invention further relates to a rod-type optical fibre with optimized stiffness to volume ratio. The invention may e.g. be useful in applications such as fibre lasers or amplifiers, specifically optical fibre amplifiers where pump light and signal light are propagating in different directions within a double-clad optical fibre.

Abstract translation: 本发明的目的是提供一种用于将两个或多个光源耦合到多包层（例如双包层）光纤中的光纤耦合器，其在处理，损耗和反射反射方面具有实际的优点。 本发明提供了一种光学部件，包括：a）具有带有NA1的泵芯和第一光纤端的第一光纤; b）围绕所述第一纤维的所述泵芯的多个第二纤维，所述第二纤维中的至少一个具有NA1小于NA1的泵芯，所述第二纤维的数量各自具有第二纤维端; 以及c）反射器元件，其包括具有预定轮廓的端面，用于将来自所述第二光纤端中的至少一个的光反射到所述第一光纤的泵芯中。 本发明还涉及包括光学部件（例如激光器或放大器）的制品，其制造和使用方法。 本发明还涉及具有优化的刚度与体积比的棒状光纤。 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，特别是其中泵浦光和信号光在双包层光纤内沿不同方向传播的光纤放大器。

公开(公告)号：WO0241050A2

公开(公告)日：2002-05-23

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 ,  G02B6/00

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: 一种具有包层的微结构纤维，其包括多个细长特征，其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。 包含相对低折射率类型的包层特征的包覆区域与相对较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。 这种类型的光纤可以用于用于高功率传输的中空纤维中的光引导。 特殊的包层结构还可以提供通过光纤引导的光的强正或负色散，使得光纤对于电信应用是有用的。

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

Applicant: CRYSTAL FIBRE AS ,  LIBORI STIG EIGIL BARKOU ,  BROENG JES ,  BJARKLEV ANDERS ,  SOENDERGAARD THOMAS ,  NIELSEN MARTIN DYBENDAL

Inventor： LIBORI STIG EIGIL BARKOU ,  BROENG JES ,  BJARKLEV ANDERS ,  SOENDERGAARD THOMAS ,  NIELSEN MARTIN DYBENDAL

IPC: G02B6/02 ,  G02B6/122 ,  G02B6/00

CPC classification number: 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

Abstract: 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%.

Abstract translation: 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％。

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。}

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。

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。

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

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

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.

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

Applicant: CRYSTAL FIBRE AS ,  SKOVGAARD PETER M W ,  NIELSEN MARTIN DYBENDAL ,  NIKOLAJSEN THOMAS

Inventor： SKOVGAARD PETER M W ,  NIELSEN MARTIN DYBENDAL ,  NIKOLAJSEN THOMAS

IPC: G02B6/28

CPC classification number: G02B6/2835 ,  G02B6/023 ,  G02B6/02366 ,  H01S3/094003

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO03078338A8

公开(公告)日：2004-03-25

申请号：PCT/DK0300182

申请日：2003-03-18

Applicant: CRYSTAL FIBRE AS ,  JAKOBSEN CHRISTIAN ,  VIENNE GUILLAUME ,  HANSEN THEIS PETER

Inventor： JAKOBSEN CHRISTIAN ,  VIENNE GUILLAUME ,  HANSEN THEIS PETER

IPC: C03B37/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/016 ,  C03B37/018 ,  G02B6/16

CPC classification number: C03B37/016 ,  C03B37/01231 ,  C03B37/014 ,  C03B37/01446 ,  C03B37/01486 ,  C03B37/01493 ,  C03B37/018 ,  C03B37/01884 ,  C03B37/01892 ,  C03B2203/10 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/42 ,  G02B6/02295