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1. 发明申请

WO2005059612A1 PHOTONIC CRYSTAL FIBRES COMPRISING STRESS ELEMENTS 审中-公开
标题翻译：包含应力元件的光子晶体纤维
公开(公告)号：WO2005059612A1
公开(公告)日：2005-06-30
申请号：PCT/EP2004/053601
申请日：2004-12-20
申请人： CRYSTAL FIBRE A/S , FOLKENBERG, Jacob Riis , NIELSEN, Martin Dybendal , MORTENSEN, Niels Asger
发明人： FOLKENBERG, Jacob Riis , NIELSEN, Martin Dybendal , MORTENSEN, Niels Asger
IPC分类号： G02B6/16
CPC分类号： G02B6/02347 , C03B37/01217 , C03B37/0122 , C03B2203/14 , C03B2203/31 , C03B2203/42 , G02B6/02314 , G02B6/02352 , G02B6/02357 , G02B6/02361 , G02B6/02366 , G02B6/024 , G02B6/105
摘要： A photonic crystal fibre comprises a core region (251) for propagating light in a longitudinal direction of the fibre, a cladding region (255) surrounding the core region, the cladding region (255) comprising micro-structural elements (254) extending in the longitudinal direction, wherein the cladding region (255) further comprises at least one stress element (252) having a coefficient of thermal expansion α T,SAP and extending in the longitudinal direction of the photonic crystal fibre, the stress elements (252) being located in a cladding background material (255) having a coefficient of thermal expansion α T,cladback different from α T,SAP , and wherein the location of the at least one stress element (252) relative to the core region (251) and the micro-structural elements (254) and the coefficients of thermal expansion α T,SAP and α T,cladback are adapted to provide a stress induced birefringence in the core region (251) of the photonic crystal fibre. The invention may be useful in applications such as polarization maintaining fibres, fibre amplifiers or lasers.
摘要翻译：光子晶体光纤包括用于沿着光纤的纵向传播光的芯区（251），围绕芯区的包层区（255），包含区域（255）包括微结构元件（254），所述微结构元件其中所述包层区域（255）还包括至少一个应力元件（252），所述应力元件（252）具有热膨胀系数αT，SAP并且在所述光子晶体光纤的纵向方向上延伸，所述应力元件（252）位于具有热膨胀系数αT的包层背景材料（255），不同于αT的SAP覆层，并且其中至少一个应力元件（252）相对于芯区域（251）的位置和微结构元件（254），并且热膨胀系数αT，SAP和αT，复合材料适于在光子晶体光纤的芯区域（251）中提供应力诱导双折射。本发明可用于诸如偏振维持光纤，光纤放大器或激光器的应用中。

2. 发明申请

WO2002084350A1 DUAL CORE PHOTONIC CRYSTAL FIBERS (PCF) WITH SPECIAL DISPERSION PROPERTIES 审中-公开
标题翻译：具有特殊分散性的双核光子晶体纤维（PCF）
公开(公告)号：WO2002084350A1
公开(公告)日：2002-10-24
申请号：PCT/DK2002/000245
申请日：2002-04-11
申请人： CRYSTAL FIBRE A/S , LIBORI, Stig, Eigil, Barkou , BROENG, Jes , BJARKLEV, Anders , MORTENSEN, Niels, Asger , JENSEN, Jacob, Riis
发明人： LIBORI, Stig, Eigil, Barkou , BROENG, Jes , BJARKLEV, Anders , MORTENSEN, Niels, Asger , JENSEN, Jacob, Riis
IPC分类号： G02B6/16
CPC分类号： G02B6/03644 , G02B6/02042 , G02B6/02261 , G02B6/0228 , G02B6/02333 , G02B6/02338 , G02B6/02347 , G02B6/02357 , G02B6/02361 , G02B6/02366 , G02B6/02371 , G02B6/0238 , G02B6/03627 , G02B6/03688 , G02B6/29377
摘要： An optical fibre for transmitting light, said optical fibre having an axial direction and a cross section perpendicular to said axial direction, said optical fibre comprising: (1) a first core region comprising a first core material having a refractive index N co,1 ; (2) a microstructured first cladding region surrounding the first core region, said first cladding region comprising a first cladding material and a plurality of spaced apart first cladding features or elements that are elongated in the fibre axial direction and disposed in the first cladding material, said first cladding material having a refractive index N cl,l and each said first cladding feature or element having a refractive index being lower than N cl,1 , whereby a resultant geometrical index N¿ge,cl, 1? of the first cladding region is lowered compared to N cl,1 ; (3) a second core region surrounding said first cladding region, said second core region comprising a second core material having a refractive index N co,2 , and (4) a second cladding region surrounding the second core region, said second cladding region comprising a second cladding material having a refractive index N cl,2 , wherein the first core material, the first cladding material and the first cladding features, the second core material, and the second cladding material are selected and arranged so that N co,1 > N ge,cl,1 , N co,2 > N ge,cl,l , and N co,2 > N cl,2 .
摘要翻译： 1.一种用于透射光的光纤，所述光纤具有轴向和垂直于所述轴向的横截面，所述光纤包括：（1）第一芯区，包括具有折射率Nco的第一芯材料; （2）围绕第一芯区域的微结构化第一包层区域，所述第一包层区域包括第一包层材料和多个间隔开的第一包层特征或在纤维轴向方向上延伸并设置在第一包层材料中的元件，所述第一包层材料具有折射率Ncl，l，并且每个所述第一包层特征或元件具有低于Ncl，1的折射率，由此与Ncl相比，第一包层区域的合成几何指数Nge，cl，1降低，1; （3）围绕所述第一包层区域的第二纤芯区域，所述第二纤芯区域包括具有折射率Nco的第二纤芯材料，以及（4）围绕所述第二纤芯区域的第二包覆区域，所述第二包覆区域包括具有折射率Ncl，2的第二包层材料，其中所述第一芯材料，所述第一包层材料和所述第一包层材料，所述第二芯材料和所述第二包层材料被选择和布置，使得Nco1> Nge，cl ，1，Nco，2> Nge，cl，l和Nco，2> Ncl，2。

3. 发明申请

WO2010127676A1 Hollow-core optical fiber incorporating a metamaterial cladding 审中-公开
标题翻译：掺有超材料包层的中空芯光纤
公开(公告)号：WO2010127676A1
公开(公告)日：2010-11-11
申请号：PCT/DK2010/050099
申请日：2010-05-05
申请人： DANMARKS TEKNISKE UNIVERSITET - DTU , MORTENSEN, Niels Asger , YAN, Min
发明人： MORTENSEN, Niels Asger , YAN, Min
IPC分类号： G02B6/02 , G02B6/00
CPC分类号： G02B6/02342 , G02B6/02347 , G02B6/02361 , G02B6/02366 , G02B6/02371
摘要： An optical fiber (100, 200, 300) for guidance of electromagnetic radiation with an operational wavelength l, the fiber (100, 200, 300) having a longitudinal direction along a longitudinal axis and a transverse direction in a plane perpendicular to the longitudinal axis, the fiber (100, 200, 300) comprising: - a core region comprising a hollow core (101, 201, 301, 401, 501, 601, 801) extending along the longitudinal axis, and - a cladding (102, 202, 302, 402, 502, 602, 802) comprising a first cladding region (220, 320, 420, 520, 620, 820) surrounding the core (101, 201, 301, 401, 501, 601, 801) region and comprising a dielectric background material (222, 322, 422, 522, 622, 822), the first cladding region (220, 320, 420, 520, 620, 820) having a total cross-sectional cladding area, the first cladding region (220, 320, 420, 520, 620, 820) further comprising a number of longitudinally extending cladding elements located in the background material (222, 322, 422, 522, 622, 822) and having a total cross-sectional element area, wherein the first cladding region (220, 320, 420, 520, 620, 820) has a filling fraction f being defined as the ratio between the element area and the cladding area wherein - the cladding elements (221, 321, 421, 521, 621, 821) are made of metal and are oriented substantially parallel to the core (101, 201, 301, 401, 501, 601, 801) region in a transverse distance from the core (101, 201, 301, 401, 501, 601, 801), and wherein the distance L between neighbouring cladding elements (221, 321, 421, 521, 621, 821) is smaller than half the wavelength l, and wherein the cladding elements (221, 321, 421, 521, 621, 821) are arranged so that transverse magnetic radiation with a wavelength of l can propagate through the core (101, 201, 301, 401, 501, 601, 801) region. The invention further relates to a method relating to and the use of the inventive fiber.
摘要翻译：一种用于引导具有工作波长l的电磁辐射的光纤（100,200,300），所述光纤（100,200,300）在垂直于所述纵向轴线的平面中具有沿着纵向轴线和横向方向的纵向方向，所述纤维（100,200,300）包括： - 芯区域，包括沿所述纵向轴线延伸的中空芯体（101,201,301,401,501,601,801），以及 - 包层（102,202，包括围绕所述芯（101,201,301,401,501,601,801）区域的第一包层区域（220,320,420,520,620,820），并且包括介电背景材料（222,322,422,522,622,822），具有总横截面包层区域的第一包层区域（220,320,420,520,620,820），第一包层区域（220，还包括位于所述背景材料（222,322,422,522,622,822）中的多个纵向延伸的包覆元件，并且具有总截面元件面积，其中第一包层区域（220,320,420,520,620,820）具有填充分数f被定义为元件面积和包层面积之间的比率，其中包层元件（221 ，321,421,521,621,821）由金属制成并且基本上平行于与所述芯（101,201）的横向距离的所述芯（101,201,301,401,501,601,801）区域定向，301,401,501,601,801），并且其中相邻包层元件（221,321,421,521,621,821）之间的距离L小于波长l的一半，并且其中包层元件（221， 321,421,521,621,821），使得波长为l的横向磁辐射能够通过芯（101,201,301,401,501,601,801）区域传播。本发明还涉及涉及本发明纤维的方法和使用方法。

4. 发明申请

WO2004019092A1 PHOTONIC CRYSTAL FIBRE 审中-公开
标题翻译：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
申请人： CRYSTAL FIBRE A/S , MORTENSEN, Niels, Asger , BROENG, Jes , PETERSSON, Anders , FOLKENBERG, Jacob, Riis , VIENNE, Guillaume
发明人： MORTENSEN, Niels, Asger , BROENG, Jes , PETERSSON, Anders , FOLKENBERG, Jacob, Riis , VIENNE, Guillaume
IPC分类号： G02B6/16
CPC分类号： G02B6/02323 , G02B6/02019 , G02B6/02338 , G02B6/02347 , G02B6/02352 , G02B6/02357 , G02B6/02361 , G02B6/02371 , G02B6/02385
摘要： 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.
摘要翻译：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。

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