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    • 1. 发明申请
    • LIGHT DISTRIBUTION SYSTEM COMPRISING SPECTRAL CONVERSION MEANS
    • 包含光谱转换装置的光分配系统
    • WO2012136219A1
    • 2012-10-11
    • PCT/DK2012/050106
    • 2012-04-03
    • DANMARKS TEKNISKE UNIVERSITET - DTUPETERSEN, Paul MichaelBJARKLEV, Anders
    • PETERSEN, Paul MichaelBJARKLEV, Anders
    • G02B6/00
    • G02B6/0005G02B6/0003G02B6/02366
    • System (200, 300) for the distribution of white light, having a supply side (201, 301, 401) and a delivery side (202, 302, 402), the system being configured for guiding light with a multitude of visible wavelengths in a propagation direction P from the supply side to the distribution side, the system comprising a transport fibre (210, 310, 330, 410, 410a–d) and a spectral conversion fibre (220, 320, 420ad, 500, 600, 700), the transport fibre having a length extending from a first end (211, 311, 331) to a second end (212, 312, 332), and a spectral transmission characteristics,the transport fibre being operationally connected to the spectral conversion fibre having a length extending from an input end (221, 321)to an output end (222, 322), the spectral conversion fibre comprising a photoluminescent agent (511, 611, 711) for converting light of a first wavelength to light of a second, longer wavelength,a spectral conversion characteristics of the spectral conversion fibre being essentially determined by the spectral absorption and emission properties of the photoluminescent agent, the amount of photo- luminescent agent,and the distribution of the photoluminescent agent in the spectral conversion fibre, wherein the first and second wavelengths are selected according to the spectral transmission characteristics of the transport fibre such that transmission loss in the transport fibre at the first wavelength is less than at the second wavelength. According to further aspects, a method of providing a light distribution system and a method of correcting the spectral transmission characteristics of a light distribution system are disclosed.
    • 用于分配白光的系统(200,300),具有供应侧(201,301,401)和输送侧(202,302,402),所述系统被配置为用于引导具有多个可见波长的光 传播方向P从供给侧到分布侧,该系统包括传输光纤(210,310,330,410,410a-d)和光谱转换光纤(220,320,420ad,500,600,700) ,所述传输光纤具有从第一端(211,311,331)延伸到第二端(212,312,332)的长度,以及光谱传输特性,所述传输光纤可操作地连接到具有 该长度从输入端(221,321)延伸到输出端(222,322),所述光谱转换光纤包括用于将第一波长的光转换成第二波长的光的光致发光剂(511,611,711) 波长,光谱转换光纤的光谱转换特性是必需的 y,其由光致发光剂的光谱吸收和发射性质,光致发光剂的量和光致变色光纤在光谱转换光纤中的分布决定,其中第一和第二波长根据光谱传输特性 传输光纤使得第一波长的传输光纤中的传输损耗小于第二波长处的传输损耗。 根据其它方面,公开了一种提供配光系统的方法和校正配光系统的光谱透射特性的方法。
    • 4. 发明申请
    • DUAL CORE PHOTONIC CRYSTAL FIBERS (PCF) WITH SPECIAL DISPERSION PROPERTIES
    • 具有特殊分散性的双核光子晶体纤维(PCF)
    • WO2002084350A1
    • 2002-10-24
    • PCT/DK2002/000245
    • 2002-04-11
    • CRYSTAL FIBRE A/SLIBORI, Stig, Eigil, BarkouBROENG, JesBJARKLEV, AndersMORTENSEN, Niels, AsgerJENSEN, Jacob, Riis
    • LIBORI, Stig, Eigil, BarkouBROENG, JesBJARKLEV, AndersMORTENSEN, Niels, AsgerJENSEN, Jacob, Riis
    • G02B6/16
    • G02B6/03644G02B6/02042G02B6/02261G02B6/0228G02B6/02333G02B6/02338G02B6/02347G02B6/02357G02B6/02361G02B6/02366G02B6/02371G02B6/0238G02B6/03627G02B6/03688G02B6/29377
    • 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 .
    • 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。
    • 6. 发明申请
    • NOVEL PHOTONIC BANDGAP FIBRE, AND USE THEREOF
    • 新型光电胶带纤维及其用途
    • WO2002101429A2
    • 2002-12-19
    • PCT/DK2002/000390
    • 2002-06-07
    • CRYSTAL FIBRE A/SBROENG, JesLIBORI, Stig, Eigil, BarkouBJARKLEV, Anders
    • BROENG, JesLIBORI, Stig, Eigil, BarkouBJARKLEV, Anders
    • G02B6/00
    • C03B37/0122C03B37/01217C03B2201/31C03B2203/42G02B6/02323G02B6/02338G02B6/02347G02B6/0238G02B6/0239G02B6/105
    • An object of the present invention is to provide new designs of microstructured optical fibres that may be fabricated without use of voids, such as fibres being realized using silica and silica doping techniques. The invention relates to a mircrostructured optical fibre that guides light in a core region (52), where the fibre has a cladding region that comprises a background material (51) and a number of cladding features or elements (50) that are elongated in the longitudinal direction of the fibre and have a higher refractive index than the cladding background material. The core region has a lower effective refractive index than the cladding, and the fibre may guide light in the core by photonic bandgap effects. The present invention provides designs of photonic bandgap fibres that may operate without the use of voids in the cladding, thereby simplifiying fabrication of photonic bandgap fibres compared to prior art. The invention further provides photonic bandgap fibers with tuneable waveguiding properties, such as tuneable polarization. The invention further relates to a number of specific fibre designs that provide improvements with respect to dispersion characteristics, mode field diameters, propagation losses, polarizaton mode dispersion and other issues of relevance to optical communication systems.
    • 本发明的目的是提供可以在不使用空隙的情况下制造的微结构光纤的新设计,例如使用二氧化硅和二氧化硅掺杂技术实现的纤维。 本发明涉及一种引导光在芯区域(52)中的光的微小结构光纤,其中光纤具有包括背景材料(51)的包层区域和在该区域中细长的多个包层特征或元件(50) 并且具有比包层背景材料更高的折射率。 核心区域具有比包层更低的有效折射率,并且光纤可以通过光子带隙效应来引导芯中的光。 本发明提供可以在包层中不使用空隙的情况下操作的光子带隙光纤的设计,从而与现有技术相比,简化了光子带隙光纤的制造。 本发明还提供具有可调波导特性的光子带隙光纤,例如可调偏振。 本发明还涉及提供关于色散特性,模场直径,传播损耗,极化模式色散和与光通信系统相关的其它问题的改进的许多特定光纤设计。
    • 8. 发明申请
    • HIGHER-ORDER-MODE DISPERSION COMPENSATING PHOTONIC CRYSTAL FIBRES
    • 高阶模式分散补偿光子晶体纤维
    • WO2002088801A2
    • 2002-11-07
    • PCT/DK2002/000164
    • 2002-03-12
    • CRYSTAL FIBRE A/SBROENG, JesBJARKLEV, AndersLIBORI, Stig, Eigil, Barkou
    • BROENG, JesBJARKLEV, AndersLIBORI, Stig, Eigil, Barkou
    • G02B6/16
    • G02B6/02328C03B37/01217C03B37/0122C03B2203/30C03B2203/36C03B2203/42G02B6/02119G02B6/02261G02B6/02338G02B6/02347G02B6/02357G02B6/02361G02B6/02366G02B6/02371G02B6/02385G02B6/03611G02B6/03627G02B6/14G02B6/29377Y02P40/57
    • The present invention relates to a novel group of cladding and core designs, especially for use in optical fibres, which provides enhanced dispersion properties through waveguiding of higher-order modes. In a first aspect, the present invention relates to an optical fibre with a waveguide structure for supporting the transmission of light at a predetermined or operating wavelength λ 0 , said optical fibre having a longitudinal direction and a cross-section perpendicular to said longitudinal direction, said optical fibre comprising: a central region (41) having a centre axis in said longitudinal direction, said central region extending along and including said centre axis, said central region having an outer periphery with a maximum distance to the centre axis r centre,max , a minimum refractive index n centre,min , an effective refractive index n centre,eff and/or a resultant geometrical index n g,centre , a core region (43) extending along said longitudinal direction and surrounding said central region (41), said core region having an inner periphery that coincides with the outer periphery of the central region, an outer periphery with a maximum distance to the centre axis r core,max , a maximum refractive index n core,max , an effective refractive index n core,eff and/or a resultant geometrical index n g,core , a cladding region (45, 46) extending along said longitudinal direction, said cladding region surrounding and neighbouring said core region (43), said cladding region having an inner periphery that coincides with the outer periphery of the core region, an outer periphery with a maximum distance to a centre axis r cladding,max , a maximum refractive index n clad,max , an effective refractive index n clad,eff and/or a resultant geometrical index n g,clad . Here, it is preferred that n centre,eff is equal to or lower than n clad,eff and n clad,eff is lower than n core,eff at the wavelength λ 0 , and/or it is preferred that n g,centre is equal to or lower than n g,clad and n g,clad is lower than n g,core at the wavelength λ 0 . In preferred embodiments, the core region and/or the cladding region comprise (micro-)structural features. The invention further relates to a dispersion compensating module comprising and a preform for producing said optical fibres. The invention may e.g. find applications in high capacity, high transmission rate optical communications systems, e.g. WDM-systems.
    • 本发明涉及一种新型的包层和芯设计,特别是用于光纤中,其通过高阶模的波导提供增强的色散特性。 在第一方面,本发明涉及一种具有波导结构的光纤,用于支撑预定或工作波长λ0的光的透射,所述光纤具有纵向方向和垂直于所述纵向方向的横截面,所述光纤 光纤包括:中心区域(41),其具有在所述纵向方向上的中心轴线,所述中心区域沿着并包括所述中心轴线延伸,所述中心区域具有与所述中心轴线中心线最大距离的外周边, 最小折射率ncentre,min,有效折射率ncentre,eff和/或所得几何指数ng,中心,沿着所述纵向方向延伸并围绕所述中心区域的芯区域(43),所述芯区域具有 内圆周与中心区域的外周重合,外围与中心轴线最大距离为rcore,max,最大值 m,折射率ncore,最大值,有效折射率ncore,eff和/或所得几何指数ng,芯,沿着所述纵向方向延伸的包层区域(45,46),所述包层区域围绕并邻近所述芯区域 ),所述包层区域具有与芯区域的外周重合的内周边,具有与中心轴线最大距离的外围r包层,max,最大折射率nclad,max,有效折射率nclad,eff 和/或合成的几何指数ng,包层。 这里,优选ncentre,eff等于或低于nclad,eff和nclad,eff低于ncore,eff在波长λ0,和/或优选ng,中心等于或低于ng ,包层和ng,包层低于ng,核心在波长λ0。 在优选实施例中,芯区域和/或包层区域包括(微)结构特征。 本发明还涉及一种色散补偿模块,其包括用于产生所述光纤的预成型件。 本发明可以例如 在高容量,高传输速率的光通信系统中的应用,例如, WDM系统。