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    • 2. 发明申请
    • Photonic crystal fibres comprising stress elements
    • 包含应力元素的光子晶体纤维
    • US20060291789A1
    • 2006-12-28
    • US11454798
    • 2006-06-19
    • Jacob FolkenbergMartin NielsenNiels Mortensen
    • Jacob FolkenbergMartin NielsenNiels Mortensen
    • G02B6/02G02B6/024
    • G02B6/02347C03B37/01217C03B37/0122C03B2203/14C03B2203/31C03B2203/42G02B6/02314G02B6/02352G02B6/02357G02B6/02361G02B6/02366G02B6/024G02B6/105
    • A photonic crystal fibre includes a core region for propagating light in a longitudinal direction of the fibre, a cladding region surrounding the core region, the cladding region including micro-structural elements extending in the longitudinal direction. The cladding region further includes at least one stress element having a coefficient of thermal expansion αT,SAP and extending in the longitudinal direction of the photonic crystal fibre, the stress element(s) being located in a cladding background material having a coefficient of thermal expansion αT,cladback different from αT,SAP. The location of the at least one stress element relative to the core region and the micro-structural elements and the coefficients of thermal expansion αT,SAP and αT,cladback are adapted to provide a stress induced birefringence in the core region of the photonic crystal fibre. An article includes a photonic crystal fibre, a method of manufacturing and the use of a photonic crystal fibre are furthermore provided.
    • 光子晶体光纤包括用于在光纤的纵向方向上传播光的芯区域,围绕芯区域的包层区域,包围区域包括在纵向方向上延伸的微结构元件。 包层区域还包括至少一个应力元件,其具有热膨胀系数αT,并且在光子晶体光纤的纵向方向上延伸,应力元件位于包层中 具有与αT不同的热膨胀系数αT的复合材料的背景材料。 至少一个应力元件相对于芯区域和微结构元件以及热膨胀系数αT,SAP和αT,复合材料的位置是 适于在光子晶体光纤的芯区域中提供应力诱导的双折射。 还提供了一种包括光子晶体光纤,制造方法和使用光子晶体光纤的物品。
    • 4. 发明申请
    • Dual core photonic crystal fibers(pcf) with special dispersion properties
    • 双核光子晶体光纤(pcf)具有特殊的色散特性
    • US20050069269A1
    • 2005-03-31
    • US10474030
    • 2002-04-11
    • Stig LiboriJes BroengAnders BjarklevNiels MortensenJacob Folkenberg
    • Stig LiboriJes BroengAnders BjarklevNiels MortensenJacob Folkenberg
    • G02B6/032G02B6/02G02B6/036G02B6/20
    • 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 Nco,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 Ncl,1 and each said first cladding feature or element having a refractive index being lower than Ncl,1, whereby a resultant geometrical index Nge,cl, 1? of the first cladding region is lowered compared to Ncl,1; (3) a second core region surrounding said first cladding region, said second core region comprising a second core material having a refractive index Nco,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 Ncl,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 Nco,1>Nge,cl,1, Nco,2>Nge,cl,1, and Nco,2>Ncl,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,1,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,由此得到几何指数N ge,cl,1? 与Ncl,1相比,第一包层区域下降; (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,1和Nco,2> Ncl,2。