公开(公告)号：US07174078B2

公开(公告)日：2007-02-06

申请号：US10474030

申请日：2002-04-11

Applicant: Stig Eigil Barkou Libori ,  Jes Broeng ,  Anders Bjarklev ,  Niels Asger Mortensen ,  Jacob Riis Folkenberg

Inventor： Stig Eigil Barkou Libori ,  Jes Broeng ,  Anders Bjarklev ,  Niels Asger Mortensen ,  Jacob Riis Folkenberg

IPC: G02B6/02 ,  G02B6/32 ,  G02B6/28 ,  G02B6/36 ,  G02B6/00

CPC classification number: 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

Abstract: An optical fiber for transmitting light, said optical fiber having an axial direction and a cross section perpendicular to said axial direction, said optical fiber 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 fiber 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.

Abstract translation: 一种用于透射光的光纤，所述光纤具有轴向和与所述轴向方向垂直的横截面，所述光纤包括：（1）第一芯区域，包括具有折射率N N co的第一芯材料 ，1 < （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N cl，1 N，并且每个所述第一包层特征或元件的折射率低于N cl，1 N，由此得到的几何形状 索引N ge，cl，1？ 的第一包层区域与N cl，1 N相比降低; （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N co，2 N的第二纤芯材料，和（4）围绕所述第二纤芯的第二包层区域 所述第二包层区域包括具有折射率N cl，2 N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的特征在于，所述第二芯材料和所述第二芯材料 选择和布置第二覆层材料，使得N 2 Co，C 1，N 2，N 2，N 2， >，c1，1，...，N＆gt;，2＆lt; / sub＆gt; cl，2＆gt;。