Low bend loss optical fiber
    9.
    发明授权
    Low bend loss optical fiber 有权
    低弯曲损耗光纤

    公开(公告)号:US08953917B2

    公开(公告)日:2015-02-10

    申请号:US13680641

    申请日:2012-11-19

    IPC分类号: G02B6/036 G02B6/028

    摘要: According to some embodiments a single mode fiber includes: a germania doped central core region having outer radius r1 and relative refractive index Δ1; and a cladding region comprising (i) a first inner cladding region having an outer radius r2>6 microns and relative refractive index Δ2 and 0.3≦r1/r2≦0.85; and (ii) a second inner cladding region having an outer radius r3>9 microns and comprising a minimum relative refractive index Δ3, wherein said second inner cladding region has at least one region with a relative refractive index delta that becomes more negative with increasing radius; and (iii) an outer cladding region surrounding the second inner cladding region and comprising relative refractive index Δ4, wherein Δ1>Δ2>Δ3, Δ3

    摘要翻译: 根据一些实施例,单模光纤包括:具有外半径r1和相对折射率&Dgr; 1的掺杂锗的中心芯区域; 包括区域,其包括(i)具有外半径r2> 6微米的第一内包层区域和相对折射率< Dgr; 2和0.3& nlE; r1 / r2≦̸ 0.85; 和(ii)外半径r3> 9微米并且包括最小相对折射率< Dgr; 3的第二内包层区域,其中所述第二内包层区域具有至少一个相对折射率Δδ的区域变得更为负, 半径增加 4,一种包围第二内包层区域的外包层区,包括相对折射率&Dgr; 4,其中&Dgr; 1&Dgr; 2&Dgr; 3,&Dgr; 3&