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    • 26. 发明申请
    • LOW BEND LOSS OPTICAL FIBER
    • 低弯曲损耗光纤
    • WO2017172714A1
    • 2017-10-05
    • PCT/US2017/024472
    • 2017-03-28
    • CORNING INCORPORATED
    • BOOKBINDER, Dana CraigLI, Ming-JunMISHRA, Snigdharaj KumarTANDON, Pushkar
    • G02B6/036G02B6/02
    • Disclosed herein are optical waveguide fibers comprising: (I) a core comprising an outer radius r 1 , a maximum refractive index delta percent Δ 1max and core alpha, α, of larger than 5; and (II) a cladding surrounding the core, the cladding comprising: (i) an inner cladding region having outer radius r 2 and refractive index delta percent Δ 2 , wherein Δ 1max > Δ 2 ; (ii) a trench region surrounding the inner cladding region, the trench region having an outer radius, r 3 where r 3 ≥ 10 microns and refractive index delta percent Δ 3 ; and (iii) an outer cladding region having chlorine concentration of ≥ 1.2 wt.% surrounding the trench region and comprising refractive index delta percent Δ 4 , wherein Δ 1max > Δ 4 and Δ 2 > Δ 3 , and Δ 4 > Δ 3 and wherein the difference between Δ 4 and Δ 3 is ≥ 0.12 percent.
    • 本文公开了光波导纤维,其包括:(I)包含外半径r 1,最大折射率Δ百分比Δ1 max的芯体, 和大于5的核心α,α; 和(II)围绕所述纤芯的包层,所述包层包括:(i)具有外半径r 2和折射率Δ百分比Δ2的内包层区域,其中Δ 1max &gt; Δ<子> 2 ; (ii)包围内包层区域的沟槽区域,沟槽区域具有外半径r 3 3,其中r 3≥10微米且折射率增量百分数Δ 3 ; 和(iii)包围所述沟槽区并具有折射率Δ百分比Δ4的氯浓度≥1.2重量%的外包层区域,其中Δ1 max≤1。 Δ4和Δ2> 0。 Δ3,Δ4和​​Δ4。 Δ3和Δ4和Δ3之间的差值≥0.12%。