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    • 82. 发明申请
    • LARGE EFFECTIVE AREA FIBER WITH GRADED INDEX GE-FREE CORE
    • 大型有效区域纤维与等级索引通用核心
    • WO2012003120A1
    • 2012-01-05
    • PCT/US2011/041353
    • 2011-06-22
    • CORNING INCORPORATEDBICKHAM, Scott R.KHRAPKO, Rostislav RadievichMISHRA, Snigdharaj K.
    • BICKHAM, Scott R.KHRAPKO, Rostislav RadievichMISHRA, Snigdharaj K.
    • G02B6/02G02B6/028
    • G02B6/0365G02B6/02019G02B6/02266G02B6/02395G02B6/0286
    • According to some embodiments an optical waveguide fiber comprises (i) a Ge free core having an effective area of 100 µm 2 to 150 µm 2 , at 1550 nm wavelength, said core comprising: a) a central core region extending radially outwardly from a centerline to a radius r 1 , and having a relative refractive index percent profile Δ 1 (r) in % measured relative to pure silica, wherein -0.1 % ≤ Δ 1 (r) ≤0.12 %, wherein the central core region has a maximum relative refractive index percent, Δ 1MAX ; (b) a first annular core region surrounding and directly adjacent to the central core region, having an α value 1.5 ≤ α ≤ 10, and extending to an outer radius r 2 , wherein 6 µm ≤r 2 ≤ 10 µm, and having a relative refractive index percent profile, Δ 2 (r) in % measured relative to pure silica, a minimum relative refractive index Δ 2MIN , a maximum relative refractive index Δ 2MAX and the relative refractive index measured at a radius r = 2 µm, wherein 0.45 ≤ Δ 2 ≤0; -0.25≥Δ 2MIN ≥-0.45 and Δ 1MAX ≥Δ 2 (r =2 µm); (c) a fluorine doped second annular region surrounding and directly adjacent to the first annular core region and extending to a radius 20 µm ≤r 3 ≤ 30 µm and having a negative relative refractive index percent profile, Δ 3 (r) in %, measured relative to pure silica, with a minimum relative refractive index percent Δ 3MIN and -0.5 % 3MIN 3MIN ≤ Δ 2MIN ; (ii) a cladding surrounding the core and having a relative refractive index percent Δ 4 (r) in % measured relative to pure silica and a minimum refractive index delta Δ 4MIN , and -0.4 %
    • 根据一些实施例,光波导光纤包括(i)在1550nm波长处具有100μm2至150μm2的有效面积的无锗芯,所述芯包括:a)从中心线径向向外延伸到中心线的中心芯区域 半径r1,并且具有相对于纯二氧化硅测量的相对折射率百分比曲线?1(r),其中-0.1%=ξ1(r)= 0.12%,其中中心芯区域具有最大相对折射率百分比 ,1MAX; (b)围绕并直接邻近中心纤芯区域的第一环形芯区域,具有1.5 = a = 10的值,并延伸到外半径r2,其中6μm= r2 =10μm,并具有相对折射率 指标百分比曲线,相对于纯二氧化硅测量的α2(r)%,最小相对折射率Φ2MIN,最大相对折射率λ2MAX和在半径r =2μm处测量的相对折射率,其中0.45 = 2 = 0; -0.25 =≤2MIN= -0.45,Δ1MAX=λ2(r =2μm); (c)包围并直接邻近第一环形芯区域的氟掺杂的第二环形区域,并且延伸到半径为20μm= r3 =30μm并具有负的相对折射率百分比曲线,Δ3(r)in% 相对于纯二氧化硅,具有最小相对折射率%3MIN和-0.5%3MIN 3MIN =≥2MIN; (ii)围绕芯部的包层,并且具有相对于纯二氧化硅测得的相对折射率百分比Δ4(r)%,最小折射率δ4MIN,-0.4%<4 <-0.2%; 其中选择光纤的相对折射率分布以在1550nm波长处提供不超过0.17dB / km的衰减。
    • 84. 发明申请
    • DUAL COATED OPTICAL FIBERS AND METHODS FOR FORMING THE SAME
    • 双涂层光纤及其形成方法
    • WO2011106231A1
    • 2011-09-01
    • PCT/US2011/025216
    • 2011-02-17
    • CORNING INCORPORATEDBENNETT, Kevin W.KOH, Joohyun
    • BENNETT, Kevin W.KOH, Joohyun
    • C03C25/10G02B6/44
    • G02B6/02C03C25/1065C03C25/32G02B6/02395
    • Dual coated optical fibers and methods for forming dual coated optical fibers are disclosed herein. The dual coated optical fibers include a glass fiber comprising a core region, a cladding region and a dual coating layer surrounding the glass fiber. The dual coating layer includes an inner coating and an outer coating. The inner coating surrounds the glass fiber and includes a first polyimide material. In one embodiment the first polyimide material also includes an adhesion promoter. The outer coating surrounds and is in direct contact with the inner coating and includes a second polyimide material having a decomposition threshold temperature greater than the first polyimide material. The second polyimide material may also have a modulus of elasticity greater than the first polyimide material and a moisture uptake lower than the first polyimide material.
    • 本文公开了双重涂覆的光纤和用于形成双重涂覆的光纤的方法。 双重涂覆光纤包括玻璃纤维,其包括芯区域,包层区域和围绕玻璃纤维的双重涂层。 双涂层包括内涂层和外涂层。 内涂层包围玻璃纤维并且包括第一聚酰亚胺材料。 在一个实施方案中,第一聚酰亚胺材料还包括粘合促进剂。 外涂层包围并与内涂层直接接触,并且包括具有大于第一聚酰亚胺材料的分解阈值温度的第二聚酰亚胺材料。 第二聚酰亚胺材料也可以具有比第一聚酰亚胺材料大的弹性模量和低于第一聚酰亚胺材料的吸湿性。
    • 85. 发明申请
    • REDUCED-DIAMETER OPTICAL FIBER
    • 减径直径的光纤
    • WO2010053356A3
    • 2011-06-23
    • PCT/NL2009000214
    • 2009-11-06
    • DRAKA COMTEQ BVOVERTON BOB J
    • OVERTON BOB J
    • G02B1/04C03C25/10G02B6/02
    • G02B6/02395C03C25/106
    • The present invention relates to a reduced-diameter optical fiber that employs a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low- temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optional dual coating is specifically balanced for superior heat stripping in fiber ribbons, with virtually no residue left behind on the glass. This facilitates fast splicing and terminations. The improved coating system provides optical fibers that offer significant advantages for deployment in most, if not all, f?ber-to-the-premises (FTTx) systems.
    • 本发明涉及采用新型涂布系统的直径缩小的光纤。 当与弯曲不敏感的玻璃纤维结合时,根据本发明的新型涂层系统产生具有极低损耗的光纤。 涂层系统的特征是(i)具有优异的低温特性的较软的初级涂层,以防止任何环境和最强的物理情况下的微弯曲,以及(ii)具有增强的颜色强度和鲜艳度的着色的二次涂层。 二次涂层为结构提供了改进的带状特征,该结构坚固且容易地进入(即分离和剥离)。 可选的双涂层是特别平衡的,用于在纤维带中实现优异的热剥离,玻璃上几乎没有留下残留物。 这有助于快速接合和终止。 改进的涂层系统提供光纤,其在大多数(如果不是全部)的基站(FTTx)系统中的部署提供显着的优点。