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    Method of making an optical fiber preform
    83.
    发明公开
    Method of making an optical fiber preform 失效
    法尔森（Verfahren zum Herstellen einer Vorformfüroptische Fasern）。

    公开(公告)号：EP0367871A1

    公开(公告)日：1990-05-16

    申请号：EP88310450.7

    申请日：1988-11-07

    Applicant: Corning Glass Works

    Inventor： Gilliland, John William

    IPC: C03B37/014

    CPC classification number: C03B37/01466 ,  C03B37/01446 ,  C03B37/01473 ,  C03B2201/08 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/42 ,  C03B2203/22

    Abstract: A method is disclosed for making a step-index optical fiber having a steep refractive index gradient between core and cladding. Core glass particles comprising a base glass and a refractive index-­increasing dopant are deposited on a mandrel (20). The mandrel is removed and the resultant soot preform is consolidated to form a core preform (40) having a dopant-poor surface region. The core glass preform is stretched and the hole therein is closed to form a core bait rod. Cladding glass soot is deposited on the core bait rod at a density which is at least 0.5 g/cc. This is accomplished by directing the flame from an auxiliary burner (66) onto the core bait rod immediately prior to the deposition of cladding soot thereon. The resultant preform is consolidated and drawn into an optical fiber. In another embodiment, the etched core preform is overclad with a layer of cladding glass, and the composite preform is stretched prior to applying a second overclad layer.

    Abstract translation: 公开了一种制造在芯和包层之间具有陡峭折射率梯度的阶跃折射率光纤的方法。 包含基础玻璃和折射率增加掺杂剂的核心玻璃颗粒沉积在心轴（20）上。 去除心轴并将所得到的烟灰预制件固结，以形成具有掺杂剂不良表面区域的芯预制件（40）。 将芯玻璃预成型件拉伸并且其中的孔闭合以形成核心诱饵棒。 包层玻璃烟灰以至少0.5g / cc的密度沉积在核心诱饵棒上。 这是通过将火焰从辅助燃烧器（66）引导到核心诱饵棒上而实现的，在其上沉积包层烟灰之前。 将所得预制件固结并拉制成光纤。 在另一个实施例中，蚀刻的芯预制件用一层包层玻璃包覆，并且复合预制件在施加第二外包层之前被拉伸。

    METHOD OF MAKING UPDOPED CLADDING BY USING SILICON TERTRACHLORIDE AS THE DOPANT
    90.
    发明申请
    METHOD OF MAKING UPDOPED CLADDING BY USING SILICON TERTRACHLORIDE AS THE DOPANT 审中-公开
    通过使用硅酮作为鞣剂制备更好的覆盖物的方法

    公开(公告)号：US20160152510A1

    公开(公告)日：2016-06-02

    申请号：US14997780

    申请日：2016-02-15

    Applicant: Corning Incorporated

    Inventor： Brian Lee Harper ,  Rostislav Radiyevich Khrapko ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

    IPC: C03B37/014

    CPC classification number: C03B37/01446 ,  C03B37/014 ,  C03B37/01453 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/20

    Abstract: One embodiment of the disclosure relates to a method of making an optical fiber comprising the steps of: (i) exposing a silica based preform with at least one porous glass region having soot density of ρ to a gas mixture comprising SiCl4 having SiCl4 mole fraction ySiCl4 at a doping temperature Tdop such that parameter X is larger than 0.03 to form the chlorine treated preform, wherein X = 1 1 + [ ( ρ ρ s - ρ )  0.209748   T dop  Exp  [ - 5435.33 / T dop ] y SiCl   4 3 / 4 ] and ρs is the density of the fully densified soot layer; and (ii) exposing the chlorine treated preform to temperatures above 1400° C. to completely sinter the preform to produce sintered optical fiber preform with a chlorine doped region; and (iii) drawing an optical fiber from the sintered optical preform.

    Abstract translation: 本公开的一个实施方案涉及一种制造光纤的方法，包括以下步骤：（i）将二氧化硅基预型体暴露于具有烟炱密度的至少一个多孔玻璃区域; 在掺杂温度Tdop下将SiCl 4的SiCl 4摩尔分数为ySiCl4的气体混合物混合，使得参数X大于0.03以形成经氯处理的预制件，其中X = 11 + [（＆rgr; s - ＆rgr;））0.209748 实验表明，完全致密的煤烟层的密度为 和（ii）将氯处理的预制件暴露于高于1400℃的温度下，以完全烧结预成型件，以制备具有氯掺杂区域的烧结光纤预制件; 和（iii）从烧结的光学预型件拉制光纤。

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