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    PROCESS FOR FABRICATION OF YTTERBIUM DOPED OPTICAL FIBER
    4.
    发明申请
    PROCESS FOR FABRICATION OF YTTERBIUM DOPED OPTICAL FIBER 审中-公开
    YTTERBIUM DOPED光纤制造工艺

    公开(公告)号：US20160083284A1

    公开(公告)日：2016-03-24

    申请号：US14888930

    申请日：2014-03-26

    申请人： COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH ,  DEPARTMENT OF ELECTRONICS AND INFORMATION TECHNOLOGY

    发明人： Ranjan Sen ,  Maitreyee Saha

    IPC分类号： C03B37/018 ,  C03B37/025

    CPC分类号： C03B37/01853 ,  C03B37/018 ,  C03B37/01807 ,  C03B37/01815 ,  C03B37/025 ,  C03B2201/36 ,  C03B2203/22 ,  C03B2207/50 ,  C03B2207/66 ,  C03B2207/81 ,  C03B2207/90

    摘要： The present invention provides a process for fabrication of ytterbium (Yb) doped optical fiber through vapor phase doping technique. The method comprises deposition of Al2O3 and Yb2O3 in vapor phase simultaneously in combination with silica during formation of sintered core layer. This is followed by collapsing at a high temperature in stepwise manner to produce the preform and drawing of fibers of appropriate dimension. The process parameters have been optimized in such a way that Al and Yb-chelate compounds can be transported to the reaction zone without decomposition and condensation of precursor materials. Thus variations of dopants concentration along the length of the preform have been minimized to

    摘要翻译： 本发明提供了一种通过气相掺杂技术制造掺杂镱（Yb）的光纤的方法。 该方法包括在形成烧结芯层的过程中同时与二氧化硅一起沉积气相中的Al2O3和Yb2O3。 随后在高温下以逐步的方式塌缩，以产生预制件并拉出适当尺寸的纤维。 已经优化了工艺参数，使得Al和Yb螯合化合物可以转运到反应区而不会分解和冷凝前体材料。 因此，沿着预制件的长度的掺杂剂浓度的变化已经被最小化到<1％，并且还实现了该方法的良好的重复性。 所得到的纤维也具有光滑的芯包覆边界，没有任何星形缺陷。 该方法可以可靠地用于制造大型Yb掺杂光纤。 纤维还显示出低损耗，可忽略的中心浸渍和良好的光学性能，适用于光纤激光器。

    Porous glass base material manufacturing burner and optical fiber porous glass base material manufacturing apparatus
    5.
    发明授权
    Porous glass base material manufacturing burner and optical fiber porous glass base material manufacturing apparatus 有权
    多孔玻璃基材制造燃烧器和光纤多孔玻璃基材制造装置

    公开(公告)号：US09227869B2

    公开(公告)日：2016-01-05

    申请号：US14178299

    申请日：2014-02-12

    申请人： Shin-Etsu Chemical Co., Ltd.

    发明人： Makoto Yoshida

    IPC分类号： C03B37/014 ,  C03B19/14

    CPC分类号： C03B37/0142 ,  C03B19/1423 ,  C03B2207/06 ,  C03B2207/12 ,  C03B2207/42 ,  C03B2207/50 ,  C03B2207/52 ,  Y02P40/57

    摘要： A porous glass base material manufacturing burner comprising a combustible gas emission nozzle having one or more rows of small-diameter combustion assisting gas emission nozzles arranged around a central glass raw material gas emission nozzle. When a cross section of the burner formed by cleaving in a direction perpendicular to a central axis of the burner is divided into four equal regions by two orthogonal straight lines intersecting at a center of the cross section, total flow path surface area of the small-diameter combustion assisting gas emission nozzles included in two of the four regions through which passes a straight line running along the starting member and through the center of the cross section is less than the total flow path surface area of the small-diameter combustion assisting gas emission nozzles included in the other two of the four regions.

    摘要翻译： 一种多孔玻璃基材制造用燃烧器，其具有在中央玻璃原料气体排出喷嘴周围配置有一排以上的小直径燃烧辅助气体排出喷嘴的可燃气体排出喷嘴。 当通过在与燃烧器的中心轴线垂直的方向上分裂而形成的燃烧器的横截面通过与横截面中心相交的两条垂直的直线分成四个相等的区域时， 包括在通过沿着起始构件延伸的直线并通过横截面中心的四个区域中的两个中的直径燃烧辅助气体排放喷嘴小于小直径助燃气体排放的总流路面积 四个地区其他两个地区都有喷嘴。

    Method for fabricating porous silica preform
    6.
    发明授权
    Method for fabricating porous silica preform 有权
    多孔二氧化硅预制件的制造方法

    公开(公告)号：US08375749B2

    公开(公告)日：2013-02-19

    申请号：US12630440

    申请日：2009-12-03

    申请人： Kentaro Ichii ,  Takakazu Gotoh ,  Naritoshi Yamada ,  Koichi Harada

    发明人： Kentaro Ichii ,  Takakazu Gotoh ,  Naritoshi Yamada ,  Koichi Harada

    IPC分类号： C03B37/018

    CPC分类号： C03B37/0142 ,  C03B37/01413 ,  C03B2201/12 ,  C03B2203/22 ,  C03B2207/22 ,  C03B2207/36 ,  C03B2207/50 ,  Y02P40/57

    摘要： A method for fabricating a porous silica preform includes the steps of supplying fuel gas for generating an oxyhydrogen flame to a glass synthesizing burner; supplying Gas A containing silicon and Gas B containing fluorine to the burner; synthesizing glass particles; and depositing the glass particles around a starting rod, in which when glass particles are deposited directly on the starting rod, a supply of Gas A and a supply of Gas B supplied to the burner are adjusted so that a ratio of the number of fluorine atoms to the number of silicon atoms in the gas supplied to the burner satisfies the following Formula (1): {(number of F atoms)/(number of Si atoms)}≦0.1  (1).

    摘要翻译： 制造多孔二氧化硅预制件的方法包括以下步骤：向玻璃合成燃烧器提供产生氢氧焰的燃料气体; 将含有硅的气体A和含氟的气体B供应到燃烧器; 合成玻璃颗粒; 并且将玻璃颗粒沉积在起始棒周围，其中当玻璃颗粒直接沉积在起始棒上时，调节供应气体A和供应到燃烧器的气体B的供应，使得氟原子数 与供给到燃烧器的气体中的硅原子数相符合以下式（1）：{（F原子数）/（Si原子数）}＆nlE; 0.1（1）。

    Manufacture of high purity glass tubes
    9.
    发明授权
    Manufacture of high purity glass tubes 有权
    制造高纯度玻璃管

    公开(公告)号：US07021083B2

    公开(公告)日：2006-04-04

    申请号：US10353354

    申请日：2003-01-29

    申请人： Thomas E. McDonald ,  Fengqing Wu

    发明人： Thomas E. McDonald ,  Fengqing Wu

    IPC分类号： C03B37/018

    CPC分类号： C03B37/01413 ,  C03B19/1415 ,  C03B37/01205 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2207/50 ,  C03B2207/70

    摘要： A glass tube for use in an optical fiber preform is produced by applying a first soot on an end face of a starting member to form an elongated, porous cylindrical soot core having a first density, and applying a second soot including SiO2 on the periphery of the soot core to form a porous soot cladding having a second density greater than that of the soot core at the periphery of the core. The core and the cladding are later heated together at a temperature sufficient for sintering to form a core glass and a cladding glass. Because the soot core collapses at a greater rate than the soot cladding during sintering, the core glass separates or delaminates radially from the cladding glass. The core glass is then removed from the surrounding cladding glass, and the latter is treated to provide a high purity glass tube suitable for use as part of an optical fiber preform.

    摘要翻译： 通过在起始构件的端面上施加第一烟炱以形成具有第一密度的细长多孔圆筒形烟炱芯，并且施加包括SiO 2的第二烟炱，制造用于光纤预制棒的玻璃管 在烟灰芯的周边上形成多孔烟灰包层，其具有大于核心周边处的烟灰芯的第二密度的第二密度。 芯和包层随后在足以烧结的温度下一起加热以形成芯玻璃和包层玻璃。 因为烟炱芯在烧结期间以比烟灰覆层更大的速率塌缩，所以芯玻璃与包层玻璃的径向分离或分层。 然后将核心玻璃从周围的包层玻璃中除去，并且将后者处理以提供适合用作光纤预制件的一部分的高纯度玻璃管。