Optical fiber
    2.
    发明授权
    Optical fiber 失效
    光纤

    公开(公告)号:US4392715A

    公开(公告)日:1983-07-12

    申请号:US122088

    申请日:1980-02-19

    摘要: In an optical fiber having a core whose material consists essentially of vitreous silica, said core having a jacket of plastic which is optically effective at least on a length of 10 m reckoned from the light input end of the fiber and which has a refractive index n.sub.M which is smaller than that of the core, the improvement wherein the core has an outer layer whose refractive index n.sub.ext is smaller than the refractive index n.sub.K of the remaining inner core portion which is constant and greater than the refractive index n.sub.M of the jacket, and n.sub.ext lies in the range from n.sub.K -(n.sub.K -n.sub.M). (0.25 to 0.8) and whose thickness amounts to between 0.8 .mu.m and 8 .mu.m.

    摘要翻译: 在具有其材料基本上由玻璃状二氧化硅组成的芯的光纤中,所述芯具有塑料外壳,其至少在纤维的光输入端计量至少10m的长度上具有光学有效性,并且具有折射率nM 其小于芯的改善,其中芯具有其折射率接下来小于剩余内芯部分的折射率nK的外层,该外层的外层是恒定的并且大于外壳的折射率nM,以及 接下来在nK-(nK-nM)的范围内。 (0.25〜0.8),其厚度为0.8〜8μm。

    Method of producing synthetic quartz glass, apparatus for the practice
of the method, and use of the synthetic quartz glass
    3.
    发明授权
    Method of producing synthetic quartz glass, apparatus for the practice of the method, and use of the synthetic quartz glass 失效
    制造合成石英玻璃的方法,实施该方法的装置以及合成石英玻璃的使用

    公开(公告)号:US4162908A

    公开(公告)日:1979-07-31

    申请号:US874965

    申请日:1978-02-03

    摘要: An improvement in a method for producing a synthetic hydroxyl ion-free quartz glass wherein a hydrogen free silicon compound is heated in a hydrogen-free gas stream while the gas stream is passed through an induction coupled plasma burner, the gas stream containing elemental and/or bound oxygen and the oxidation product is deposited on a refractory support as a vitreous mass, the improvement lying in including in the gas stream a gaseous hydrogen-free, thermally decomposable compound which yields fluorine in an amount of at least 500 gms. per kilogram of silica to be produced; an apparatus for producing a synthetic OH ion-free quartz glass comprising an induction coupled plasma burner which burner has disposed thereabout 3 concentric quartz glass tubes disposed in stepped configuration of which the outermost tube is the longest and the innermost tube is the shortest. The apparatus includes means for passing through the innermost tube a hydrogen-free gas stream containing elemental oxygen and/or bound oxygen together with a gaseous hydrogen free thermally decomposable compound which yields fluorine. The apparatus further contains means for passing a separating gas such as oxygen through the space defined by the innermost tube and the middle tube and the middle tube and the outermost tube.

    摘要翻译: 一种制备合成的无羟基离子的石英玻璃的方法的改进,其中在气流通过感应耦合等离子体燃烧器的同时,在无氢气体气流中加热无氢硅化合物,所述气流含有元素和/ 或结合氧,并且氧化产物作为玻璃体堆积在耐火载体上,其改进在于在气流中包含无气态的可热分解化合物,其产生至少500gms的量的氟。 每千克生产的二氧化硅; 一种用于生产合成的无OH离子的石英玻璃的装置,包括感应耦合等离子体燃烧器,该燃烧器设置在三个同心的石英玻璃管上,该同心石英玻璃管以阶梯状构造,其中最外面的管是最长的并且最内的管是最短的。 该装置包括用于通过最内管将含有元素氧和/或结合氧的无氢气体气流与产生氟的无氢气的可热分解化合物通过的装置。 该装置还包括用于使诸如氧的分离气体通过由最内管和中管以及中管和最外管限定的空间的装置。

    Light conducting fiber
    4.
    发明授权
    Light conducting fiber 失效
    导光纤维

    公开(公告)号:US4165915A

    公开(公告)日:1979-08-28

    申请号:US713479

    申请日:1976-08-11

    摘要: A semiproduct for use in the manufacture of light conducting fibers comprising a core of synthetic quartz glass having a thickness of 6 to 400 mm, the quartz glass containing less than 10 ppm hydroxyl ions and having, in the near infrared spectral range, an optical loss totaling less than 4 dB/km, measured in the mass, the core being fused with a jacket having a wall thickness of 2 to 20 mm and consisting essentially of synthetic quartz glass containing more than 4,000 ppm of fluorine, the jacket having a length of at least 200 mm; a method of producing the same and light conducting fibers derived therefrom.

    摘要翻译: 一种用于制造导光纤维的半成品,其包括厚度为6至400mm的合成石英玻璃芯,所述石英玻璃含有小于10ppm的羟基离子,并且在近红外光谱范围内具有光损耗 总共小于4dB / km,以质量测量,芯部与壁厚为2至20mm的护套熔合并且基本上由含有大于4,000ppm氟的合成石英玻璃组成,该护套的长度为 至少200毫米; 其制造方法和由其衍生的导光纤维。

    Method of preparing a foreproduct for the production of an optical
lightconductor
    5.
    发明授权
    Method of preparing a foreproduct for the production of an optical lightconductor 失效
    制备用于生产光导体的前产品的方法

    公开(公告)号:US4045198A

    公开(公告)日:1977-08-30

    申请号:US717075

    申请日:1976-08-24

    摘要: There is disclosed a process for preparing a foreproduct useful in the production of an optical self-focusing lightconductor in which the index of refraction of the lightconductor diminishes with increasing distance from the conductor axis such that, when plotted against the conductor diameter, the refractive index curve is parabolic and the apex of the parabola lies over the center of the conductor diameter wherein a plurality of layers of doped silica are deposited on a cylindrical support, the layers being formed of a mixture of a vaporous silicon compound and a vaporous doping agent at elevated temperature. The invention involves depositing at least one layer of undoped silica between layers of doped silica and following each deposition of each doped or undoped silica layer by heating step in which the material is heated to a temperature of at least 900.degree. C to vitrify the same. Each layer is deposited in a thickness ranging from 0.1 to 20 .mu.m.

    摘要翻译: 公开了一种制备可用于生产光学自聚焦光导体的前体产物的方法,其中光导体的折射率随着与导体轴线的距离的增加而减小,使得当相对于导体直径作图时,折射率 曲线是抛物线的,并且抛物线的顶点位于导体直径的中心之上,其中多个掺杂的二氧化硅层沉积在圆柱形支撑件上,这些层由气态硅化合物和气相掺杂剂的混合物形成, 升温 本发明涉及在掺杂二氧化硅的层之间沉积至少一层未掺杂的二氧化硅,并且随后通过加热步骤对每个掺杂或未掺杂的二氧化硅层进行每次沉积,其中将材料加热至至少900℃的温度以使其玻璃化。 每层沉积厚度为0.1至20微米。

    Method of producing synthetic quartz glass
    6.
    再颁专利
    Method of producing synthetic quartz glass 失效
    生产合成石英玻璃的方法

    公开(公告)号:USRE30883E

    公开(公告)日:1982-03-16

    申请号:US121078

    申请日:1980-02-13

    摘要: An improvement in a method for producing a synthetic hydroxyl ion-free quartz glass wherein a hydrogen free silicon compound is heated in a hydrogen-free gas stream while the gas stream is passed through an induction coupled plasma burner, the gas stream containing elemental and/or bound oxygen and the oxidation product is deposited on a refractory support as a vitreous mass, the improvement lying in including in the gas stream a gaseous hydrogen-free, thermally decomposable compound which yields fluorine in an amount of at least 500 gms. per kilogram of silica to be produced; an apparatus for producing a synthetic OH ion-free quartz glass comprising an induction coupled plasma burner which burner has disposed thereabout 3 concentric quartz glass tubes disposed in stepped configuration of which the outermost tube is the longest and the innermost tube is the shortest. The apparatus includes means for passing through the innermost tube a hydrogen-free gas stream containing elemental oxygen and/or bound oxygen together with a gaseous hydrogen free thermally decomposable compound which yields fluorine. The apparatus further contains means for passing a separating gas such as oxygen through the space defined by the innermost tube and the middle tube and the middle tube and the outermost tube.