Method and device for outside plasma deposition of hydroxyl ion-free
silica
    261.
    发明授权
    Method and device for outside plasma deposition of hydroxyl ion-free silica 失效
    用于羟基无离子二氧化硅的外部等离子体沉积的方法和装置

    公开(公告)号:US5194714A

    公开(公告)日:1993-03-16

    申请号:US533557

    申请日:1990-06-05

    Abstract: Method of outside plasma deposition onto a rod (17,22) of silica substantially free from hydroxyl ions, possibly doped to change its refractive index, by reaction with oxygen of a silicon compound and possibly of doping compounds, in the presence of a gas plasma raised to a very high temperature (16) by induction with the help of a high frequency generator (15). The rod on which the silica deposit is made is kept in a sealed chamber (19) separated from the surrounding atmosphere and supplied by a pipe (20) with atmospheric air that is successively passed through a filter (31), a compressor (32) a cooling means (33), a condensation water drain (35) and a final desiccation by adsorption (36, 38). A device for implementing the method is also claimed.

    Abstract translation: 在气体等离子体存在下,通过与硅化合物的氧反应和可能的掺杂化合物的反应,外部等离子体沉积到基本上不含羟基离子的二氧化硅的棒(17,22)上,其可能被掺杂以改变其折射率 借助于高频发生器(15),通过感应升高到非常高的温度(16)。 将制备二氧化硅沉积物的棒保持在与周围大气分离的密封室(19)中,并通过管道(20)供应连续通过过滤器(31),压缩机(32)的大气, 冷却装置(33),冷凝水排放口(35)和通过吸附的最终干燥(36,38)。 还要求用于实现该方法的装置。

    Method of enhancing fused quartz body purity
    263.
    发明授权
    Method of enhancing fused quartz body purity 失效
    加强熔体体积纯度的方法

    公开(公告)号:US5096479A

    公开(公告)日:1992-03-17

    申请号:US634865

    申请日:1991-01-03

    Abstract: The method of enhancing purity of a fused quartz body having opposed boundary surfaces, includes the steps of maintaining the body at a temperature above 1000.degree. C. and at the same time applying a polarizing potential across the boundary surfaces by electrodes in contact with the boundary surfaces so that at least some of the residual impurity ions in it are made to migrate away from one of the boundary surfaces towards the opposite one of the boundary surfaces thereof and are subsequently discharged at the opposite boundary surface. To avoid surface contamination or deformation each of the electrodes is a gaseous electrode of an at least partially ionized helium, argon, neon, krypton, xenon, nitrogen or hydrogen gas or a flame produced by combustion of hydrogen, methane, propane, butane or acetylene. The temperature during the maintaining step is advantageously from 1500.degree. C. to 2100.degree. C., the polarizing potential applied across the boundary surfaces advantageously exceeds 10 volts per mm body thickness and the duration of the maintaining at these temperatures is at least 10 seconds per mm thickness.

    Abstract translation: PCT No.PCT / GB89 / 00960 Sec。 371日期1991年1月3日 102(e)日期1991年1月3日PCT PCT 1989年8月17日PCT公布。 公开号WO90 / 02103 1990年3月8日。提高具有相对边界面的熔融石英体的纯度的方法包括以下步骤:将身体保持在1000℃以上的温度,同时在边界面上施加极化电位 通过与边界表面接触的电极,使得其中的至少一些剩余杂质离子从其中一个边界表面朝向其相邻的一个边界表面迁移,随后在相对的边界表面排出。 为了避免表面污染或变形,每个电极是至少部分电离的氦气,氩气,氖气,氪气,氙气,氮气或氢气的气态电极或由氢气,甲烷,丙烷,丁烷或乙炔燃烧产生的火焰 。 保持步骤期间的温度有利地为1500℃至2100℃,跨过边界面施加的极化电势有利地超过每毫米体积10伏特,并且在这些温度下保持的持续时间为至少10秒 mm厚度。

    Preparing vaccine against Herpes simplex virus
    264.
    发明授权
    Preparing vaccine against Herpes simplex virus 失效
    准备针对单纯疱疹病毒的疫苗

    公开(公告)号:US4816250A

    公开(公告)日:1989-03-28

    申请号:US478333

    申请日:1983-03-24

    Abstract: A vaccine against a DNA virus, for exmaple, Herpes simplex virus, is prepared by incubating a cell sample which has been infected with the virus, releasing the nuclei in the infected cell material from the cytoplasmic fraction of that material, chemically fixing the polypeptide chains in the cytoplasmic fraction, and forming a precipitate which includes the virus antigens in the cytoplasmic fraction, the precipitate providing the active constituent of the vaccine. A characteristic strain of the virus is preferred, and transfers its characteristics to the vaccine so that vaccinated subjects may subsequently be distinguished from infected subjects.

    Abstract translation: 通过孵育已经感染病毒的细胞样品,将感染的细胞材料中的细胞核从该材料的细胞质部分释放出来,化学地固定多肽链,制备针对DNA病毒的疫苗,例如单纯疱疹病毒 并在细胞质级分中形成包含病毒抗原的沉淀物,提供疫苗的活性成分。 病毒的特征菌株是优选的,并且将其特征转移到疫苗,使得接种疫苗的受试者随后可以与被感染的受试者区分开来。

    Quartz glass envelope tube
    266.
    发明授权
    Quartz glass envelope tube 失效
    石英玻璃管

    公开(公告)号:US4437727A

    公开(公告)日:1984-03-20

    申请号:US384467

    申请日:1982-06-03

    Applicant: Norbert Treber

    Inventor: Norbert Treber

    CPC classification number: C03B37/01426 C03B2201/02 Y10T428/1317

    Abstract: A quartz glass envelope tube for the preparation of a light guide fiber blank, the tube being in the form of a laminate in which the inner layer consists essentially of quartz glass made from rock crystal and the outer layer of synthetic quartz glass. Good mechanical properties, especially tensile strength, are thereby achieved.

    Abstract translation: 一种用于制备导光纤维坯料的石英玻璃封套管,该管为层压板的形式,其中内层基本上由石英玻璃制成的石英玻璃和合成石英玻璃的外层组成。 由此实现良好的机械性能,特别是拉伸强度。

    Method of fabricating a polarization retaining single-mode optical
waveguide
    267.
    发明授权
    Method of fabricating a polarization retaining single-mode optical waveguide 失效
    制造偏振保持单模光波导的方法

    公开(公告)号:US4395270A

    公开(公告)日:1983-07-26

    申请号:US253224

    申请日:1981-04-13

    Abstract: A method of making a glass optical fiber having a core surrounded by cladding containing diametrically opposed regions of different TCE than the cladding. Three manufacturing techniques are disclosed. (1) A first glass rod having core and cladding glass is placed centrally in a glass tube. Rods of glass having a TCE different from that of the cladding glass are put on opposite sides of the first rod. Rods of cladding glass are placed in the interstices. (2) A soot preform is deposited on a rotating mandrel. In one embodiment, mandrel rotation is halted to deposit one longitudinally extending region and then rotated 180.degree. to deposit the other such region. In a modified embodiment the mandrel continuously rotates and the deposition burner is continuously supplied with reactant gas for forming a base glass and is also provided with pulses of a reactant gas for modifying the base glass to form the diametrically opposed regions. (3) A CVD process is modified by inserting a pair of tubes into the substrate tube when the longitudinally extending regions are to be deposited. There is passed between the first tube and the pair of tubes a gas which reacts to form particles of a base glass and there is passed through the pair of tubes another gas which reacts to form dopant glass particles which combine with base glass particles to form longitudinal strips of doped base glass within the tube.

    Abstract translation: 一种制造玻璃光纤的方法,其具有由包含不同TCE的直径相对的区域的包层包围的芯。 公开了三种制造技术。 (1)将具有芯和包层玻璃的第一玻璃棒放置在玻璃管中央。 具有与包层玻璃不同的TCE的玻璃棒放在第一棒的相对侧上。 包层玻璃棒放置在间隙中。 (2)烟灰预制件沉积在旋转的心轴上。 在一个实施例中,停止心轴旋转以沉积一个纵向延伸的区域,然后旋转180度以沉积另一个这样的区域。 在改进的实施例中,心轴连续旋转,并且沉积燃烧器连续地供应有用于形成基础玻璃的反应气体,并且还具有用于改变基础玻璃以形成直径相对的区域的反应气体的脉冲。 (3)当要沉积纵向延伸区域时,通过将一对管插入衬底管中来修饰CVD工艺。 在第一管和一对管之间通过气体,其反应形成基础玻璃的颗粒,并且通过该对管另一气体,其反应形成掺杂剂玻璃颗粒,其与基础玻璃颗粒结合以形成纵向 管内的掺杂基底玻璃条。

    Method of making polarization retaining single-mode optical waveguide
    269.
    发明授权
    Method of making polarization retaining single-mode optical waveguide 失效
    制造偏振保持单模光波导的方法

    公开(公告)号:US4360371A

    公开(公告)日:1982-11-23

    申请号:US249022

    申请日:1981-03-30

    Abstract: A single mode optical waveguide is fabricated in a manner such that the core thereof is subjected to a stress-induced birefringence. A hollow intermediate product is formed by depositing layers of cladding and core glass on the inner surface of a substrate tube. Opposite sides of the intermediate product are heated to cause it to collapse into a solid preform foreproduct having an oblong cross-section. A layer of flame hydrolysis-produced soot having a circular outer surface is deposited on the preform foreproduct and is consolidated to form a dense glass cladding layer thereon. The TCE of the outer cladding layer is different from that of the preform foreproduct on which it is deposited so that when the resultant preform is drawn into a fiber, a stress-induced birefringence exists in the core.

    Abstract translation: 单模光波导以这样的方式制造,使得其芯受到应力诱导的双折射。 通过在衬底管的内表面上沉积包层和芯玻璃层形成中空的中间产物。 加热中间产物的相对侧以使其塌陷成具有长方形横截面的固体预制件前体产品。 将具有圆形外表面的火焰水解生成的烟灰层沉积在预成型件前体上并被固结以在其上形成致密的玻璃包覆层。 外包层的TCE不同于其沉积的预制品前体产品的TCE,使得当将所得的预成型件拉制成纤维时,在芯中存在应力诱导的双折射。

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