公开(公告)号：US20050257570A1

公开(公告)日：2005-11-24

申请号：US10519016

申请日：2003-07-07

申请人： Richard Schmidt ,  Karsten Brauer

发明人： Richard Schmidt ,  Karsten Brauer

IPC分类号： C03B8/04 ,  C03B37/014 ,  C03B37/018 ,  H05H1/30 ,  C03B37/012

CPC分类号： H05H1/30 ,  C03B37/01426 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2201/12

摘要： The invention relates to a method for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method, according to which a hydrogen-free media flow containing a glass starting material and a carrier gas is fed to a multi-nozzle deposition burner. The glass starting material is introduced into a plasma zone by the deposition burner and is oxidized therein while forming SiO2 particles, and the SiO2 particles are deposited on a deposition surface while being directly vitrified. In order to increase the deposition efficiency, the invention provides that the deposition burner (1) focuses the media flow toward the plasma zone (4) by. A multi-nozzle plasma burner, which is suited for carrying out the method and which is provided with a media nozzle for feeding a media flow to the plasma zone, is characterized in that the media nozzle (7) is designed so that it is focussed toward the plasma zone (4). The focussing is effected by a tapering (6) of the media nozzle (7).

摘要翻译： 本发明涉及一种通过使用等离子体辅助沉积方法由合成石英玻璃制造空白模具的方法，根据该方法，将含有玻璃原料和载气的无氢介质流供给到多喷嘴沉积 刻录机。 通过沉积燃烧器将玻璃原料引入等离子体区，并在其中氧化，同时形成SiO 2颗粒，并将SiO 2颗粒沉积在沉积表面上，同时 被直接玻璃化。 为了提高沉积效率，本发明提供了沉积燃烧器（1）将介质流聚焦到等离子体区（4）。 多喷嘴等离子体燃烧器适用于执行该方法并且设置有用于将介质流馈送到等离子体区域的介质喷嘴，其特征在于，介质喷嘴（7）被设计成使其聚焦 朝向等离子体区（4）。 聚焦由介质喷嘴（7）的锥形（6）实现。

公开(公告)号：US20060213228A1

公开(公告)日：2006-09-28

申请号：US10552539

申请日：2004-04-06

申请人： Gerhard Schotz ,  Karsten Brauer ,  Michael Hunermann ,  Richard Schmidt ,  Heinz Fabian ,  Norbert Treber

发明人： Gerhard Schotz ,  Karsten Brauer ,  Michael Hunermann ,  Richard Schmidt ,  Heinz Fabian ,  Norbert Treber

IPC分类号： C03B37/07 ,  C03B37/018

CPC分类号： C03B37/01291 ,  C03B37/01211 ,  C03B37/01426 ,  C03B37/01466 ,  C03B2201/12 ,  Y02P40/57

摘要： In a known method for the production of a blank mold for optical fibers, a fluorine-doped SiO2 enveloping glass is produced on a core glass cylinder that rotates about its longitudinal axis, wherein a silicon-containing starting substance is fed to a plasma burner, said substance is then oxidized in a plasma flame assigned to the plasma burner to obtain SiO2 particles, the SiO2 particles are deposited by layers on the enveloping surface of the cylinder of the core glass cylinder in the presence of fluorine and sintered into the enveloping glass. The invention aims at providing an economical method, which builds upon the above-mentioned method, in order to produce a blank mold from which optical multi-mode fibers (52) can be obtained. In comparison with fibers (51) produced according to standard methods, said optical multi-mode fibers are characterized by high initial transmission in the UV wavelength range and good resistance with respect to brief UV radiation, more particularly in the 210-300 nm wavelength range. According to the invention, a plasma flame that irradiates an ultraviolet light having a wavelength of 214 nm with an intensity of at least 0.9 ?W—determined on the basis of plasma flame intensity measurement—is used for the formation and deposition of the SiO2 particles on the core glass.

摘要翻译： 在用于生产光纤空白模具的已知方法中，在围绕其纵向轴线旋转的芯玻璃圆筒上产生氟掺杂的SiO 2包封玻璃，其中含硅起始 将物质进料到等离子体燃烧器，然后将所述物质在分配给等离子体燃烧器的等离子体火焰中氧化以获得SiO 2颗粒，SiO 2颗粒通过层 在氟化物存在下在芯玻璃圆筒的圆筒的包络表面上，并烧结到包络玻璃中。 本发明的目的在于提供一种以上述方法为基础的经济的方法，以便制造可得到光学多模光纤（52）的坯模。 与根据标准方法生产的纤维（51）相比，所述光学多模光纤的特征在于在UV波长范围内的初始透射率高，并且对于短暂的UV辐射具有良好的电阻，更特别地在210-300nm波长范围 。 根据本发明，使用基于等离子体火焰强度测量来测量具有至少0.9≤W的强度的波长为214nm的紫外光的等离子体火焰，用于形成和沉积SiO 2， 核心玻璃上的SUB> 2 颗粒。