公开(公告)号：US06928841B2

公开(公告)日：2005-08-16

申请号：US10142689

申请日：2002-05-10

Applicant: Fengqing Wu

Inventor： Fengqing Wu

IPC: C03B37/014 ,  C03B37/018 ,  C03C15/00

CPC classification number: C03B37/0146 ,  C03B37/01446 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2201/32

Abstract: The specification describes a VAD method for producing optical fiber preforms by depositing soot onto a solid core rod. The solid core rod preferably has a uniform composition, doped or undoped, suitable for the center core region of the preform. The primary cladding layer, and additional cladding layers if desired, are produced by depositing soot on the center core rod. The surface of the center core rod is treated with an etchant torch that traverses the center core rod in front of the soot deposition torch. This produces a clean interface between the core and primary cladding. This soot-on-center-core-rod method allows the production of sharp index profiles by reducing the diffusion of dopants into and out of the center core portion of the preform that occurs in soot-on-soot processes.

Abstract translation: 该说明书描述了通过将烟灰沉积在实心芯棒上来生产光纤预制棒的VAD方法。 固体芯棒优选具有适合于预成型件的中心芯区域的均匀组成，掺杂或未掺杂。 如果需要，初级包层和附加的包覆层是通过在中心芯棒上沉积烟灰而产生的。 中心芯棒的表面用在烟灰沉积火炬前面穿过中心芯棒的蚀刻炬进行处理。 这在芯和初级包层之间产生干净的界面。 这种烟灰中心芯棒方法允许通过减少掺杂剂进入和吹出在烟灰过程中发生的预制棒的中心芯部分的扩散而产生尖锐的折射率分布。

公开(公告)号：US20050172676A1

公开(公告)日：2005-08-11

申请号：US10512523

申请日：2003-04-28

Applicant: Knut Roselieb ,  Sven Schmidt

Inventor： Knut Roselieb ,  Sven Schmidt

IPC: C03B20/00 ,  C03B8/04 ,  C03B19/14 ,  C03B37/014 ,  C03B37/018 ,  G02B6/18

CPC classification number: C03B19/1453 ,  C03B37/01446 ,  C03B37/0146 ,  C03B2201/04 ,  Y02P40/57

Abstract: According to a previously known method for producing a cylindrical quartz glass body having a low OH content, first an elongate, porous soot body is produced on a rotating support by flame-hydrolyzing a silicon-containing compound and removing layers of SiO2 particles, whereupon said soot body is subjected to a dehydration treatment and is vitrified in a vitrification furnace. The aim of the invention is to create a simple method which is based on said method and makes it possible to produce a quartz glass cylinder having a low OH content while evenly distributing the OH concentration without additional technical complexity. Said aim is achieved by subjecting the soot body to a pretreatment in protective gas and/or a vacuum in the vitrification furnace following the dehydration treatment but prior to the vitrification thereof, the soot body being heated to a temperature ranging between 100° C. and 1350° C. in a heating area.

Abstract translation: 根据先前已知的具有低OH含量的圆柱形石英玻璃体的制造方法，首先通过火焰水解含硅化合物并除去SiO 2层，在旋转载体上产生细长的多孔烟炱体 然后将所述烟灰体进行脱水处理，并在玻璃化炉中进行玻璃化。 本发明的目的是创建一种基于所述方法的简单方法，并且使得可以生产具有低OH含量的石英玻璃圆筒，同时均匀分布OH浓度而没有额外的技术复杂性。 所述目的是通过在脱水处理之后使烟灰体经受玻璃化炉中的保护气体和/或真空中的预处理，但在其玻璃化之前将烟灰体加热至100℃和 1350°C。

公开(公告)号：US20050092030A1

公开(公告)日：2005-05-05

申请号：US10699446

申请日：2003-10-31

Applicant: Jitendra Balakrishnan ,  Dana Bookbinder ,  Lisa Chacon ,  Steven Dunwoody ,  Kintu Early ,  Daniel Hawtof ,  Prantik Mazumder ,  Amy Rovelstad ,  Susan Schiefelbein ,  Pushkar Tandon

Inventor： Jitendra Balakrishnan ,  Dana Bookbinder ,  Lisa Chacon ,  Steven Dunwoody ,  Kintu Early ,  Daniel Hawtof ,  Prantik Mazumder ,  Amy Rovelstad ,  Susan Schiefelbein ,  Pushkar Tandon

IPC: C03B37/014 ,  C03B37/018

CPC classification number: C03B37/0142 ,  C03B37/01486 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2203/29 ,  C03B2207/38 ,  C03B2207/52 ,  C03B2207/66 ,  C03B2207/70

Abstract: The invention includes methods and apparatus for depositing soot onto a glass surface to minimize water in the deposited soot and the diffusion of the water into the glass surface. The invention includes depositing a first layer of soot a on the glass surface at a first forward traverse rate and depositing a second layer of soot at a second forward traverse rate.

Abstract translation: 本发明包括用于将烟灰沉积在玻璃表面上以最小化沉积的烟灰中的水和将水扩散到玻璃表面中的方法和装置。 本发明包括以第一向前横移速率沉积玻璃表面上的第一层烟灰a并以第二前进横向速率沉积第二层烟灰。

公开(公告)号：US20040187525A1

公开(公告)日：2004-09-30

申请号：US10403149

申请日：2003-03-31

Inventor： Calvin T. Coffey ,  Amy L. Rovelstad

IPC: C03B037/075

CPC classification number: C03B19/106 ,  C03B19/1415 ,  C03B19/1423 ,  C03B37/01413 ,  C03B37/0142 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2207/85

Abstract: The present invention relates to a method of making a soot particle and apparatus for making such soot particle. Preferably the method of making the soot particle is substantially free of the step of combusting a fuel and substantially free of the step of forming a plasma. Preferably, the apparatus is devoid of a heating element associated with both combustion and formation of a plasma. A preferred technique for at least one heating step for forming the soot particle is induction heating.

Abstract translation: 本发明涉及制备烟灰颗粒的方法和制造这种烟灰颗粒的装置。 优选地，制造烟灰颗粒的方法基本上没有燃烧燃料的步骤，并且基本上没有形成等离子体的步骤。 优选地，该装置没有与燃烧和等离子体的形成相关联的加热元件。 用于形成烟灰颗粒的至少一个加热步骤的优选技术是感应加热。

公开(公告)号：US20040159124A1

公开(公告)日：2004-08-19

申请号：US10366888

申请日：2003-02-14

Inventor： Robert M. Atkins ,  James W. Fleming ,  Paul F. Glodis ,  Man F. Yan

IPC: C03B037/018 ,  C03B037/075

CPC classification number: C03B37/01869 ,  C03B37/01211 ,  C03B37/01248 ,  C03B37/01861 ,  C03B2201/04 ,  C03B2203/22

Abstract: The specification describes methods for the manufacture of very large optical fiber preforms wherein the core material is produced by MCVD. Previous limitations on preform size inherent in having the MCVD starting tube as part of the preform process are eliminated by removing the MCVD starting tube material from the collapsed MCVD rod by etching or mechanical grinding. Doped overcladding tubes are used to provide the outer segments of the refractive index profile thus making most effective use of the MCVD produced glass and allowing the production of significantly larger MCVD preforms than previously possible.

Abstract translation: 该说明书描述了用于制造非常大的光纤预制件的方法，其中芯材料通过MCVD制造。 通过蚀刻或机械研磨，通过从收缩的MCVD棒中除去MCVD起始管材料，从而消除了将MCVD起始管作为预制件工艺的一部分而固有的预制件尺寸的限制。 掺杂的外包管用于提供折射率分布的外部部分，从而最有效地利用MCVD生产的玻璃，并允许生产比之前可能的显着更大的MCVD预成型件。

公开(公告)号：US06672107B2

公开(公告)日：2004-01-06

申请号：US09913632

申请日：2001-08-16

Applicant: Waltraud Werdecker ,  Johann Leist

Inventor： Waltraud Werdecker ,  Johann Leist

IPC: C03B1906

CPC classification number: C03C3/06 ,  C03B19/09 ,  C03B19/095 ,  C03B2201/04 ,  C03C2201/02 ,  C03C2201/23 ,  C03C2201/80 ,  C30B15/10 ,  C30B35/002 ,  Y10S65/04 ,  Y10T428/131

Abstract: In order to provide a quartz glass crucible distinguished by high purity, high opacity and/or low transmissibility in the IR spectrum, it is proposed on the basis of a known quartz glass crucible of opaque quartz glass with a crucible body symmetrical in relation to a rotational axis, an outer zone (3) of opaque quartz glass transitioning radially toward the inside into an inner zone (2) of transparent quartz glass and with a density of at least 2.15 g/cm3, that according to the invention, the crucible body (1) be made of a synthetic SiO2 granulate with a specific BET surface ranging from 0.5 m2/g to 40 m2/g, a tamped volume of at least 0.8 g/cm3 and produced from at least partially porous agglomerates of SiO2 primary particles. A process for producing a quartz glass crucible of this kind is distinguished according to the invention in that for the production of the crucible a SiO2 granulate is used which was formed from at least partially porous agglomerates of synthetically manufactured SiO2 primary particles and that it has a specific BET surface ranging from 0.5 m2/g to 40 m2/g and a tamped volume of at least 0.8 g/cm3, the heating effected in such a way that a vitrification front advances from the inside outward while an inner zone (4) of transparent quartz glass is being formed.

Abstract translation: 为了提供在IR光谱中具有高纯度，高不透明性和/或低透射率的石英玻璃坩埚，提出了在已知的不透明石英玻璃的石英玻璃坩埚的基础上，坩埚体相对于 旋转轴线，不透明石英玻璃的外部区域（3），径向朝向内部转变成透明石英玻璃的内部区域（2），密度为至少2.15g / cm 3，根据本发明， 坩埚体（1）由合成SiO 2颗粒制成，比表面积为0.5m 2 / g至40m 2 / g，捣实体积至少为0.8g / cm 3， 由SiO 2一次颗粒的至少部分多孔的附聚物制成。 根据本发明，制造这种石英玻璃坩埚的方法的不同之处在于，对于坩埚的制造，使用由至少部分多孔的合成SiO 2原生颗粒的聚集体形成的SiO 2颗粒，并且其具有 比表面积为0.5m 2 / g至40m 2 / g，捣实体积为至少0.8g / cm 3，加热使玻璃化前沿从内部进入 外部形成透明石英玻璃的内部区域（4）。

公开(公告)号：US20030209516A1

公开(公告)日：2003-11-13

申请号：US10142689

申请日：2002-05-10

Inventor： Fengqing Wu

IPC: C03C015/00

CPC classification number: C03B37/0146 ,  C03B37/01446 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2201/32

Abstract: The specification describes a VAD method for producing optical fiber preforms by depositing soot onto a solid core rod. The solid core rod preferably has a uniform composition, doped or undoped, suitable for the center core region of the preform. The primary cladding layer, and additional cladding layers if desired, are produced by depositing soot on the center core rod. The surface of the center core rod is treated with an etchant torch that traverses the center core rod in front of the soot deposition torch. This produces a clean interface between the core and primary cladding. This soot-on-center-core-rod method allows the production of sharp index profiles by reducing the diffusion of dopants into and out of the center core portion of the preform that occurs in soot-on-soot processes.

Abstract translation: 该说明书描述了通过将烟灰沉积在实心芯棒上来生产光纤预制棒的VAD方法。 固体芯棒优选具有适合于预成型件的中心芯区域的均匀组成，掺杂或未掺杂。 如果需要，初级包层和附加的包覆层是通过在中心芯棒上沉积烟灰而产生的。 中心芯棒的表面用在烟灰沉积火炬前面穿过中心芯棒的蚀刻炬进行处理。 这在芯和初级包层之间产生干净的界面。 这种烟灰中心芯棒方法允许通过减少掺杂剂进入和吹出在烟灰过程中发生的预制棒的中心芯部分的扩散而产生尖锐的折射率分布。

公开(公告)号：US20030124044A1

公开(公告)日：2003-07-03

申请号：US10303899

申请日：2002-11-26

Applicant: JAPAN SUPER QUARTZ CORPORATION

Inventor： Masanori Fukui ,  Takahiro Satoh

IPC: C01B033/12

CPC classification number: C30B35/002 ,  C03B19/1065 ,  C03B2201/04 ,  C03B2201/20 ,  C03C1/026 ,  C30B15/10 ,  Y10T117/10 ,  Y10T428/13 ,  Y10T428/131 ,  Y10T428/1317

Abstract: A modified synthetic silica powder is produced by heating in vacuum an amorphous synthetic silica powder produced by a sol-gel process, and then cooling the heated silica powder in an atmosphere containing helium. When the modified synthetic silica powder is fused and vitrified in a process of crucible production, the resulting quartz glass crucible contains hardly any bubbles.

Abstract translation: 通过在真空中加热通过溶胶 - 凝胶法制备的无定形合成二氧化硅粉末，然后在含有氦气的气氛中冷却加热的二氧化硅粉末来制备改性合成二氧化硅粉末。 当改性合成二氧化硅粉末在坩埚生产过程中熔融和玻璃化时，所得石英玻璃坩埚几乎不含任何气泡。

公开(公告)号：US20030115910A1

公开(公告)日：2003-06-26

申请号：US10318183

申请日：2002-12-13

Applicant: Shin-Etsu Chemical Co., Ltd.

Inventor： Hiroshi Oyamada ,  Tetsuya Otosaka

IPC: C03B037/018

CPC classification number: C03C13/00 ,  C03B37/01446 ,  C03B2201/04 ,  C03B2201/075

Abstract: A method for manufacturing a preform, which is a base material of an optical fiber, comprising: forming porous-glass-base-material by accumulating glass particles; dehydrating the porous-glass-base-material by heating the porous-glass-base-material in an atmosphere of gas that contains chlorine; heating the porous-glass-base-material dehydrated by the dehydrating with a first heating temperature in an atmosphere of a first inert gas; and vitrifying the porous-glass-base-material by heating the porous-glass-base-material with a second heating temperature in an atmosphere of second inert gas.

Abstract translation: 一种制造作为光纤的基材的预成型体的制造方法，其特征在于，包括：通过蓄积玻璃粒而形成多孔玻璃基材料; 通过在包含氯的气体气氛中加热多孔玻璃基材料来使多孔玻璃基材料脱水; 在第一惰性气体的气氛中，以第一加热温度加热脱水脱水的多孔玻璃基材料; 以及在第二惰性气体的气氛中以第二加热温度加热多孔玻璃基材料来使多孔玻璃基材料玻璃化。

公开(公告)号：US20020157420A1

公开(公告)日：2002-10-31

申请号：US09844081

申请日：2001-04-27

Inventor： Kenneth E. Hrdina ,  Nikki J. Russo ,  Michael H. Wasilewski

IPC: C03B019/06 ,  C03B019/14

CPC classification number: C03B19/1453 ,  C03B19/1407 ,  C03B19/1484 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2201/42 ,  C03B2207/32

Abstract: A method for forming a fused silica glass includes delivering a silica precursor to a burner and passing the silica precursor through the flame of the burner to form silica particles, depositing the silica particles on a planar surface to form a flat, porous preform, dehydrating the porous preform, and consolidating the porous preform into a flat, dense glass.

Abstract translation: 用于形成熔融石英玻璃的方法包括将二氧化硅前体输送到燃烧器并使二氧化硅前体通过燃烧器的火焰以形成二氧化硅颗粒，将二氧化硅颗粒沉积在平坦表面上以形成平坦多孔的预制件，使 多孔预制件，并将多孔预成型件固结成平坦，致密的玻璃。