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    Apparatus and method for manufacturing glass preform
    31.
    发明授权
    Apparatus and method for manufacturing glass preform 有权
    制造玻璃预制件的装置和方法

    公开(公告)号：US09416043B2

    公开(公告)日：2016-08-16

    申请号：US14521617

    申请日：2014-10-23

    Applicant: FUJIKURA LTD.

    Inventor： Takayuki Kitamura

    IPC: C03B37/014 ,  C03B37/018

    CPC classification number: C03B37/01413 ,  C03B37/01807 ,  C03B37/01815 ,  C03B2201/06 ,  C03B2201/50 ,  C03B2201/54 ,  C03B2207/80 ,  C03B2207/90

    Abstract: An apparatus for manufacturing a glass perform, includes: a dummy tube section, a reservoir portion, and a cooling portion; and a glass tube section in which particles of an alkali metal compound or an alkaline earth metal compound which have flowed into the glass tube section from the dummy tube section are heated by a second heat source which performs traverse, and oxides of the particles being deposited on an inner wall and dispersed in the glass tube section. In the cooling portion of the dummy tube section, vapor of the alkali metal compound or the alkaline earth metal compound generated by heating of a first heat source is cooled and condensed by a dry gas flowing into the dummy tube section, and thereby the particles are generated.

    Abstract translation: 一种玻璃制造装置，包括：虚拟管部，储存部和冷却部; 以及玻璃管部分，其中由虚拟管部分流入玻璃管部分的碱金属化合物或碱土金属化合物的颗粒被进行横越的第二热源加热，并且沉积的颗粒的氧化物 在内壁上分散在玻璃管部分。 在虚拟管部的冷却部中，通过第一热源的加热而产生的碱金属化合物或碱土金属化合物的蒸气被流入虚拟管部的干燥气体冷却并冷凝， 生成。

    Barbell optical fiber and method of making the same
    32.
    发明授权
    Barbell optical fiber and method of making the same 有权
    杠铃光纤及其制作方法

    公开(公告)号：US09322988B2

    公开(公告)日：2016-04-26

    申请号：US14395698

    申请日：2013-05-13

    Applicant: OFS Fitel, LLC ,  Raytheon Company

    Inventor： David J Digiovanni ,  Dennis J Trevor ,  David A Rockwell ,  Vladimir V Shkunov

    IPC: G02B6/28 ,  G02B6/028 ,  C03B37/012 ,  C03B37/016 ,  C03B37/018 ,  H01S3/067 ,  H01S3/08 ,  H01S3/16

    CPC classification number: G02B6/028 ,  C03B37/01268 ,  C03B37/01297 ,  C03B37/016 ,  C03B37/018 ,  C03B2201/06 ,  C03B2203/12 ,  C03B2203/22 ,  H01S3/0672 ,  H01S3/06729 ,  H01S3/06737 ,  H01S3/08045 ,  H01S3/1618 ,  H01S3/1698

    Abstract: High aspect ratio core optical fiber designs, which could be semi-guiding, including a core region having a first refractive index and a high aspect ratio elongated cross-section along a slow axis direction, are described. An internal cladding having a second refractive index sandwiches the core and acts as a fast-axis signal cladding. The core has an edge region at both of its short edges that is in contract with edge-cladding regions having a barbell shape. The refractive index of the core regions, the refractive index of the internal claddings, and the refractive index of the edge-cladding regions, are selected so as to maximize the optical power of a lowest-order mode propagating in the fiber core, and to minimize the optical power of the next-order modes in the fiber core. A process to fabricate such a high aspect ratio core fiber is also provided.

    Abstract translation: 描述了可以是半导向的高纵横比纤芯光纤设计，包括沿慢轴方向具有第一折射率和高纵横比细长横截面的芯区域。 具有第二折射率的内部包层夹住芯并用作快轴信号包层。 芯具有在其短边缘处的边缘区域，其与具有杠铃形状的边缘包层区域收缩。 选择核心区域的折射率，内部包层的折射率和边缘包层区域的折射率，以使在纤维芯中传播的最低阶模的光功率最大化，并且 最小化光纤芯中下一阶模式的光功率。 还提供了制造这种高纵横比纤芯的方法。

    Method and apparatus for forming soot for the manufacture of glass
    34.
    发明授权
    Method and apparatus for forming soot for the manufacture of glass 失效
    用于形成用于制造玻璃的烟灰的方法和装置

    公开(公告)号：US06672106B1

    公开(公告)日：2004-01-06

    申请号：US09762307

    申请日：2001-01-31

    Applicant: Daniel W. Hawtof ,  John Stone, III

    Inventor： Daniel W. Hawtof ,  John Stone, III

    IPC: C03B2000

    CPC classification number: C03B19/1423 ,  C03B37/0142 ,  C03B2201/06 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/34 ,  C03B2201/40 ,  C03B2201/50 ,  C03B2201/54 ,  C03B2207/06 ,  C03B2207/08 ,  C03B2207/12 ,  C03B2207/14 ,  C03B2207/20 ,  C03B2207/22 ,  C03B2207/32 ,  C03B2207/34 ,  C03B2207/42 ,  C03B2207/46 ,  C03B2207/80 ,  C03B2207/81 ,  Y02P40/57

    Abstract: The present invention is directed to a method and apparatus for forming soot used in making glass, and in particular, optical waveguides. A liquid precursor (66) is first fed into orifice (52) of a liquid orifice insert (48) within an injector (44) positioned within an atomizing burner assembly, and is thereafter discharged from the injector into a pressurization chamber (56). An atomization gas (70) is also fed into the pressurization chamber (56) to mix with the liquid precursor liquid stream (68) which breaks into droplets (76). The liquid precursor and atomization gas arm forced under pressure out of an atomization orifice (32) on the face of the burner (30) assembly. Flame gas (74), reaction gas (84) and shield gas (82) are ejected from burner orifices (40, 38, 36 and 34) to produce the flame. The atomized liquid precursor thus discharged is fed into the flame (72) produced at the face of the burner assembly where the atomized liquid precursor reacts with the flame to form soot (78) on a rotating mandrel (80).

    Abstract translation: 本发明涉及一种用于形成用于制造玻璃，特别是光波导的烟灰的方法和装置。 液体前体（66）首先被供给到位于雾化燃烧器组件内的喷射器（44）内的液体孔口插入件（48）的孔口（52）中，然后从喷射器排出到加压室（56）中。 雾化气体（70）也被供给到加压室（56）中以与液体前体液体流（68）混合，该液体流体液流（68）分解成液滴（76）。 液体前体和雾化气体臂在压力下被迫从燃烧器（30）组件的表面上的雾化孔（32）流出。 火焰气体（74），反应气体（84）和保护气体（82）从燃烧器孔（40,38,36和34）喷出以产生火焰。 这样排出的雾化的液体前体被送入在燃烧器组件的表面产生的火焰（72）中，其中雾化的液体前体与火焰反应，以在旋转的心轴（80）上形成烟灰（78）。

    Method of manufacturing optical fibers with elimination of paraxial refractive-index dip
    36.
    发明授权
    Method of manufacturing optical fibers with elimination of paraxial refractive-index dip 失效
    消除近轴折射率浸渍制造光纤的方法

    公开(公告)号：US4921516A

    公开(公告)日：1990-05-01

    申请号：US744651

    申请日：1985-06-13

    Applicant: Giacomo Roba

    Inventor： Giacomo Roba

    IPC: C03B19/14 ,  C03B37/018 ,  G02B6/00

    CPC classification number: C03B37/01869 ,  C03B2201/06 ,  C03B2201/28 ,  C03B2201/31

    Abstract: In producing a preform for an optical fiber by MCVD technology, involving the buildup of a core matrix of doped silica layers inside a glass tube with subsequent thermal collapse of the structure, a layer of dopant is deposited on the inner surface of the finished core matrix before the collapse. The thickness of this dopant layer, which advantageously is in a colloidal state, progressively diminishes along the tube axis in a direction away from an end of the tube at which the collapse begins. The law of thickness variation is chosen to maintain an internal gas pressure of vaporized dopant equal to the vapor pressure of the dopant in the core material at the collapsing temperature, in order to prevent the appearance of a paraxial dip in the refractive-index profile of an optical fiber subsequently drawn from the collapsed preform.

    Abstract translation: 在通过MCVD技术生产用于光纤的预成型件时，涉及在玻璃管内形成掺杂的二氧化硅层的核心矩阵，随后结构的热塌陷，在成品芯基体的内表面上沉积一层掺杂剂 崩溃前 有利地是胶体状态的该掺杂剂层的厚度沿着远离管的端部的方向沿着管轴逐渐减小，在该方向上开始崩溃。 选择厚度变化规律以将蒸发掺杂物的内部气体压力保持在塌陷温度下等于芯材料中掺杂剂的蒸汽压力，以防止在折射率分布中的近轴下沉 随后从折叠的预成型件中拉出光纤。

    Method of forming optical fibers
    38.
    发明授权
    Method of forming optical fibers 失效
    形成光纤的方法

    公开(公告)号：US4110090A

    公开(公告)日：1978-08-29

    申请号：US773526

    申请日：1977-03-02

    Applicant: Richard M. Klein

    Inventor： Richard M. Klein

    IPC: C03B37/023 ,  C03B37/027 ,  C03B37/15 ,  C03C13/04 ,  C03C23/00 ,  C03C25/00 ,  C03B37/02

    CPC classification number: C03B37/027 ,  C03B37/023 ,  C03B37/15 ,  C03C13/04 ,  C03C13/045 ,  C03C13/048 ,  C03C23/00 ,  C03C25/002 ,  C03B2201/06

    Abstract: A process is described for forming glass optical fibers by heating a glass composition to vaporize a component of the composition at the surface to reduce the refractive index of the glass surface. Four alternative processes can be used: heat treating a fiber preform followed by drawing the fiber, simultaneous heat treating and fiber pulling from a glass melt, fiber pulling followed by heat treating or heat treating the surface of a melt followed by drawing a fiber or preform so that the surface of the melt comprises the cladding.

    Abstract translation: 描述了通过加热玻璃组合物以蒸发表面组合物的​​组分以降低玻璃表面的折射率来形成玻璃光纤的方法。 可以使用四种可选方法：热处理纤维预制件，然后拉伸纤维，同时从玻璃熔体中进行热处理和纤维拉伸，纤维拉伸，然后热处理或热处理熔体表面，然后拉伸纤维或预成型体 使得熔体的表面包括包层。

    Continuous optical fiber preform fabrication method
    39.
    发明授权
    Continuous optical fiber preform fabrication method 失效
    连续光纤预制棒制造方法

    公开(公告)号：US4062665A

    公开(公告)日：1977-12-13

    申请号：US784869

    申请日：1977-04-05

    Applicant: Tatsuo Izawa ,  Tadashi Miyashita ,  Fumiaki Hanawa

    Inventor： Tatsuo Izawa ,  Tadashi Miyashita ,  Fumiaki Hanawa

    IPC: C03B37/018 ,  C03B37/014 ,  G02B6/00 ,  C03B37/00

    CPC classification number: C03B37/01426 ,  C03B37/014 ,  C03B37/01406 ,  C03B37/01413 ,  C03B37/0142 ,  C03B2201/06 ,  C03B2201/10 ,  C03B2201/42 ,  C03B2203/22 ,  C03B2207/04 ,  C03B2207/12 ,  C03B2207/16 ,  C03B2207/20 ,  C03B2207/22 ,  C03B2207/42 ,  C03B2207/62 ,  C03B2207/70 ,  C03B2207/81 ,  C03B2207/86

    Abstract: A refractory starting member is rotated and, at the same time, moved along the axis of rotation. A glass raw material for the formation of the core of a porous preform and consequently an optical fiber preform is introduced into a high temperature portion near the tip of a high temperature burner from a nozzle for the core disposed in alignment with the center of rotation of one end face of the starting member. The glass raw material blown out from the nozzle for the core are caused by the flames of the high temperature burner to react to produce glass fine particles, which are deposited on abovesaid end face of the starting member at the central portion thereof in its axial direction to form a porous core. At least one nozzle for spraying a glass raw material for the formation of the cladding of the optical fiber preform is disposed opposite to the end face of the starting member but a little deviated from the axis of rotation thereof, or disposed opposite to the peripheral surface of the porous core. The glass raw material for the cladding is sprayed from the nozzle for the cladding to the high temperature portion of the high temperature burner, and caused to react to form glass fine particles, which are deposited on the end face of the starting member on the outside of the porous core or on the peripheral surface thereof at the same time as the formation of the latter, forming a porous cladding. The porous preform thus obtained is moved into a high temperature furnace provided on the path of movement of the preform for the vitrification thereof into an optical fiber preform.

    Abstract translation: 旋转耐火起动部件，并且同时沿着旋转轴线移动。 用于形成多孔预成型件的核心的玻璃原料以及因此的光纤预制件被引入到高温燃烧器的尖端附近的高温部分中，所述高温部分从用于芯部的喷嘴设置成与旋转中心 起始构件的一个端面。 从芯的喷嘴吹出的玻璃原料是由高温燃烧器的火焰引起的反应而产生的玻璃微粒，它们在其中心部分的轴向方向沉积在起始构件的上端面上 以形成多孔芯。 用于喷射用于形成光纤预制件的包层的玻璃原料的至少一个喷嘴设置成与起始构件的端面相对，但是稍微偏离其旋转轴线，或者与周面相对设置 的多孔芯。 用于包层的玻璃原料从用于包层的喷嘴喷射到高温燃烧器的高温部分，并使其反应形成玻璃细颗粒，其沉积在外部的起始构件的端面上 的多孔芯或其外周表面，同时形成多孔芯，形成多孔包层。 将由此获得的多孔预制件移动到设置在预成型体的运动路径上的高温炉中，以将其玻璃化成为光纤预制件。

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