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12 条记录 (耗时 0.012 秒)

    Optical waveguide glass fiber flame processing
    4.
    发明授权
    Optical waveguide glass fiber flame processing 失效
    光波导玻璃纤维火焰加工

    公开(公告)号：US4689065A

    公开(公告)日：1987-08-25

    申请号：US829527

    申请日：1986-02-14

    申请人： John T. Krause

    发明人： John T. Krause

    IPC分类号： G02B6/24 ,  C03B23/043 ,  C03B23/207 ,  C03B37/027 ,  C03B37/15 ,  G02B6/00 ,  G02B6/255 ,  C03B37/023

    CPC分类号： G02B6/2551 ,  C03B23/043 ,  C03B23/207 ,  C03B37/02736 ,  C03B37/15 ,  C03B2205/30 ,  C03B2205/68

    摘要： In the interest of reducing the effect on tensile strength of flame processing of a silica-based optical fiber waveguide, such processing is by a method in which a significant flow of oxygen surrounds a flame produced by combustion of hydrogen, deuterium, ammonia, or deuterated ammonia. Flame processing may be for purposes such as, e.g., fiber drawing, fiber fusing for the sake of lateral coupling, refractive index modification by the diffusion of dopants, and fiber splicing in the manufacture of long lengths of fiber. Even though there is no use of chlorine, at least 80 percent of spliced fibers have a tensile strength greater than or equal to 500 kpsi (3.45 GPa) as is desirable in optical fiber cable manufacture.

    摘要翻译： 为了减少对二氧化硅基光纤波导的火焰加工的拉伸强度的影响，这种处理是通过一种方法，其中显着的氧气流包围由氢，氘，氨或氘代的燃烧产生的火焰 氨。 火焰处理可以用于例如纤维拉伸，为了横向耦合的光纤熔合，通过掺杂剂的扩散的折射率改性以及在长的纤维长度的制造中的纤维拼接。 即使不使用氯，至少80％的拼接纤维的拉伸强度大于或等于500kpsi（3.45GPa），如在光缆制造中所希望的。

    Optical fiber drawing using plasma torch
    5.
    发明授权
    Optical fiber drawing using plasma torch 失效
    使用等离子体焰炬的光纤拉丝

    公开(公告)号：US4440556A

    公开(公告)日：1984-04-03

    申请号：US391273

    申请日：1982-06-23

    申请人： Shin M. Oh ,  Dilip K. Nath ,  Pablo C. Pureza

    发明人： Shin M. Oh ,  Dilip K. Nath ,  Pablo C. Pureza

    IPC分类号： C03B37/025 ,  C03B37/027 ,  C03B37/029 ,  G02B6/00

    CPC分类号： C03B37/02718 ,  C03B37/029 ,  C03B2205/68

    摘要： In order to provide a high power heat source having a very clean and invariable heat flux, a ring plasma is induced in a heating zone of a plasma torch including a plurality of coaxial tubular elements and the optical fiber is drawn through a channel passing axially through the center of the plasma torch and of the ring-shaped plasma. In this manner the preform from which the fiber is drawn can be placed in close proximity to the induced plasma without exposure to non-symmetrical temperature variations. Cooling gas passes through the heating zone either in an annular stream surrounding the plasma or in an annular stream passing through the center of the plasma around the preform and the fiber being drawn, or both. The heating zone is protected from environmental disturbances by an extension of the outer tubular element of the plasma torch which surrounds the heating zone. The plasma is induced by an RF source in an undisturbed stream of a plasma-forming gaseous medium, such as argon or a mixture of argon with oxygen, which flows through the heating zone.

    摘要翻译： 为了提供具有非常干净且不变的热通量的高功率热源，在包括多个同轴管状元件的等离子体焰炬的加热区域中感应出环等离子体，并且光纤通过轴向通过的通道 等离子体焰炬的中心和环形等离子体。 以这种方式，纤维被拉伸的预成型件可以放置在接近感应等离子体的同时不暴露于非对称的温度变化。 冷却气体以围绕等离子体的环形流或穿过预制件周围的等离子体中心的环形流或被拉伸的纤维或两者都通过加热区。 通过围绕加热区域的等离子体焰炬的外部管状元件的延伸来保护加热区免受环境干扰。 等离子体由等离子体形成的气体介质（例如氩气或氩气与氧气的混合物）的未干扰的流中的RF源引发，其流过加热区。

    Method for producing porous glass fine particle body and method for producing optical fiber preform
    7.
    发明授权
    Method for producing porous glass fine particle body and method for producing optical fiber preform 有权

    公开(公告)号：US11780761B2

    公开(公告)日：2023-10-10

    申请号：US17053169

    申请日：2019-04-12

    申请人： Fujikura Ltd.

    发明人： Nobutoshi Sato

    IPC分类号： C03B37/018

    CPC分类号： C03B37/018 ,  C03B2205/68

    摘要： A method for producing a porous glass fine particle body includes: a first layer formation step of continuously forming in a longitudinal direction of a rotating starting base material without a break, a first soot layer on a surface of the rotating starting base material; and an second layer formation step of forming second soot layers on an outside of the first soot layer while supplying a raw material gas to each of a burner among burners of a burner group and moving the burner group in a reciprocating manner in the longitudinal direction relative to the rotating starting base material. The burner group and the starting base material move relatively to each other along the longitudinal direction.

    Method of making optical fiber using a plasma torch fiber-drawing furnace
    8.
    发明授权
    Method of making optical fiber using a plasma torch fiber-drawing furnace 失效
    使用等离子体焰炬拉丝炉制造光纤的方法

    公开(公告)号：US5672192A

    公开(公告)日：1997-09-30

    申请号：US655580

    申请日：1996-05-30

    申请人： James William Fleming, Jr.

    发明人： James William Fleming, Jr.

    IPC分类号： G02B6/00 ,  C03B23/043 ,  C03B23/045 ,  C03B37/027 ,  C03B37/029

    CPC分类号： C03B23/045 ,  C03B23/043 ,  C03B37/029 ,  C03B2205/68

    摘要： In accordance with the invention, an optical fiber is made by the steps of providing an optical fiber preform having a longitudinal axis, rotating the preform about the axis, directing onto the preform a plasma torch which is reciprocated over a limited region parallel to the axis to define a heated region, and drawing a fiber from the heated region. Apparatus for making optical fiber comprises a rotatable mount for securing one end of a preform and rotating it about a vertical axis, a plasma torch for heating a drawing region on the preform, a positioning stage for moving the torch parallel to the vertical axis in a reciprocating manner, and a fiber drawing apparatus for drawing a fiber from the heated region of the preform.

    摘要翻译： 根据本发明，通过以下步骤制造光纤：提供具有纵向轴线的光纤预制棒，使预成型件围绕轴线旋转，将预成型件引导到预成型件上等离子体焰炬，其在平行于轴线的有限区域上往复运动 以限定加热区域，并从加热区域拉伸纤维。 用于制造光纤的装置包括用于固定预成型件的一端并​​绕其垂直轴线旋转的可旋转安装架，用于加热预成型件上的拉伸区域的等离子体焰炬，用于将手电筒平行于垂直轴线移动的定位台 以及用于从预成型体的加热区域拉伸纤维的纤维拉伸装置。

    Oxyhydrogen flame torch for optical fiber drawing
    10.
    发明授权
    Oxyhydrogen flame torch for optical fiber drawing 失效
    用于光纤拉丝的氧氢火焰焰炬

    公开(公告)号：US4428760A

    公开(公告)日：1984-01-31

    申请号：US361659

    申请日：1982-03-25

    申请人： Shin M. Oh

    发明人： Shin M. Oh

    IPC分类号： C03B37/029 ,  C03B37/025

    CPC分类号： C03B37/029 ,  C03B2205/68

    摘要： An oxyhydrogen torch for use in drawing an optical fiber from a preform without axial rotation includes four coaxial tubular elements bounding respective passages. The fiber is coaxially drawn through the innermost passage, and hydrogen, oxygen and an inert gas are respectively individually admitted into the successively outer passages at their upstream ends in the circumferential directions of the respective passages. Oxygen and hydrogen become mixed with one another and combust after leaving the downstream ends of the respective passages to form an annular oxyhydrogen flame in a heating zone of the torch around the portion of the preform from which the fiber is being drawn. The inert gas, such as argon or nitrogen, flows past the flame in the heating zone to shield the flame from environmental disturbances. The outermost tubular element has an extension which surrounds the heating zone and confines the stream of the shielding inert gas to provide an improved shielding effect for the flame, while being cooled by the shielding gas.

    摘要翻译： 用于从不具有轴向旋转的预成型件拉制光纤的氢氧炬包括限定各个通道的四个同轴管状元件。 纤维同轴地穿过最内通道，氢，氧和惰性气体分别在相应通道的周向方向的上游端分别进入连续的外通道。 氧气和氢气彼此混合并在离开相应通道的下游端之后燃烧，在火炬的加热区域中围绕预成型件的从纤维被拉伸的部分形成环形氢氧焰。 惰性气体，例如氩气或氮气，流过加热区域中的火焰，以阻挡火焰免受环境扰动。 最外面的管状元件具有围绕加热区并且限制屏蔽惰性气体流的延伸部分，以在由保护气体冷却的同时为火焰提供改进的屏蔽效果。