Method for producing glass preform for optical fiber
    1.
    发明授权
    Method for producing glass preform for optical fiber 失效
    光纤玻璃预制棒的制造方法

    公开(公告)号:US4655808A

    公开(公告)日:1987-04-07

    申请号:US748560

    申请日:1985-06-25

    摘要: A method for producing a glass preform comprising flame hydrolyzing a glass raw material in an oxyhydrogen flame to form glass fine particles of quartz, depositing the glass fine particles on a seed member to produce a solid or hollow cylindrical soot preform at least of a part of which contains GeO.sub.2, and heating and sintering the soot preform by introducing it in an atmosphere comprising an inert gas at least a part of which is kept at a temperature not lower than 1,600.degree. C. at an introducing rate not smaller than 3 mm/min, from the glass preform produced by which method, an optical fiber having longitudinally homogeneous composition and low attenuation of light transmission is fabricated.

    摘要翻译: 一种玻璃预制体的制造方法,其特征在于,在氧氢火焰中火焰水解玻璃原料,形成石英的玻璃微粒,将玻璃微粒沉积在种子构件上,至少将一部分 其包含GeO 2,并且通过将烟灰预制品引入包含至少一部分惰性气体的气氛中,以不小于3mm / min的导入速率将其保持在不低于1600℃的温度下进行加热和烧结 从由这种方法生产的玻璃预制件中,制造具有纵向均匀组成的光纤和低透光衰减的光纤。

    Method for producing glass preform for optical fiber
    3.
    发明授权
    Method for producing glass preform for optical fiber 失效
    光纤玻璃预制棒的制造方法

    公开(公告)号:US4693738A

    公开(公告)日:1987-09-15

    申请号:US781636

    申请日:1985-09-30

    摘要: An optical fiber comprising a core essentially made of quartz and a cladding made of fluorine added quartz is fabricated with good productivity from a glass preform produced by a method comprising maintaining a hollow cylindrical porous glass preform in a first high temperature atmosphere comprising at least one fluorine-containing compound with jetting a cooling gas through the central hollow part of the porous glass preform to grade the amount of fluorine to be added in the radial direction of the porous glass preform and then sintering the porous glass preform in a second high temperature atmosphere kept at a temperature higher than the first high temperature atmosphere to make it transparent.

    摘要翻译: 一种由基本上由石英制成的芯和由氟添加的石英制成的包层的光纤由具有良好生产能力的玻璃预制棒制成,所述玻璃预制棒通过包括将中空圆柱形多孔玻璃预制件保持在包括至少一种氟 通过多孔玻璃预制件的中心中空部分喷射冷却气体以分级在多孔玻璃预制件的径向方向上加入的氟量,然后在保持的第二高温气氛中烧结多孔玻璃预制件 在比第一高温气氛高的温度下使其透明。

    Method for the production of glass preform for optical fibers
    6.
    发明授权
    Method for the production of glass preform for optical fibers 失效
    用于生产光纤玻璃预制件的方法

    公开(公告)号:US4586943A

    公开(公告)日:1986-05-06

    申请号:US661451

    申请日:1984-10-16

    IPC分类号: C03B37/014 C03B37/012

    摘要: A method for producing a glass preform for optical fibers by heating a glass soot preform consisting of glass fine particles made mainly of silicon oxide, which method comprises the steps of:(1) heating the glass soot preform to dehydrate and to remove impurities therefrom;(2) heating the glass soot preform in a gas atmosphere containing at least fluorine or fluorine-based compound to add fluorine to the glass soot preform; and(3) heating the glass soot preform to make it transparent, from the transparent preform prepared by which method, an optical fiber having superior transmission characteristics can be prepared.

    摘要翻译: 一种通过加热由主要由氧化硅制成的玻璃微粒组成的玻璃烟炱预制件来制造光纤玻璃预制棒的方法,该方法包括以下步骤:(1)将玻璃烟炱预制件加热脱水并除去杂质; (2)在至少包含氟或氟基化合物的气体气氛中加热玻璃烟灰预制件以向玻璃烟炱预制件中加入氟; 和(3)从通过该方法制备的透明预制件可以制备具有优良传输特性的光纤,加热玻璃烟炱预制件以使其透明。

    Process for producing a glass preform for optical fiber
    7.
    发明授权
    Process for producing a glass preform for optical fiber 失效
    光纤玻璃预制棒的制造方法

    公开(公告)号:US4338111A

    公开(公告)日:1982-07-06

    申请号:US218226

    申请日:1980-12-19

    CPC分类号: C03B37/01446 Y10S65/90

    摘要: A process for producing a preform for glass fiber for optical transmission by heating supply gases to form fine particles that are deposited on a rotating starter member to form an aggregate of fine glass particles which are then sintered to give a transparent vitreous material, characterized by a first heating stage wherein the aggregate of fine glass particles is sintered by increasing the temperature at a constant rate in a gaseous atmosphere which contains a halogen or halide and which has dehydrating activity, followed by holding the aggregate for a given period of time at a temperature in the range that causes considerable shrinkage of the aggregate, and a second heating stage where said aggregate is heated to the vitrifying temperature.

    摘要翻译: 一种用于通过加热供应气体来生产用于光学透射的玻璃纤维的预成型件的方法,以形成沉积在旋转起动器构件上的细颗粒,以形成细玻璃颗粒的聚集体,然后烧结以形成透明玻璃质材料,其特征在于 第一加热阶段,其中通过在含有卤素或卤化物并具有脱水活性的气体气氛中以恒定速率升高温度来烧结微细玻璃颗粒的聚集体,然后将聚集体在一定时间内保持在温度 在导致骨料相当收缩的范围内,以及将所述骨料加热至玻璃化温度的第二加热阶段。

    Method for producing glass preform for optical fiber
    8.
    发明授权
    Method for producing glass preform for optical fiber 失效
    光纤玻璃预制棒的制造方法

    公开(公告)号:US5145507A

    公开(公告)日:1992-09-08

    申请号:US640556

    申请日:1991-01-14

    IPC分类号: C03B37/014

    摘要: A glass preform is produced by forming a glass soot composite body having a core portion consisting of a solid glass and a peripheral portion consisting of a porous glass mass, removing trapped gas and water from pores of the soot composite body by heating the soot composite body under a pressure lower than several ten Torr. at a temperature at which the porous glass mass is not vitrified, filling the pores in the porous glass mass of the soot composite body with a gas containing SiF.sub.4, the partial pressure of which is a function of the desired specific difference of refractive index, thus uniformly adding fluorine to the soot glass mass, and vitrifying the fluorine-added soot glass mass into a transparent glass mass to form a glass preform.

    摘要翻译: 通过形成具有由固体玻璃构成的核心部分和由多孔玻璃组成的周边部分的玻璃烟炱复合体制造玻璃预制件,通过加热烟炱复合体,从烟炱复合体的孔中除去捕获的气体和水 在低于几十乇的压力下。 在多孔玻璃体未被玻璃化的温度下,用含有SiF 4的气体填充烟灰复合体的多孔玻璃体中的孔,其分压是期望的折射率差异的函数,因此 向烟灰玻璃块均匀地加入氟,并将氟化烟炱玻璃块玻璃化成透明玻璃块以形成玻璃预制件。

    Method for producing glass preform for optical fiber
    9.
    发明授权
    Method for producing glass preform for optical fiber 失效
    光纤玻璃预制棒的制造方法

    公开(公告)号:US5203899A

    公开(公告)日:1993-04-20

    申请号:US832330

    申请日:1992-02-07

    IPC分类号: C03B37/014

    摘要: A glass preform which is used for fabricating an optical fiber, has substantially no bubbles therein and contains sufficient amount of fluorine is produced by a method comprising steps of: forming a porous glass soot body from a glass-forming raw material, removing trapped gas and water from pores of the soot body by heating the soot body under pressure lower than several ten Torr. at a temperature at which the soot body is not vitrified, filling the pores of the soot body with a gas containing SiF.sub.4 and uniformly adding fluorine to the soot body, vitrifying the fluorine-added soot body into a transparent glass body, boring said transparent glass body to form a bore therein, and inserting a highly pure quartz rod in said bore to form a glass preform, or a method forming a glass soot composite body having a core portion consisting of a solid glass and a peripheral portion consisting of a porous glass mass, removing trapped gas and water from pores of the soot composite body by heating the soot composite body under a pressure lower than several ten Torr. at a temperature at which the porous glass mass is not vitrified, filling the pores in the porous glass mass of the soot composite body with a gas containing SiF.sub.4 and uniformly adding fluorine to the soot glass mass, and vitrifying the fluorine-added soot glass mass into a transparent glass mass to form a glass preform.

    摘要翻译: 用于制造光纤的玻璃预成型体在其中基本上没有气泡并且通过包括以下步骤的方法制造含有足够量的氟:从玻璃形成原料形成多孔玻璃烟炱体,除去被捕获的气体和 通过在低于几十乇的压力下加热烟灰体,从烟灰体的孔中吸收水分。 在烟灰体未被玻璃化的温度下,用含有SiF 4的气体填充烟灰体的孔,并将氟均匀地添加到烟炱体中,将氟化烟炱体玻璃化成透明玻璃体,使透明玻璃镗孔 在其中形成孔,并且将高纯石英棒插入所述孔中以形成玻璃预制件,或者形成玻璃烟灰复合体的方法,所述玻璃烟灰复合体具有由实心玻璃构成的芯部和由多孔玻璃构成的周边部 通过在低于几十乇的压力下加热烟灰复合体,从烟灰复合体的孔中除去捕获的气体和水。 在多孔玻璃体未被玻璃化的温度下,用含有SiF 4的气体填充烟灰复合体的多孔玻璃块中的孔,并向烟灰玻璃块均匀地加入氟,并且将添加氟的烟灰玻璃块 变成透明玻璃块以形成玻璃预制件。

    Furnace for heating glass preform for optical fiber and method for
producing glass preform
    10.
    发明授权
    Furnace for heating glass preform for optical fiber and method for producing glass preform 失效
    用于加热用于光纤的玻璃预制件的炉和用于生产玻璃预制件的方法

    公开(公告)号:US4969941A

    公开(公告)日:1990-11-13

    申请号:US274995

    申请日:1988-10-06

    摘要: A heating furnace for heating a porous preform made of fine particles of quartz base glass for an optical fiber in an atmosphere comprising a fluorine-containing atmosphere to add fluorine to the preform and to vitrify the preform to produce a glass preform for an optical fiber, which comprises a heater and a muffle tube positioned inside the heater to separate a heating atmosphere from the heater, wherein at least the inner layer of the muffle tube consists of highly pure carbon.

    摘要翻译: PCT No.PCT / JP88 / 00151 Sec。 371日期:1988年10月6日 102(e)日期1988年10月6日PCT提交1988年2月16日PCT公布。 出版物WO88 / 06145 日本1988年8月25日。一种加热炉,用于在包含含氟气氛的气氛中加热由用于光纤的石英基底玻璃的细颗粒制成的多孔预成型件,以将氟加入到预成型件中并使预制件玻璃化以产生 用于光纤的玻璃预制件,其包括位于加热器内部的加热器和马弗管,以将加热气体与加热器分离,其中马弗管的至少内层由高纯度的碳构成。