公开(公告)号：US4969941A

公开(公告)日：1990-11-13

申请号：US274995

申请日：1988-10-06

申请人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Ichiro Tsuchiya

发明人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Ichiro Tsuchiya

IPC分类号： C03B37/014 ,  F27B5/10 ,  F27B17/00 ,  F27D1/00

CPC分类号： C03B37/0146 ,  C03B37/01446 ,  F27B17/0016 ,  F27B5/10 ,  F27D1/0006 ,  C03B2201/12 ,  C03B2203/22 ,  Y10S65/16

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。

公开(公告)号：US5145507A

公开(公告)日：1992-09-08

申请号：US640556

申请日：1991-01-14

申请人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Akira Urano ,  Hideo Kakuzen

发明人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Akira Urano ,  Hideo Kakuzen

IPC分类号： C03B37/014

CPC分类号： C03B37/01446 ,  C03B37/0146 ,  C03B2201/075 ,  C03B2201/12 ,  Y10S65/16 ,  Y10S65/90

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。

公开(公告)号：US5217516A

公开(公告)日：1993-06-08

申请号：US677414

申请日：1991-03-29

申请人： Yoichi Ishiguro ,  Hiroo Kanamori ,  Akira Urano ,  Michihisa Kyoto

发明人： Yoichi Ishiguro ,  Hiroo Kanamori ,  Akira Urano ,  Michihisa Kyoto

IPC分类号： C03B37/014

CPC分类号： C03B37/01446 ,  C03B37/0146 ,  C03B2201/12 ,  C03B2203/22 ,  Y10S65/16

摘要： A refractive index profile in a glass article is easily controlled by heating a solid or hollow cylindrical glass soot preform in an atmosphere comprising a fluorine-containing compound under such conditions that a partial pressure of the fluorine-containing compound is changed as the heating proceeds so as to control a fluorine concentration in a radial direction of the optical glass article.

摘要翻译： 玻璃制品中的折射率分布可以通过在包含含氟化合物的气氛中加热固体或中空的圆柱形玻璃烟炱预制件，使得随着加热进行而使含氟化合物的分压发生变化的条件 以控制光学玻璃制品的径向氟浓度。

公开(公告)号：US5053068A

公开(公告)日：1991-10-01

申请号：US526522

申请日：1990-05-21

申请人： Michihisa Kyoto ,  Akira Urano ,  Yoichi Ishiguro ,  Minoru Watanabe

发明人： Michihisa Kyoto ,  Akira Urano ,  Yoichi Ishiguro ,  Minoru Watanabe

IPC分类号： G02B6/00 ,  C03B37/014

CPC分类号： C03B37/0146 ,  C03B37/01453 ,  C03B2201/12 ,  Y10S65/16

摘要： A method for producing a glass preform for use in the fabrication of an optical fiber, including the steps of forming a glass soot preform from a glass-forming raw material and heating the soot preform to vitrify it, the soot preform being heated in an atmosphere comprising SiF.sub.4 under pressure higher than 1 atm. for a period of time sufficient to add fluorine, between the formation of the soot preform and the vitrification of it, fluorine being added at a high rate and in a large amount.

摘要翻译： 一种用于制造用于制造光纤的玻璃预制棒的方法，包括以下步骤：从玻璃形成原料形成玻璃烟炱预制件并加热烟炱预制件使其玻璃化，烟炱预制件在气氛中加热 包括在高于1atm的压力下的SiF 4。 在足以添加氟的时间段之间，在形成烟炱预制品和玻璃化之间，氟以高速率和大量添加。

公开(公告)号：US4664690A

公开(公告)日：1987-05-12

申请号：US748561

申请日：1985-06-25

申请人： Michihisa Kyoto ,  Minoru Watanabe ,  Yoichi Ishiguro

发明人： Michihisa Kyoto ,  Minoru Watanabe ,  Yoichi Ishiguro

IPC分类号： C03B37/018 ,  C03B32/00 ,  C03B37/014 ,  G02B6/00 ,  C03B37/027

CPC分类号： C03B37/01446

摘要： A method for producing a glass preform for an optical fiber comprising flame hydrolyzing a glass raw material in an oxyhydrogen flame to form glass fine particles, depositing the glass fine particles on a seed member to produce a solid or hollow cylindrical soot preform, dehydrating by holding the whole soot preform in an atmosphere containing a dehydrating agent kept at such temperature for such period of time that the diameter of the soot preform shrinks by at least 20%, and heating and sintering the dehydrated soot preform by introducing it from its one end in an atmosphere of a pure inert gas to produce a glass preform having a uniform distribution of refractive index along its length, from which glass preform, an optical fiber having attenuation of light transmission as low as 1 dB/km or less at a wavelength of 1.30 micrometer is fabricated.

摘要翻译： 一种制造光纤用玻璃预成型体的方法，其特征在于，在氧氢火焰中火焰水解玻璃原料，形成玻璃微粒，将玻璃微粒沉积在种子部件上，制成固体或中空的圆筒状烟炱预制品， 整个烟灰预制件在含有脱水剂的气氛中保持在这样的温度下一段时间，使得烟灰预制件的直径收缩至少20％，并且通过将脱水烟炱预制件的一端引入 纯惰性气体的气氛，以产生沿其长度具有均匀折射率分布的玻璃预成型件，玻璃预制件，在1.30的波长下具有低至1dB / km或更小的光透射衰减的光纤 制造千分尺。

公开(公告)号：US5158587A

公开(公告)日：1992-10-27

申请号：US726815

申请日：1991-07-08

申请人： Michihisa Kyoto ,  Akira Urano ,  Yoichi Ishiguro ,  Minoru Watanabe

发明人： Michihisa Kyoto ,  Akira Urano ,  Yoichi Ishiguro ,  Minoru Watanabe

IPC分类号： G02B6/00 ,  C03B37/014

CPC分类号： C03B37/0146 ,  C03B37/01453 ,  C03B2201/12 ,  Y10S65/16

摘要： A method for producing a glass preform for use in the fabrication of an optical fiber, which includes the steps of forming a glass soot preform from a glass-forming raw material and heating the soot preform in an atmosphere containing SiF.sub.4 under a pressure higher than 2 atm. for a period of time sufficient to add fluorine during the time between the formation of the soot preform and the vitrification of it, fluorine is added at a high rate and in a larger amount.

摘要翻译： 一种用于制造用于制造光纤的玻璃预制棒的方法，其包括以下步骤：从玻璃形成原料形成玻璃烟炱预制件，并在含有SiF 4的气氛中在高于2的压力下加热烟炱预制件 atm。 在形成烟灰预制件和玻璃化之间的时间期间足以添加氟的时间段，以高速率和更大量添加氟。

公开(公告)号：US5022904A

公开(公告)日：1991-06-11

申请号：US537010

申请日：1990-06-13

申请人： Yoichi Ishiguro ,  Hiroo Kanamori ,  Akira Urano ,  Michihisa Kyoto

发明人： Yoichi Ishiguro ,  Hiroo Kanamori ,  Akira Urano ,  Michihisa Kyoto

IPC分类号： C03B37/014

CPC分类号： C03B37/01446 ,  C03B37/0146 ,  C03B2201/12 ,  C03B2203/22 ,  Y10S65/16

摘要： A refractive index profile in a glass article is easily controlled by heating a solid or hollow cylindrical glass soot preform in an atmosphere comprising a fluorine-containing compound under such conditions that a partial pressure of the fluorine-containing compound is changed as the heating proceeds so as to control a fluorine concentration in a radial direction of the optical glass article.

摘要翻译： 玻璃制品中的折射率分布可以通过在包含含氟化合物的气氛中加热固体或中空的圆柱形玻璃烟炱预制件，使得随着加热进行而使含氟化合物的分压发生变化的条件 以控制光学玻璃制品的径向氟浓度。

公开(公告)号：US4655808A

公开(公告)日：1987-04-07

申请号：US748560

申请日：1985-06-25

申请人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Hiroshi Kawauchi ,  Gotaro Tanaka

发明人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Hiroshi Kawauchi ,  Gotaro Tanaka

IPC分类号： C03B37/018 ,  C03B20/00 ,  C03B37/014 ,  C03C13/04 ,  G02B6/00 ,  C03C25/02 ,  C03B37/075

CPC分类号： C03B37/01446 ,  C03B2201/31 ,  Y02P40/57

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。

公开(公告)号：US5203899A

公开(公告)日：1993-04-20

申请号：US832330

申请日：1992-02-07

申请人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Akira Urano ,  Hideo Kakuzen

发明人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Akira Urano ,  Hideo Kakuzen

IPC分类号： C03B37/014

CPC分类号： C03B37/0146 ,  C03B37/01446 ,  C03B2201/075 ,  C03B2201/12 ,  Y10S65/16 ,  Y10S65/90

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。

公开(公告)号：US5364428A

公开(公告)日：1994-11-15

申请号：US203750

申请日：1994-03-01

申请人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Akira Urano ,  Hideo Kakuzen

发明人： Michihisa Kyoto ,  Yoichi Ishiguro ,  Akira Urano ,  Hideo Kakuzen

IPC分类号： C03B37/014 ,  C03B37/023

CPC分类号： C03B37/01446 ,  C03B37/0146 ,  C03B2201/075 ,  C03B2201/12 ,  Y10S65/16 ,  Y10S65/90

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。