公开(公告)号：US4812155A

公开(公告)日：1989-03-14

申请号：US132655

申请日：1987-12-10

申请人： Michihisa Kyoto ,  Naoki Yoshioka ,  Gotaro Tanaka ,  Hiroo Kanamori ,  Minoru Watanabe ,  Motohiro Nakahara

发明人： Michihisa Kyoto ,  Naoki Yoshioka ,  Gotaro Tanaka ,  Hiroo Kanamori ,  Minoru Watanabe ,  Motohiro Nakahara

IPC分类号： C03B37/014 ,  C03B37/018

CPC分类号： C03B37/01446 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/42 ,  C03B2203/22 ,  Y10S65/16

摘要： A method for producing a glass preform for optical fibers in which fluorine is efficiently incorporated into the preform without incorporation of Fe or Cu. A fine glass particle mass, made primarily of quartz, is converted into transparent glass by heating it in a gas atmosphere containing at least a fluorine-based compound gas and a chlorine-based compound gas. The preferred heating range is 1,100.degree. to 1,400.degree. C.

摘要翻译： 一种用于制造光纤的玻璃预制棒的方法，其中氟被有效地结合到预成型体中而不引入Fe或Cu。 主要由石英制成的微细玻璃颗粒物质通过在至少含有氟基化合物气体和氯基化合物气体的气体气氛中加热而转化为透明玻璃。 优选的加热范围为1100至1400℃。

公开(公告)号：US4880452A

公开(公告)日：1989-11-14

申请号：US289444

申请日：1988-12-22

申请人： Hiroo Kanamori ,  Gotaro Tanaka ,  Michihisa Kyoto ,  Naoki Yoshioka ,  Futoshi Mizutani

发明人： Hiroo Kanamori ,  Gotaro Tanaka ,  Michihisa Kyoto ,  Naoki Yoshioka ,  Futoshi Mizutani

IPC分类号： B65G47/90 ,  B23Q7/04 ,  B25J5/02 ,  B25J19/00 ,  B66C1/22 ,  B66C1/24 ,  B66C11/02 ,  B66C11/04 ,  B66C11/06 ,  B66C13/12 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  G02B6/00

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

摘要： A method for producing a glass preform for an optical fiber comprising a core and a cladding containing fluorine is fisclosed. The method comprises forming a porous glass layer of substantially pure quartz on an outer surface of a fused glass rod consisting of a central portion of substantially pure quartz and a peripheral portion of quartz glass containing fluorine, and heating a composite of the fused glass rod and the porous glass layer in an atmosphere containing fluorine to add fluorine to the porous glass layer and to make it transparent, by which contamination of glass with hydroxyl groups can be prevented and light transmission characteristics of an optical fiber fabricated from the glass preform are improved.

摘要翻译： 公开了一种用于生产包含芯和包含氟的包层的光纤玻璃预制棒的方法。 该方法包括在由基本上纯的石英的中心部分和含氟的石英玻璃的周边部分组成的熔融玻璃棒的外表面上形成基本上纯的石英的多孔玻璃层，并加热熔融的玻璃棒和 在含氟的气氛中的多孔玻璃层，向多孔玻璃层中添加氟并使其透明化，由此可以防止由羟基引起的玻璃的污染，并提高由玻璃预制件制造的光纤的透光特性。

公开(公告)号：US4586943A

公开(公告)日：1986-05-06

申请号：US661451

申请日：1984-10-16

申请人： Michihisa Kyoto ,  Naoki Yoshioka ,  Gotaro Tanaka ,  Minoru Watanabe ,  Hiroshi Shimba ,  Nobuo Inagaki

发明人： Michihisa Kyoto ,  Naoki Yoshioka ,  Gotaro Tanaka ,  Minoru Watanabe ,  Hiroshi Shimba ,  Nobuo Inagaki

IPC分类号： C03B37/014 ,  C03B37/012

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

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。

公开(公告)号：US5221309A

公开(公告)日：1993-06-22

申请号：US938502

申请日：1992-08-31

申请人： Michihisa Kyoto ,  Minoru Watanabe ,  Hiroo Kanamori

发明人： Michihisa Kyoto ,  Minoru Watanabe ,  Hiroo Kanamori

IPC分类号： C03B37/014

CPC分类号： C03B37/0146 ,  C03B37/01446 ,  C03B2201/12 ,  C03B2203/22 ,  Y10S65/16 ,  Y10S65/90

摘要： A method for producing a glass preform, which method comprises forming a soot preform of glass fine particles comprising SiO.sub.2 by flame hydrolysis or solution hydrolysis of a starting glass material and sintering the soot preform in an atmosphere containing at least SiF.sub.4 to obtain a glass preform which is free from an increase in absorption due to impurities and has sufficiently low attenuation of light transmission.

摘要翻译： 一种制造玻璃预成型体的方法，该方法包括通过火焰水解或起始玻璃材料的溶液水解形成包含SiO 2的玻璃微粒的烟灰预制件，并在至少包含SiF 4的气氛中烧结烟灰预制件以获得玻璃预制件， 没有由杂质引起的吸收增加，并且具有足够低的透光衰减。

公开(公告)号：US4979971A

公开(公告)日：1990-12-25

申请号：US472446

申请日：1990-01-29

申请人： Michihisa Kyoto ,  Minoru Watanabe ,  Hiroo Kanamori

发明人： Michihisa Kyoto ,  Minoru Watanabe ,  Hiroo Kanamori

IPC分类号： C01B33/107 ,  C03B37/014 ,  C03C13/04 ,  G02B6/00

CPC分类号： C03B37/0146 ,  C03B37/01446 ,  C03B37/01453 ,  C03B2201/12 ,  C03B2203/22 ,  Y10S65/16 ,  Y10S65/90

摘要： A method for producing a glass preform for an optical fiber is disclosed. The method comprises forming a soot preform of glass fine particles comprising SiO.sub.2 by flame hydrolysis or solution hydrolysis of a starting glass material and sintering the soot preform in an atmosphere containing at least SiF.sub.4 to obtain a glass preform which is free from an increase in absorption due to impurities and has sufficiently low attenuation of light transmission.

摘要翻译： 公开了一种用于生产用于光纤的玻璃预制棒的方法。 该方法包括通过火焰水解或起始玻璃材料的溶液水解形成包含SiO 2的玻璃细颗粒的烟灰预制件，并在至少包含SiF 4的气氛中烧结烟灰预制件以获得玻璃预成型体，其不受吸收增加的影响 并且具有足够低的光透射衰减。

公开(公告)号：US4804247A

公开(公告)日：1989-02-14

申请号：US719952

申请日：1985-04-04

申请人： Michihisa Kyoto ,  Shuzo Suzuki ,  Minoru Watanabe ,  Motohiro Nakahara

发明人： Michihisa Kyoto ,  Shuzo Suzuki ,  Minoru Watanabe ,  Motohiro Nakahara

IPC分类号： C03C13/04 ,  G02B6/00 ,  G02B6/02 ,  G02B6/10 ,  C03C25/02 ,  G02B6/16

CPC分类号： C03C13/045 ,  G02B6/02 ,  Y10S65/16

摘要： A quartz optical fiber comprising a core having a higher refractive index and made of pure quartz containing fluorine and phosphorus pentoxide and a cladding having a lower refractive index, a weight ratio of fluorine and phosphorus pentoxide in the core being larger than 1 (one), which is substantially free from unstability of the glass structure.

摘要翻译： 1.一种石英光纤，其特征在于，具有折射率较高且由含有氟和五氧化二磷的纯石英制成的芯和折射率较低的包层，所述芯中氟和五氧化二磷的重量比大于1（1） 其基本上没有玻璃结构的不稳定性。

公开(公告)号：US4902325A

公开(公告)日：1990-02-20

申请号：US928727

申请日：1986-11-10

申请人： Michihisa Kyoto ,  Minoru Watanabe ,  Shigeru Tanaka ,  Motohiro Nakahara

发明人： Michihisa Kyoto ,  Minoru Watanabe ,  Shigeru Tanaka ,  Motohiro Nakahara

IPC分类号： C03B37/14 ,  C03B8/04 ,  C03B19/14 ,  C03B20/00 ,  C03B37/014 ,  G02B6/00

CPC分类号： C03B37/0146 ,  C03B37/01446 ,  C03B2201/28 ,  C03B2201/31 ,  Y10S65/90

摘要： A method for producing a glass preform for an optical fiber comprising forming a fine glass particle mass by flame hydrolysis of a glass raw material, dehydrating the fine glass particle mass in an oxygen atmosphere containing chlorine or a chlorine-containing compound at such temperature that the soot preform is not considerably shrunk and heating the soot preform at a temperature at which the soot preform is sintered and made transparent, the glass preform produced by which method contains less hydroxyl groups, structural defects and an optical fiber fabricated from said glass preform has stable light transmission characteristics for a long time.

摘要翻译： 一种光纤用玻璃预制体的制造方法，其特征在于，通过玻璃原料的火焰水解形成微细玻璃粒子群，在含有氯或含氯化合物的氧气氛中使微细玻璃粒子物质脱水， 烟炱预制件不会显着收缩，并且在烟炱预制件被烧结和制成透明的温度下加热烟炱预制件，由该方法制备的玻璃预制件含有较少的羟基，结构缺陷和由所述玻璃预制件制成的光纤具有稳定 光传输特性长时间。

公开(公告)号：US4797143A

公开(公告)日：1989-01-10

申请号：US781182

申请日：1985-07-19

申请人： Kazunori Chida ,  Hiroshi Yokota ,  Michihisa Kyoto ,  Hisao Sato ,  Minoru Watanabe ,  Naoki Yoshioka

发明人： Kazunori Chida ,  Hiroshi Yokota ,  Michihisa Kyoto ,  Hisao Sato ,  Minoru Watanabe ,  Naoki Yoshioka

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

CPC分类号： C03B37/014 ,  C03B2203/22

摘要： An improved process for the production of optical fiber porous preforms of predetermined refractive index distribution by the vapor-phase deposition method is disclosed wherein a glass material and a dopant material are subjected to flame oxidation by the use of an oxyhydrogen burner to form fine glass particles which are deposited on one end of a supporting rod adapted to move apart from the oxyhydrogen burner while rotating to allow a rod-like porous preform to grow thereon. The improved process is characterized in that the correlation between the shape of the deposition face and the refractive index distribution is previously determined mathematically, and on a basis of the correlation therebetween, a process variable such as the distance between the porous preform and the burner is adjusted to produce the desired shape of the deposition face whereby there can be obtained an optimum refractive index distribution.

摘要翻译： 公开了通过气相沉积方法生产具有预定折射率分布的光纤多孔预型体的改进方法，其中玻璃材料和掺杂剂材料通过使用氢氧化物燃烧器进行火焰氧化以形成细玻璃颗粒 其沉积在支撑杆的一端上，其适于在旋转的同时从氧氢燃烧器移开以允许棒状多孔预型体在其上生长。 改进方法的特征在于，预先在数学上确定沉积面的形状和折射率分布之间的相关性，并且基于它们之间的相关性，诸如多孔预成型件和燃烧器之间的距离的过程变量是 调节以产生所需的沉积面形状，由此可获得最佳的折射率分布。

公开(公告)号：US4318726A

公开(公告)日：1982-03-09

申请号：US170392

申请日：1980-07-21

申请人： Takao Edahiro ,  Gotaro Tanaka ,  Toru Kuwahara ,  Michihisa Kyoto

发明人： Takao Edahiro ,  Gotaro Tanaka ,  Toru Kuwahara ,  Michihisa Kyoto

IPC分类号： C03B37/014 ,  G02B6/00 ,  C03B19/06

CPC分类号： C03B37/0142 ,  C03B37/01446 ,  C03B37/01466 ,  C03B2203/22 ,  C03B2203/26 ,  C03B2207/06 ,  C03B2207/20 ,  C03B2207/32

摘要： A process for producing an optical fiber preform which comprises forming a particulate glass rod in which the dopant concentration gradually increases toward the center of its cross section, and gradually heating the rod starting at a temperature below the minimum collapsing point of the fine glass particles in the center of the rod in such a manner that the softening of the rod proceeds from the center outward, to thereby produce a transparent glass rod.

摘要翻译： 一种光纤预制棒的制造方法，其特征在于，包括形成粒子状玻璃棒，其中掺杂剂浓度朝向其横截面的中心逐渐增加，并且在低于玻璃微粒的最小塌陷点的温度下逐渐加热棒 棒的中心以使得杆的软化从中心向外进行，从而产生透明的玻璃棒。

公开(公告)号：US5306322A

公开(公告)日：1994-04-26

申请号：US924767

申请日：1992-07-24

申请人： Shinji Ishikawa ,  Yuichi Ohga ,  Ichiro Tsuchiya ,  Hiroo Kanamori ,  Hiroshi Yokota ,  Michihisa Kyoto

发明人： Shinji Ishikawa ,  Yuichi Ohga ,  Ichiro Tsuchiya ,  Hiroo Kanamori ,  Hiroshi Yokota ,  Michihisa Kyoto

IPC分类号： G02B6/00 ,  C03B37/014 ,  C03B37/023

CPC分类号： C03B37/01446 ,  C03B37/0146 ,  C03B2201/07 ,  C03B2201/075 ,  C03B2201/12 ,  Y10S65/16 ,  Y10S65/90

摘要： The present invention providesa process for the dehydrating and purifying treatment by heating a porous glass preform for an optical fiber comprising passing the porous glass preform through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere comprising an inert gas and a silicon halogenide gas;a process for the fluorine-doping treatment by heating a porous glass preform for an optical fiber comprising passing a porous glass preform through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere comprising a fluorine compound gas and an inert gas; anda process for the vitrifying treatment by heating a porous glass preform for an optical fiber comprising passing the preform, which has been previously dehydrated and purified, through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere gas.

摘要翻译： 本发明提供了一种通过加热用于光纤的多孔玻璃预制件进行脱水和净化处理的方法，包括使多孔玻璃预制件通过具有SiC层的马弗管至少在其内表面上在高温下在包括 惰性气体和卤化硅气体; 通过加热用于光纤的多孔玻璃预制件进行氟掺杂处理的方法，包括使多孔玻璃预制件通过具有SiC层的马弗管至少在其内表面上在高温下在包含氟化合物气体 和惰性气体; 以及通过加热用于光纤的多孔玻璃预制件进行玻璃化处理的方法，包括使预先脱水和净化的预成型体至少在其内表面上通过具有SiC层的马弗管在高温下 气氛气体。