公开(公告)号：US4900894A

公开(公告)日：1990-02-13

申请号：US296778

申请日：1989-01-13

申请人： Gotaro Tanaka ,  Hiroshi Suganuma ,  Akira Urano ,  Masahiro Takagi ,  Shunichi Mizuno

发明人： Gotaro Tanaka ,  Hiroshi Suganuma ,  Akira Urano ,  Masahiro Takagi ,  Shunichi Mizuno

IPC分类号： C03B20/00 ,  C03B23/043 ,  C03B37/018 ,  H05H1/46

CPC分类号： H01J37/32192 ,  C03B23/043 ,  C03B37/01876 ,  H05H1/46 ,  H01J2237/336

摘要： A method of heating a quartz glass tube with microwaves, which method comprises supplying a gas for plasma generation in the quartz glass tube, applying microwaves to the quartz glass tube so as to generate a hot plasma in the quartz glass tube and to preheat the quartz glass tube, and then discontinuing the supply of the gas for plasma generation while applying the microwaves, whereby the quartz glass tube absorbs the microwaves to heat the quartz glass tube to a sufficient temperature in a very quick and clear manner.

公开(公告)号：US4793842A

公开(公告)日：1988-12-27

申请号：US139141

申请日：1987-12-21

申请人： Hiroshi Yokota ,  Hiroo Kanamori ,  Gotaro Tanaka ,  Hiroshi Suganuma ,  Toshio Danzuka

发明人： Hiroshi Yokota ,  Hiroo Kanamori ,  Gotaro Tanaka ,  Hiroshi Suganuma ,  Toshio Danzuka

IPC分类号： G02B6/00 ,  C03B20/00 ,  C03B37/012 ,  C03B37/025 ,  G02B6/02 ,  C03B37/014 ,  C03B37/027

CPC分类号： C03B37/01211 ,  Y02P40/57 ,  Y10S65/16 ,  Y10S65/90

摘要： A rod-in-tube method for producing a glass preform for use in the fabrication of an optical fiber, which comprises steps of inserting a glass rod constituting a core material in a glass tube constituting a cladding material, heating the rod-tube composite by an outer heating source with introducing, in the gap between the rod and the tube, a gaseous mixture containing a silicon halogenide, a fluorine-containing compound and oxygen gas in which a ratio of silicon and fluorine (Si/F) is larger than 1/300 and smaller than 1/5, and heating and fusing the composite at a temperature not lower than 1,900.degree. C. with filling the gap by a gaseous mixture comprising a halogen-containing compound and oxygen gas; from which glass preform, an optical fiber with low attenuation of light transmission, particularly in a long wavelength range, is fabricated.

摘要翻译： 一种用于制造用于制造光纤的玻璃预制棒的棒管式方法，包括以下步骤：将构成芯材的玻璃棒插入构成包层材料的玻璃管中，通过以下步骤加热棒管复合物： 外部加热源，其在棒和管之间的间隙中引入含有硅和氟（Si / F）比大于1的硅卤化物，含氟化合物和氧气的气体混合物 / 300且小于1/5，并且在不低于1900℃的温度下加热和熔合复合材料，通过包含含卤化合物和氧气的气体混合物填充间隙; 制造玻璃预制件，具有低透光衰减的光纤，特别是在长波长范围内。

公开(公告)号：US4737179A

公开(公告)日：1988-04-12

申请号：US893084

申请日：1986-08-04

申请人： Gotaro Tanaka ,  Hiroshi Yokota ,  Shigeru Tanaka ,  Hiroo Kanamori ,  Hiroshi Suganuma

发明人： Gotaro Tanaka ,  Hiroshi Yokota ,  Shigeru Tanaka ,  Hiroo Kanamori ,  Hiroshi Suganuma

IPC分类号： G02B6/00 ,  C03B20/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018

CPC分类号： G02B6/03644 ,  C03B37/01211 ,  C03B37/01228 ,  C03B37/01231 ,  C03B37/01248 ,  C03B37/014 ,  C03B37/01466 ,  G02B6/03666 ,  C03B2203/22 ,  C03B2203/36 ,  G02B6/02276

摘要： A method for producing a glass preform for use in fabrication of an optical fiber, which comprises steps of forming a cylindrical rod of glass having a refractive index distribution with axial symmetry around the rod axis by an VAD method, stretching the rod glass to decrease its diameter, inserting the stretched rod in a glass tube having a refractive index distribution with axial symmetry around the tube axis and heating and melting a complex of the stretched rod and the tube to integrate them from the glass preform produced by the method, an optical fiber having precisely controlled refractive index distribution can be fabricated.

摘要翻译： 一种制造用于制造光纤的玻璃预制棒的方法，包括以下步骤：通过VAD法形成具有围绕杆轴的轴向对称折射率分布的圆柱形棒，拉伸棒玻璃以减少其 将拉伸棒插入具有围绕管轴线的轴向对称折射率分布的玻璃管中，并加热并熔化拉伸棒和管的复合物，以将它们与由该方法制备的玻璃预制件相结合，将光纤 可以制造精确控制的折射率分布。

公开(公告)号：US4693738A

公开(公告)日：1987-09-15

申请号：US781636

申请日：1985-09-30

申请人： Masao Hoshikawa ,  Michihisa Kyoto ,  Koji Yano ,  Gotaro Tanaka

发明人： Masao Hoshikawa ,  Michihisa Kyoto ,  Koji Yano ,  Gotaro Tanaka

IPC分类号： C03C13/04 ,  C03B37/014 ,  C03B37/12 ,  C03B37/14 ,  G02B6/00

CPC分类号： C03B37/01446 ,  C03B37/0146 ,  C03B2201/12 ,  C03B2203/22 ,  C03B2203/26 ,  Y02P40/57 ,  Y10S65/16

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。

公开(公告)号：US5055121A

公开(公告)日：1991-10-08

申请号：US560024

申请日：1990-07-27

申请人： Hiroo Kanamori ,  Yoichi Ishiguro ,  Gotaro Tanaka

发明人： Hiroo Kanamori ,  Yoichi Ishiguro ,  Gotaro Tanaka

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

CPC分类号： C03B37/01493 ,  C03B37/0142 ,  C03B37/01446 ,  C03B2201/12 ,  C03B2203/22 ,  C03B2207/50 ,  C03B2207/54 ,  C03B2207/60 ,  Y10S65/16 ,  Y10S65/90

摘要： An optical fiberglass preform having fluorine selectively added to its cladding is produced by:depositing soot of quartz glass on a pipe from starting member by using burners for synthesizing glass soot to form a porous glass preform consisting of a core porous glass body a peripheral portion of which has a larger bulk density than the other portion and a cladding porous glass body,heating said porous glass preform in a dehydration atmosphere while supplying dehydration gas through the pipe form starting member andheating and vitrifying the dehydrated porous glass preform in an atmosphere containing a fluorine-containing compound.

公开(公告)号：US5035484A

公开(公告)日：1991-07-30

申请号：US452823

申请日：1989-12-21

申请人： Yoichi Ishiguro ,  Masaharu Ooe ,  Kohei Kobayashi ,  Gotaro Tanaka ,  Minoru Watanabe

发明人： Yoichi Ishiguro ,  Masaharu Ooe ,  Kohei Kobayashi ,  Gotaro Tanaka ,  Minoru Watanabe

IPC分类号： C03C25/10 ,  C03C25/22

CPC分类号： C03C25/223 ,  C03C25/1075 ,  Y10T428/12444

摘要： A surface of an optical fiber is coated by a method for coating a surface of an optical fiber with carbon comprising steps of introducing an optical fiber in a reaction chamber containing a coating raw material comprising carbon, hydrogen and halogen atoms and depositing on the surface of the optical fiber a carbon layer formed from the raw material by chemical vapor deposition, whereby the coated optical fiber has improved initial tensile strength and absorbs less hydrogen.

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：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：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：US4406680A

公开(公告)日：1983-09-27

申请号：US344583

申请日：1982-02-01

申请人： Takao Edahiro ,  Gotaro Tanaka ,  Toru Kuwahara ,  Masaaki Yoshida

发明人： Takao Edahiro ,  Gotaro Tanaka ,  Toru Kuwahara ,  Masaaki Yoshida

IPC分类号： C03B37/018 ,  C03B8/04 ,  C03B20/00 ,  C03B37/014 ,  C23C16/40 ,  G02B6/00 ,  C03B19/06

CPC分类号： C03B37/0142 ,  C23C16/401 ,  C03B2207/06 ,  C03B2207/20 ,  C03B2207/36

摘要： A process for producing high-purity silica glass wherein glass-forming chlorides, hydrogen gas, oxygen and an inert gas are supplied from a glass burner, the chlorides are decomposed by flame oxidation to form fine grains of glass which are deposited on a starting member and the glass deposit is sintered to provide a transparent vitreous substance, the volume ratio of oxygen gas to the sum of the chlorides and hydrogen gas being greater than about 0.6, preferably greater than about 1.0, and less than about 20.

摘要翻译： 由玻璃燃烧器供给形成玻璃的氯化物，氢气，氧气和惰性气体的高纯度二氧化硅玻璃的方法，通过火焰氧化分解氯化物，形成微小的玻璃晶粒，沉积在起始构件上 并且玻璃沉积物被烧结以提供透明的玻璃质物质，氧气与氯化物和氢气之和的体积比大于约0.6，优选大于约1.0且小于约20。