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：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：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：US4915717A

公开(公告)日：1990-04-10

申请号：US577405

申请日：1984-02-06

申请人： Minoru Watanabe ,  Naoki Yoshioka ,  Hiroo Kanamori ,  Nobuo Inagaki

发明人： Minoru Watanabe ,  Naoki Yoshioka ,  Hiroo Kanamori ,  Nobuo Inagaki

IPC分类号： C03B37/014

CPC分类号： C03B37/0142 ,  C03B2207/04 ,  C03B2207/10 ,  C03B2207/16 ,  C03B2207/20 ,  C03B2207/22 ,  C03B2207/26 ,  C03B2207/36 ,  C03B2207/50

摘要： An improved method for fabricating an optical fiber preform by the vapor phase axial deposition (VAD) method, comprises forming core and cladding soots at the same time by the use of core and cladding burners. The improvement is that the cladding burner is designed so that at least one of the outlets for a feed material gas, a fuel gas, an auxiliary fuel gas, and an inert gas is composed of a plurality of openings. In this improved method, the temperature distribution from the boundary of the core soot to the periphery of the cladding soot is made smooth, and thus the cladding soot is prevented from cracking.

摘要翻译： 通过气相轴向沉积（VAD）方法制造光纤预制件的改进方法包括通过使用芯和包层燃烧器同时形成芯和包覆烟灰。 改进之处在于，包层燃烧器被设计成使得用于进料材料气体，燃料气体，辅助燃料气体和惰性气体的出口中的至少一个由多个开口组成。 在这种改进的方法中，从核心烟灰的边界到包层烟灰的周边的温度分布变得平滑，因此防止了包层烟灰的破裂。

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：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：US4804393A

公开(公告)日：1989-02-14

申请号：US97320

申请日：1987-09-11

申请人： Koji Yano ,  Minoru Watanabe ,  Michihisa Kyoto ,  Masao Hoshikawa

发明人： Koji Yano ,  Minoru Watanabe ,  Michihisa Kyoto ,  Masao Hoshikawa

IPC分类号： C03B37/018 ,  C03B37/014 ,  C03B37/12 ,  G02B6/00

CPC分类号： C03B37/01446 ,  C03B37/01413 ,  C03B2201/28 ,  C03B2201/31

摘要： A method for producing an optical fiber preform comprising jetting a glass raw material mixture containing at least one phosphorous compound and a fuel gas through a burner, hydrolyzing the raw materials in the flame to form fine glass particles, depositing the fine glass particles to form a porous glass preform, and then sintering the porous glass preform in a stream of an inert gas with removing phosphorus liberated from the preform to produce a transparent optical fiber preform, from which transparent optical fiber preform, an optical fiber having low attenuation at a wavelength of about 1.52 micrometer is produced.

摘要翻译： 一种光纤预制棒的制造方法，其特征在于，包括通过燃烧器喷射含有至少一种磷化合物和燃料气体的玻璃原料混合物，水解火焰中的原料，形成微细的玻璃粒子，沉积微细玻璃粒子，形成 多孔玻璃预制件，然后在惰性气体流中烧结多孔玻璃预制件，除去从预成型体释放出的磷，以制造透明光纤预制件，透明光纤预制件，其波长为低衰减的光纤 产生约1.52微米。

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：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。