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31. 发明专利

JPS59174537A Manufacture of base material for optical fiber 失效
标题翻译：光纤基材的制造
公开(公告)号：JPS59174537A
公开(公告)日：1984-10-03
申请号：JP4857683
申请日：1983-03-23
申请人： Hitachi Cable Ltd
发明人： OKANO HIROAKI , TOKUNAGA TOSHIHIDE
IPC分类号： C03B37/018 , C03B8/04 , C03B37/014 , G02B6/00
CPC分类号： C03B37/0142 , C03B37/01446 , C03B2207/06 , C03B2207/20 , C03B2207/22 , C03B2207/60 , C03B2207/70
摘要： PURPOSE:To manufacture efficiently a base material for an optical fiber having a clad by the VAD method by using a triply tubed burner and shifting the center of the burner from the center of a quartz rod target by a specified distance. CONSTITUTION:A triply tubed burner 1 is uprighted, and the center of the buner 1 is shifted by 1-4mm. from the center of the bottom of an uprighted quartz rod target 20 on which oxide particles are deposited by blowing a flame 25 from the burner 1. A gaseous mixture consisting of SiCl4, GeCl4, Ar and H2 is fed to the central tube of the burner 1, Ar is fed to the outer tube, and O2 is fed to the outermost tube. The gases are burned, and the resulting flame 25 is blown on the target 20 to deposit oxide particles. A porous base material 10 is formed by the deposition and it is vitrified by heating to obtain a base material for an optical fiber having a clad part.
摘要翻译：目的：通过使用三重串联燃烧器，通过VAD方法有效地制造具有包层的光纤的基材，并将石英棒靶的中心从燃烧器的中心移位指定的距离。构成：将三重管状燃烧器1竖立起来，并且组合机1的中心偏移1-4mm。从直立的石英棒靶20的底部的中心，通过从燃烧器1吹入火焰25，沉积氧化物颗粒。将由SiCl 4，GeCl 4，Ar和H 2组成的气体混合物供给到燃烧器的中心管如图1所示，Ar被供给到外管，并且将O 2供给到最外管。气体被燃烧，并将所得的火焰25吹到靶20上以沉积氧化物颗粒。通过沉积形成多孔基材10，通过加热玻璃化，得到具有包层部的光纤的基材。

32. 发明专利

JPS59152236A Preparation of leaky guide 失效
标题翻译：漏洞指南的准备
公开(公告)号：JPS59152236A
公开(公告)日：1984-08-30
申请号：JP2342083
申请日：1983-02-15
申请人： Hitachi Cable Ltd
发明人： NAKAI HISANORI , TOKUNAGA TOSHIHIDE , TERAOKA TATSUO
IPC分类号： C03B37/01 , C03B8/04 , C03B20/00 , C03B37/018 , G02B6/00
CPC分类号： C03B37/01861 , C03B2203/16
摘要： PURPOSE:To obtain a leaky guide having pipe thickness of high precision, by depositing the first layer of doped silica on the inner side of a starting quartz pipe, piling the second layer of pure quartz on it, subjecting the piled pipe to HF treatment so that the starting quartz pipe and the first layer are removed, drawing the second layer. CONSTITUTION:The doped silica 2 as the first layer is deposited on the inner side of the starting quartz pipe 1 by MCVD method, and the pure quartz 3 as the second layer is piled on the inner side of it. The piled pipe is subjected to HF treatment so that the starting quartz pipe 1 and the doped silica 2 are removed, and the pipe consisting of the remaining pure quartz of the second layer is drawn to prepare a leaky guide. Pipe thickness of the deposited pure quartz 3 has high precision in the lengthwise direction, and the pipe is drawn to give a leaky guide having pipe thickness of high precision.
摘要翻译：目的：为了获得具有高精度管道的泄漏导向器，通过在起始石英管的内侧沉积第一层掺杂二氧化硅，在其上堆积第二层纯石英，对堆管进行HF处理，除去起始石英管和第一层，拉出第二层。构成：作为第一层的掺杂二氧化硅2通过MCVD法沉积在起始石英管1的内侧，作为第二层的纯石英3堆积在其内侧。对堆管进行HF处理，除去起始石英管1和掺杂二氧化硅2，并且将由第二层的剩余的纯石英组成的管被拉制以制备泄漏导向件。沉积的纯石英3的管道厚度在长度方向上具有高精度，并且拉制管道以给出具有高精度的管道厚度的泄漏导向件。

33. 发明专利

JPS59142502A Polarizing surface maintaining optical fiber 失效
标题翻译：极化表面维护光纤
公开(公告)号：JPS59142502A
公开(公告)日：1984-08-15
申请号：JP1660783
申请日：1983-02-03
申请人： Hitachi Cable Ltd
发明人： TOKUNAGA TOSHIHIDE
IPC分类号： C03C3/04 , C03B37/012 , C03C3/06 , C03C3/097 , C03C3/16 , C03C13/00 , C03C13/04 , G02B6/024
摘要： PURPOSE:To obtain a polarizing surface maintaining optical fiber which can be manufactured stably and whose characteristic is excellent by setting the second clad of an optical fiber for maintaining a polarizing surface of a four-layer structure to a prescribed component rate and a prescribed refractive index. CONSTITUTION:A core 1 contains SiO2 and a dopant for raising a refractive index, for instance, GeO2. A shape breakdown of the core 1 is prevented by cutting the influence of B2O3 contained in the second clad 3 by the first clad 2 of SiO2 of high purity. The rate of P2O5 of the clad 3 is 3-10mol% and the rate of B2O3 is 2.5-8mol%. The third clad 4 is a guartz glass which contains no dopant. The refractive index distribution is adjusted so that the core 1 is the highest, the clads 2, 4 are almost equal, and the clad 3 is lower than the core 1 and higher than the clad 2. P2O5 of the clad 3 is a little more than B2O3, and the total quantity of both of them is 5.5-18mol%, and in case of =18, the viscosity becomes low.
摘要翻译：目的：为了获得能够稳定制造并且通过将用于将四层结构的偏振面维持在预定分量率和规定折射率的光纤的第二包层而获得的特性优异的偏光面保持光纤。构成：芯1含有SiO 2和用于提高折射率的掺杂剂，例如GeO 2。通过用高纯度的SiO 2的第一包层2切断第二包层3中含有的B2O3的影响，防止了芯体1的形状分解。包层3的P2O5的比率为3-10mol％，B2O3的比例为2.5-8mol％。第三包层4是不含掺杂剂的石英玻璃。调整折射率分布，使得芯1最高，包层2,4几乎相等，并且包层3比芯1低并且高于包层2.包层3的P2O5多一点而且两者的总量为5.5〜18摩尔％，在<= 5.5的情况下，粘度高，难以转换为规定的椭圆形状，在≥18时，粘度变为低。

34. 发明专利

JPS5968709A Production of image guide 失效
标题翻译：制作图像指南
公开(公告)号：JPS5968709A
公开(公告)日：1984-04-18
申请号：JP17921282
申请日：1982-10-13
申请人： Hitachi Cable Ltd
发明人： TERAOKA TATSUO , ABE KOUICHI , SAEKI MASAHIKO , TOKUNAGA TOSHIHIDE
IPC分类号： G02B6/04 , G02B6/06 , G02B5/17
CPC分类号： G02B6/06
摘要： PURPOSE:To obtain an image guide which is free from intrusion of foam over a long length and permits excellent transmission of an image by melt sticking and spinning an optical fiber bundle by heating in a gaseous atmosphere of He having a small atomic radius. CONSTITUTION:An optical fiber bundle 2 is fed from the upper to lower part of a furnace core tube 3, and gaseous He is flowed from the upper to lower part of the tube 3 as shown by an arrow. The fiber bundle is melt stuck and spun by heating with a heater 5 provided along the tube 3 in an optical fiber drawing furnace 4. Helium has an atomic radius smaller than conventional gaseous N2 and Ar, and it is extremely smaller as compared to the network structure of the glass constituting optical fibers 1; therefore He has substantiall fluidity in a melt stuck part 7 and when the fibers 1 are melt stuck, the spacing 6 between the fibers 1 is thoroughly eliminated. An image guide which enables the excellent transmission of an image over a long length without forming foam is thus obtd.
摘要翻译：目的：为了获得长度不受泡沫侵入的图像引导件，通过在具有小原子半径的He的气体气氛中加热熔融粘附和纺丝光纤束，可以很好地传输图像。构成：将光纤束2从炉芯管3的上部向下方供给，如箭头所示，气体He从管3的上部向下部流动。纤维束通过在光纤拉丝炉4中沿着管3设置的加热器5加热而熔融粘合和纺丝。氦原子半径比常规气态N 2和Ar小，并且与网络相比极小构成光纤1的玻璃的结构; 因此，在熔融粘贴部7中，流动性大，纤维1熔融粘合时，纤维1间的间隔6被彻底消除。因此，能够在不形成泡沫的情况下能够实现长时间的图像的良好透射的图像引导件。

35. 发明专利

JPS5950040A Production of optical fiber for retaining plane of polarization 失效
标题翻译：生产用于保持极化平面的光纤
公开(公告)号：JPS5950040A
公开(公告)日：1984-03-22
申请号：JP16151082
申请日：1982-09-16
申请人： Hitachi Cable Ltd
发明人： ISHIBASHI YOSHIO , TOKUNAGA TOSHIHIDE
IPC分类号： C03B37/018 , C03B37/014 , G02B6/00
CPC分类号： C03B37/0142 , C03B2203/30 , C03B2207/50
摘要： PURPOSE:To produce a titled fiber having stable performance with good reproducibility by disposing >=4 pieces of oxyhydrogen burners which rotate at the same period on the outside periphery of a glass, rod, feeding gaseous SiCl4 to the burners and adding gaseous GeCl4 and BBr3 to >=2 pieces of the burners. CONSTITUTION:Oxyhydrogen burners 2, 3 which rotate at the same period as the period of a quartz glass rod 1 consisting of a core are disposed around the rod 1, and gaseous SiCl4 is fed to the burners 2, 3 to deposit fine particles of SiO2 on the outside circumferential surface of the rod 1 by flame hydrolysis reaction. GeCl4 and BBr3 are added and the mixture thereof is fed to >=2 pieces of the burners 3 placed to face to each other to deposit GeO and B2O3 together with SiO2 on the outside circumferential surface of the rod 1. A porous blank material of a circular preform consisting of the layer deposited with pure quartz and the doped quartz layer is thus formed. Such blank material is heated to about 1,600 deg.C to vitrify the deposited layer thereby forming a transparent base material. Said base material is further drawn and spun at about >= 2,000 deg.C, whereby the optical fiber of a single mode for retaining the plane of polarization is obtd.
摘要翻译：目的：为了生产具有良好重现性的标准纤维，具有良好的再现性，通过在玻璃棒的外周处设置相同时间旋转的4个氢氧燃烧器，将气态SiCl 4供给到燃烧器中并加入气态GeCl4和BBr3 到> = 2个燃烧器。构成：与由核心组成的石英玻璃棒1的周期相同的周期旋转的氧氢燃烧器2,3设置在杆1的周围，气态SiCl 4供给到燃烧器2,3，以沉积SiO 2的微粒通过火焰水解反应在杆1的外周面上。加入GeCl 4和BBr 3，将它们的混合物供入到= = 2个彼此相对放置的燃烧器3中，以将GeO和B2O3与SiO 2一起沉积在棒1的外圆周表面上。多孔坯料因此形成由沉积有纯石英的层和掺杂的石英层组成的圆形预制件。将这种坯料加热至约1600℃以使沉积层玻璃化，从而形成透明基材。所述基材进一步在约> = 2,000℃下拉伸和纺丝，由此可以获得用于保持极化平面的单一模式的光纤。

36. 发明专利

JPS58219502A Optical fiber of constant polarization type 失效
标题翻译：永久偏光型光纤
公开(公告)号：JPS58219502A
公开(公告)日：1983-12-21
申请号：JP10278582
申请日：1982-06-15
申请人： Hitachi Cable Ltd
发明人： TOKUNAGA TOSHIHIDE , KATOU MASAAKI
IPC分类号： C03B37/012 , C03C3/097 , C03C13/04 , G02B6/024 , G02B6/10
CPC分类号： G02B6/105 , C03C13/046
摘要： PURPOSE:To obtain a fiber of a constant polarization type which has a low loss, is easy to manufacture and has high reproducibility, by disposing successively the 1st clad of a concentrial circular shape, the 2nd clad of an elliptic sectional shape and the 3rd clad of a concentrical circular shape each having prescribed compsn. on the outside of a glass core. CONSTITUTION:The 1st clad 22 of a circular section consisting of high-purity SiO2 is formed on the outside of a core 21 consisting of SiO2+GeO2 and the 2nd clad 23 of an elliptic sectional shape consisting of SiO2+P2O5+B2O3 is provided thereon. A glass tube 24 of a circular section consisting essentially of SiO2 is provided on the outside thereof. The temp. in the stage of forming a glass film consisting of an elliptic clad on the inside surface of a quartz tube which is a starting material in such an optical fiber of constant polarization is relatively low; therefore, the diffusion of OH from the quartz tube to the inside is small and since the 1st clad 22 does not contain B, the fiber which decreases transmission loss, is easy to produce and has high reproducibility is obtd.
摘要翻译：目的：为了获得具有低损耗，易于制造和重现性高的恒定极化型光纤，通过连续设置中心圆形的第一包层，椭圆形截面形状的第二包层和第三包层每个都有规定的同心圆形。在玻璃核心的外面。构成：在由SiO 2 + GeO 2构成的芯21的外侧形成由高纯度SiO 2构成的圆形部分的第一包层22，并且在其上设置由SiO 2 + P 2 O 5 + B 2 O 3组成的椭圆形截面形状的第二包层23 。在其外侧设置有由SiO 2组成的圆形截面的玻璃管24。温度在由这种恒定极化的光纤中的起始材料的石英管的内表面上形成由椭圆形包层构成的玻璃膜的阶段相对较低; 因此，OH从石英管扩散到内部是小的，并且由于第一包层22不含有B，因此容易产生降低传输损耗的纤维，并且具有高的再现性。

37. 发明专利

JPS58205112A Production of image guide 失效
标题翻译：制作图像指南
公开(公告)号：JPS58205112A
公开(公告)日：1983-11-30
申请号：JP8771982
申请日：1982-05-24
申请人： Hitachi Cable Ltd
发明人： NIIZAWA MASAHARU , TOKUNAGA TOSHIHIDE , OOHASHI SEISHIROU , HASHIMOTO YUUJIROU
IPC分类号： G02B6/04 , G02B6/06
CPC分类号： G02B6/06
摘要： PURPOSE:To form a base material for an image guide having high quality with good efficiency and to improve the production efficiency of the image guide by casting a sol-like clad material and a core material into a specific vessel and gelling both materials then heating the same to make the materials transparent. CONSTITUTION:Plural pieces of square partition boxes 3 are arrayed at proper intervals in a vessel 1, and a clad material 4 which is made into sol is cast onto the outside of said boxes, whereafter the material is left standing for 24hr at 50 deg.C so as to gel. A core material 2 which is made into sol is put in the boxes and is allowed to gel in the similar way. When the boxes 3 are removed, the gelled clad material layer 5 contg. plural pieces of the gelled core materials 6 is obtained. After the assemblage is heated for about 2hr at 200 deg.C and is dehydrated, the same is heated to 100 deg.C in gaseous He, whereby a base material for an image guide is obtd. The material 2 and the material 4 consist of tetramethoxysilane and respectively mixed solns. fo tetramethoxygermanium and trimethoxyboron. The base material for the image guide is thus formed efficiently.
摘要翻译：目的：通过将溶胶状复合材料和芯材浇铸到特定的容器中并凝胶化两种材料，形成用于高质量，高效率的图像引导器的基材并且提高图像引导件的生产效率，然后加热同样使材料透明。构成：多个方形分隔箱3以适当的间隔排列在容器1中，并且制成溶胶的复合材料4流延到所述箱体的外侧，之后将材料在50度下静置24小时。 C凝胶。将制成溶胶的芯材2放入箱中并以类似的方式凝胶化。当箱3被移除时，凝胶包层材料层5 获得多个胶凝芯材6。将组合物在200℃加热约2小时并脱水后，在气态He中将其加热至100℃，由此可以获得用于图像引导的基材。材料2和材料4由四甲氧基硅烷和分别混合的溶胶组成。四甲氧基锗和三甲氧基硼。因此，有效地形成图像引导件的基材。

38. 发明专利

JPS58161932A MANUFACTURE OF BASE MATERIAL FOR OPTICAL FIBER RETAINING POLARIZING SURFACE 失效
公开(公告)号：JPS58161932A
公开(公告)日：1983-09-26
申请号：JP4154582
申请日：1982-03-16
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , KAJIOKA HIROSHI , UETSUKA NAOTO
IPC分类号： C03B8/02 , C03B37/012 , C03B37/016 , G02B6/00 , G02B6/024
摘要： PURPOSE:To manufacture the titled base material providing satisfactory polarizing characteristics, enabling the control of them, and having superior mass productivity, by obtaining a transparent glass body from a cylindrical container for a jacket contg. a porous base material for an elliptical clad having a porous base material for a core at the center. CONSTITUTION:A cylindrical quartz container 4 is filled with a core soln. 5 contg. Si(OCH3)4, H2O and CH3OH or Si (OC2H5)4, H2O and C2H5OH, and the container 4 is put in an oven 7 and heated to convert the soln. 5 into gel. The gel is taken out of the container 4 to obtain a porous base material for a core. An elliptical container 9 is filled with a clad soln. 8 contg. a dopant so as to make the refractive index lower than that of the material 6, the material 6 is placed at the center of the container 9, and by similarly carrying out heat treatment, a porous base material 10 for an elliptical clad is obtd. A cylindrical container 14 is filled with a jacket soln. 11 having the same composition as the core soln. 5, the material 10 is placed at the center of the container 14, and by similarly carrying out heat treatment, a porous base material 13 is obtd. The material 13 is dried and sintered in an electric furnace 16 to manufacture a base material 15 for an optical fiber retaining the polarizing surface.

39. 发明专利

JPS58120534A CONSTANT POLARIZATION TYPE OPTICAL FIBER AND ITS PRODUCTION 失效
公开(公告)号：JPS58120534A
公开(公告)日：1983-07-18
申请号：JP68282
申请日：1982-01-06
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , NAKAGAWA JIYUNKICHI , KAJIOKA HIROSHI
IPC分类号： C03C3/06 , C03C3/076 , C03C3/097 , C03C13/00 , C03C13/04 , G02B6/02 , G02B6/024
摘要： PURPOSE:To produce a titled optical fiber of low loss by forming a clad consisting of specific glass having an elliptical section on the outside circumference of a core having a circular section and an outer clad having a circular section. CONSTITUTION:A glass film 43 that forms an elliptical clad 22 consisting of SiO2+P2O5B2O3 contg. 5-20mol% P2O5 and B2O3 in total and the balance SiO2 is formed on the inside surface of a transparent quartz glass tube 44, and further a high purity glass film to form a circular core 21 is attached on the inside surface thereof. One end of such glass tube 54 is sealed and the inside of the tube 54 is evacuated through the other end with an evacuating device 57 to 0.5-15mm. H2O. While the tube is heated with an oxyhydrogen burner 46, the burner 46 is moved to make the tube 64 solid; thereafter, the solid tube is drawn under heating, whereby the constant polarization type optical fiber having the elliptical clad 22 and the circular outer clad 23 on the outside circumference of the circular core 21 is obtained.

40. 发明专利

JPS58118604A PRODUCTION OF IMAGE GUIDE 失效
公开(公告)号：JPS58118604A
公开(公告)日：1983-07-14
申请号：JP114982
申请日：1982-01-07
申请人： HITACHI CABLE
发明人： TOKUNAGA TOSHIHIDE , NAKAI HISANORI , TAKASHIMA HIDEYUKI , TERAOKA TATSUO
IPC分类号： G02B6/04 , C03B37/028
摘要： PURPOSE:To maintain positive pressure constant with respect to a method for production of an image guide wherein many preforms are inserted into a protecting tube and are drawn under heating in a heating furnace by feeding a gas into the protecting tube. CONSTITUTION:In a method for production of an image guide 6 wherein many preforms 1 are inserted into a protecting tube 2 and are drawn with feed rolls 7 under heating with a heating furnace 5, a gas is introduced through a gas introducing pipe 3 into the tube 2, and while the gas is released through a gas releasing nozzle 8, the inside of the tube 2 is maintained under specified positive pressure. The positive pressure is the pressure slightly lower than the force that the tube 2 is heated to melt with the furnace 5 and shrinks by surface tension, and is

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