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1. 发明授权

US4525027A Single mode optical fibers 失效
标题翻译：单模光纤
公开(公告)号：US4525027A
公开(公告)日：1985-06-25
申请号：US648334
申请日：1984-09-05
申请人： Katsunari Okamoto , Takao Edahiro , Akio Kawana , Tetsuo Miya
发明人： Katsunari Okamoto , Takao Edahiro , Akio Kawana , Tetsuo Miya
IPC分类号： G02B6/00 , G02B6/02 , G02B6/10 , G02B5/172
CPC分类号： G02B6/02238
摘要： In a single mode optical fiber comprising a core made of glass and a cladding surrounding the core and made of glass, when a difference .DELTA. between refractive indices n.sub.1 and n.sub.2 of the core and cladding is expressed by (n.sub.1 -n.sub.2)/(n.sub.1).times.100%, the refractive indices n.sub.1 and n.sub.2 are determined to satisfy a relation 1.0
摘要翻译：在由（n1-n2）/（n1）表示由芯和由包层围成的由玻璃制成的芯的单模光纤中，当芯和包层的折射率n1和n2之间的差DELTA表示为（n1-n2）/（n1） x100％，折射率n1和n2被确定为满足1.0

2. 发明授权

US4318726A Process for producing optical fiber preform 失效
标题翻译：生产光纤预制棒的工艺
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。

3. 发明授权

US3950073A Eccentric core optical waveguide 失效
标题翻译： ECCENTRIC核心光波导
公开(公告)号：US3950073A
公开(公告)日：1976-04-13
申请号：US472758
申请日：1974-05-23
申请人： Masaharu Horiguchi , Takao Edahiro , Kunio Masuno , Tadashi Miyashita , Shiro Takahashi
发明人： Masaharu Horiguchi , Takao Edahiro , Kunio Masuno , Tadashi Miyashita , Shiro Takahashi
IPC分类号： G02B6/00 , C03B37/027 , C03C13/04 , G02B6/02 , G02B6/032 , G02B6/04 , G02B6/44 , G02B5/14
CPC分类号： G02B6/032 , C03B37/027 , C03C13/04 , C03C13/045 , C03C13/046 , G02B6/04 , G02B6/4402 , C03B2203/10 , C03B2203/14 , C03B2203/32 , C03B2203/34
摘要： An eccentric core optical waveguide comprising at least one glass core having relatively large refraction index disposed in an outer cylindrical glass jacket having larger diameter than that of the glass core and relatively small refraction index. The one or more glass core being so arranged as to made tangential contact with the inner wall of the glass jacket or a dielectric thin film coated inside the jacket at a small area. The space between the glass core and the outer glass jacket or said thin film is filled by air.

4. 发明授权

US4528010A Process for producing optical glass product 失效
标题翻译：光学玻璃制品生产工艺
公开(公告)号：US4528010A
公开(公告)日：1985-07-09
申请号：US584968
申请日：1984-02-29
申请人： Takao Edahiro , Nobuo Inagaki , Shiro Kurosaki
发明人： Takao Edahiro , Nobuo Inagaki , Shiro Kurosaki
IPC分类号： C01B33/187 , C03B8/02 , C03B37/016 , C03C3/04 , C03C3/06 , C03C23/00 , G02B6/00 , C03B19/06
CPC分类号： C03C23/008 , C03B37/016 , C03C3/06 , C03B2201/30 , C03B2201/50 , C03C2201/50 , C03C2203/24 , C03C2203/36 , Y10S65/901
摘要： A process for producing an optical glass product having a predetermined distribution of refractive index in the interior of the product is disclosed. The process comprises the steps of:(a) preparing an aqueous silicate solution containing from about 0.1 to about 0.6 mol/liter of Si (as SiO.sub.2) comprising silicic acid and at least one element selected from the group consisting of rubidium, thallium and cesium;(b) mixing the silicate solution with an acidic aqueous solution, and letting the two solutions react with each other for a period of time sufficient for polymerization to produce a porous gelled product wherein the silica particles are agglomerated;(c) leaching the gelled product with a liquid selected from the group consisting of water, a weakly acidic aqueous solution, an aqueous solution having an alkali metal salt dissolved therein and an aqueous solution of organic matter capable of dissolving Rb.sub.2 O, Cs.sub.2 O, or Tl.sub.2 O, unitl the center of the product starts to dissolve; and(d) drying the leached product in a predetermined atmosphere, and further heating the partially leached gelled product at a temperature sufficiently high to eliminate the particulate material but lower than the melting point of the silica.
摘要翻译：公开了一种在产品内部具有预定折射率分布的光学玻璃制品的制造方法。该方法包括以下步骤：（a）制备含有约0.1至约0.6mol /升包含硅酸的Si（作为SiO 2）和选自铷，铊和铯中的至少一种元素的硅酸盐水溶液 ; （b）将硅酸盐溶液与酸性水溶液混合，并使两种溶液彼此反应一段足以聚合的时间以产生多孔凝胶产物，其中二氧化硅颗粒凝聚; （c）用选自水，弱酸性水溶液，溶解有碱金属盐的水溶液和能够溶解Rb 2 O，Cs 2 O或T 1/2的有机物水溶液的液体浸出凝胶状产品，产品中心开始溶解; 和（d）在预定的气氛中干燥浸出的产品，并且在足够高的温度下进一步加热部分浸出的凝胶产品以消除颗粒材料但低于二氧化硅的熔点。

5. 发明授权

US4480897A Single-polarization single-mode optical fiber 失效
标题翻译：单极化单模光纤
公开(公告)号：US4480897A
公开(公告)日：1984-11-06
申请号：US388543
申请日：1982-06-15
申请人： Katsunari Okamoto , Toshihito Hosaka , Yutaka Sasaki , Juichi Noda , Takao Edahiro
发明人： Katsunari Okamoto , Toshihito Hosaka , Yutaka Sasaki , Juichi Noda , Takao Edahiro
IPC分类号： H01P3/16 , C03B37/012 , G02B6/024 , G02B6/10 , G02B5/172
CPC分类号： G02B6/105 , G01L1/242
摘要： A single-polarization single mode optical fiber of the type comprising an elliptical core, a pair of stress applying parts on both sides of the minor radius of the elliptical core for applying asymmetrical stress thereto and a clad embedding therein the core and the stress applying parts, the stress applying parts being made of B.sub.2 O.sub.3 wherein a relative refractive index difference .DELTA. between the core and the clad satisfies a relation 0.004.ltoreq..DELTA..ltoreq.0.05, an ellipticity .epsilon. satisfies a relation 0.01.ltoreq..epsilon..ltoreq.0.9, the B.sub.2 O.sub.3 has a molar concentration of 1 to 25 mole %, ratio of thickness of the stress applying parts and the core is 5 to 15, a modal birefringence B expressed by an equation B=(.beta..sub.x -.beta..sub.y)/k satisfies a relation B=1.times.10.sup.-6 where (.beta..sub.x -.beta..sub.y) represents a propagation constant difference between HE.sub.11.sup.x and HE.sub.11.sup.y modes, and k a wave number in vacuum, whereby a polarization mode dispersion, that is a delay time difference between the HE.sub.11.sup.x and HE.sub.11.sup.y modes which are orthogonal with each other is zero.
摘要翻译：一种单偏振单模光纤，其包括椭圆形芯，用于对其施加不对称应力的椭圆形芯的小半径两侧的一对应力施加部分，以及在其中嵌入芯的包层和应力施加部应力施加部分由B 2 O 3制成，其中芯和包层之间的相对折射率差ΔTATA满足关系0.004≤ΔTA≤0.05，椭圆度ε满足关系式0.01 =ε= 0.9 ，B2O3的摩尔浓度为1〜25摩尔％，应力施加部和芯的厚度比为5〜15，由式B =（βx-βy）/ k表示的模态双折射B满足关系B = 1×10 -6其中（βx-βy）表示HE11x和HE11y模式之间的传播常数差异，以及真空中的ka波数，由此偏振模色散是HE11x和HE11y之间的延迟时间差模式whic h彼此正交为零。

6. 发明授权

US4406684A Core torch for fabricating single-mode optical fiber preforms 失效
标题翻译：用于制造单模光纤预制棒的核心手电筒
公开(公告)号：US4406684A
公开(公告)日：1983-09-27
申请号：US386752
申请日：1982-06-09
申请人： Masao Kawachi , Satoru Tomaru , Takao Edahiro , Shoichi Suto
发明人： Masao Kawachi , Satoru Tomaru , Takao Edahiro , Shoichi Suto
IPC分类号： C03B37/014 , C03B19/06
CPC分类号： C03B37/0144 , C03B37/014 , C03B2203/22 , C03B2203/24 , C03B2207/04 , C03B2207/06 , C03B2207/10 , C03B2207/16 , C03B2207/18 , C03B2207/20 , C03B2207/42 , C03B2207/50 , C03B2207/60 , C03B2207/64 , Y02P40/57 , Y10S65/90
摘要： A core torch for fabricating a single-mode optical fiber preform wherein fine glass particles are produced eccentrically with respect to the center area of a flame stream, the core torch being so arranged as to blow the flame stream at an angle inclined to a seed rod. The porous glass body forming the core is grown on one end of the rod and in the direction of the axis of the rod. A cladding layer is formed on the periphery of the porous glass core body by at least one torch for forming the cladding. The obtained porous glass body is heated and vitrified into a transparent glass body, which is sealed in a silica tube for jacketting to form a single-mode optical fiber preform. At least one exhaust port is disposed within a distance of 1 mm to 50 mm from the periphery of the porous glass body and in the vicinity of the growing surface of the glass body to exhaust residual glass fine particles and undesired gases. A porous glass body having a diameter of 20 mm or less is easily formed. Single-mode optical fiber having a cladding-to-core-diameter ratio of 3 or more is fabricated by the VAD method. Accordingly, a long-length and low-loss single-mode optical fiber is mass-produced.
摘要翻译：一种用于制造单模光纤预制件的核心手电筒，其中相对于火焰流的中心区域产生偏心的细玻璃颗粒，所述芯焊炬布置成以与种子杆倾斜的角度吹动火焰流。形成芯的多孔玻璃体在棒的一端和棒的轴线方向上生长。通过用于形成包层的至少一个焊炬在多孔玻璃芯体的周边上形成包覆层。将得到的多孔玻璃体加热并玻璃化成透明玻璃体，将其密封在用于夹套的石英管中，形成单模光纤预制棒。至少一个排气口设置在与多孔玻璃体的周边1mm至50mm的距离内，并且在玻璃体的生长表面附近，以排出残余的玻璃微粒和不期望的气体。容易形成直径为20mm以下的多孔玻璃体。通过VAD法制造包芯到芯直径比为3以上的单模光纤。因此，大批量生产长长度和低损耗的单模光纤。

7. 发明授权

US4402720A Process for preparing glass preform for optical fiber 失效
标题翻译：制备光纤玻璃预制棒的工艺
公开(公告)号：US4402720A
公开(公告)日：1983-09-06
申请号：US217075
申请日：1980-12-16
申请人： Takao Edahiro , Shiro Kurosaki , Minoru Watanabe
发明人： Takao Edahiro , Shiro Kurosaki , Minoru Watanabe
IPC分类号： C03B37/014 , C03B37/018 , C03C13/04 , C03B19/06 , C03B37/075
CPC分类号： C03C13/045 , C03B37/01413 , C03B37/0142 , C03B37/01426 , C03B37/01446 , C03B37/01807 , C03B2201/24 , C03B2207/06 , C03B2207/20 , C03B2207/30 , Y10S65/16
摘要： A process for producing a glass perform for optical transmission fibers, which includes supplying a gaseous silicon compound, ammonia or a gaseous nitrogen compound, and an oxygen-containing gas as starting gases into a high temperature zone to produce fine particles of SiOxNy glass and depositing the fine particles in the form of a soot or a transparent glass on a starting member to produce nitrogen-doped silica glass.
摘要翻译：一种用于制造用于光传输纤维的玻璃的方法，其包括将气态硅化合物，氨或气态氮化合物和含氧气体作为起始气体供应到高温区域中以产生SiO x N y玻璃的细颗粒和沉积在起始构件上形成烟灰或透明玻璃形式的细颗粒以产生掺氮石英玻璃。

8. 发明授权

US4367085A Method of fabricating multi-mode optical fiber preforms 失效
标题翻译：制造多模光纤预制棒的方法
公开(公告)号：US4367085A
公开(公告)日：1983-01-04
申请号：US188916
申请日：1980-09-19
申请人： Shoichi Suto , Fumiaki Hanawa , Masao Kawachi , Takao Edahiro , Motohiro Nakahara
发明人： Shoichi Suto , Fumiaki Hanawa , Masao Kawachi , Takao Edahiro , Motohiro Nakahara
IPC分类号： C03B37/014 , C03B19/06 , C03B37/07
CPC分类号： C03B37/014 , C03B37/0144 , C03B2203/22 , C03B2203/24 , C03B2207/04 , C03B2207/06 , C03B2207/10 , C03B2207/16 , C03B2207/18 , C03B2207/20 , C03B2207/42 , C03B2207/50 , C03B2207/60 , C03B2207/64 , Y02P40/57
摘要： A method of fabricating an optical fiber preform wherein a synthesizing torch is inclined between 10.degree. and 60.degree. with respect to the rotation axis of a seed rod. Moving the rod while rotating it, a glass raw material gas and a flame forming gas are blown out individually from the torch to synthesize glass particles which are deposited onto one end of the rod, so that a cylindrical porous preform is grown in the direction of the rotation axis of the rod. Then the porous preform is heated at a high temperature to vitrify the porous preform into a transparent optical fiber preform. At least one exhaust port is disposed at a distance of 1 mm to 50 mm from the periphery of the porous preform and in the vicinity of the growing surface of the porous preform. In fabricating the porous preform the outer diameter fluctuations are small, and the preform is formed stably without formation of cracking on the periphery of the preform.
摘要翻译：一种制造光纤预制件的方法，其中合成炬相对于种棒的旋转轴线在10°和60°之间倾斜。在旋转杆的同时移动杆，玻璃原料气体和火焰形成气体从喷枪单独吹出以合成沉积在杆的一端上的玻璃颗粒，使得圆柱形多孔预制棒沿着杆的旋转轴线。然后将多孔预成型件在高温下加热以使多孔预成型件玻璃化成透明的光纤预制件。至少一个排气口设置在多孔预型件的周边1mm至50mm的距离处，并且在多孔预型件的生长表面附近。在制造多孔预成型件时，外径波动小，并且预成型件稳定地形成，而在预成型件的周边没有形成开裂。

9. 发明授权

US4345928A Fabrication method of single-mode optical fiber preforms 失效
标题翻译：单模光纤预制棒的制作方法
公开(公告)号：US4345928A
公开(公告)日：1982-08-24
申请号：US188914
申请日：1980-09-19
申请人： Masao Kawachi , Satoru Tomaru , Takao Edahiro , Shoichi Suto
发明人： Masao Kawachi , Satoru Tomaru , Takao Edahiro , Shoichi Suto
IPC分类号： C03B37/014 , C03B19/06
CPC分类号： C03B37/0144 , C03B37/014 , C03B2203/22 , C03B2203/24 , C03B2207/04 , C03B2207/06 , C03B2207/10 , C03B2207/16 , C03B2207/18 , C03B2207/20 , C03B2207/42 , C03B2207/50 , C03B2207/60 , C03B2207/64 , Y02P40/57 , Y10S65/90
摘要： A method of fabricating a single-mode optical fiber preform wherein a core torch produces fine glass particles eccentrically with respect to the center area of a flame stream, the core torch being so arranged as to blow the flame stream at an angle inclined to a seed rod. The porous glass body forming the core is grown on one end of the rod and in the direction of the axis of the rod. A cladding layer is formed on the periphery of the porous glass core body by at least one torch for forming the cladding. The obtained porous glass body is heated and vitrified into a transparent glass body, which is sealed in a silica tube for jacketting to form a single-mode optical fiber preform. At least one exhaust port is disposed within a distance of 1 mm to 50 mm from the periphery of the porous glass body and in the vicinity of the growing surface of the glass body to exhaust residual glass fine particles and undesired gases. A porous glass body having a diameter of 20 mm or less is easily formed. Single-mode optical fiber having a cladding-to-core-diameter ratio of 3 or more is fabricated by the VAD method. Accordingly, a long-length and low-loss single-mode optical fiber is mass-produced.
摘要翻译：一种制造单模光纤预成型件的方法，其中芯焊炬相对于火焰流的中心区域偏心地产生细微的玻璃颗粒，所述芯炬被布置成以与种子倾斜的角度吹动火焰流竿。形成芯的多孔玻璃体在棒的一端和棒的轴线方向上生长。通过用于形成包层的至少一个焊炬在多孔玻璃芯体的周边上形成包覆层。将得到的多孔玻璃体加热并玻璃化成透明玻璃体，将其密封在用于夹套的石英管中，形成单模光纤预制棒。至少一个排气口设置在与多孔玻璃体的周边1mm至50mm的距离内，并且在玻璃体的生长表面附近，以排出残余的玻璃微粒和不期望的气体。容易形成直径为20mm以下的多孔玻璃体。通过VAD法制造包芯到芯直径比为3以上的单模光纤。因此，大批量生产长长度和低损耗的单模光纤。

10. 发明授权

US4338111A Process for producing a glass preform for optical fiber 失效
标题翻译：光纤玻璃预制棒的制造方法
公开(公告)号：US4338111A
公开(公告)日：1982-07-06
申请号：US218226
申请日：1980-12-19
申请人： Takao Edahiro , Michihisa Kyoto , Gotaro Tanaka , Toru Kuwahara
发明人： Takao Edahiro , Michihisa Kyoto , Gotaro Tanaka , Toru Kuwahara
IPC分类号： C03B37/014 , G02B6/00 , C03B19/06 , C03B32/00
CPC分类号： C03B37/01446 , Y10S65/90
摘要： A process for producing a preform for glass fiber for optical transmission by heating supply gases to form fine particles that are deposited on a rotating starter member to form an aggregate of fine glass particles which are then sintered to give a transparent vitreous material, characterized by a first heating stage wherein the aggregate of fine glass particles is sintered by increasing the temperature at a constant rate in a gaseous atmosphere which contains a halogen or halide and which has dehydrating activity, followed by holding the aggregate for a given period of time at a temperature in the range that causes considerable shrinkage of the aggregate, and a second heating stage where said aggregate is heated to the vitrifying temperature.
摘要翻译：一种用于通过加热供应气体来生产用于光学透射的玻璃纤维的预成型件的方法，以形成沉积在旋转起动器构件上的细颗粒，以形成细玻璃颗粒的聚集体，然后烧结以形成透明玻璃质材料，其特征在于第一加热阶段，其中通过在含有卤素或卤化物并具有脱水活性的气体气氛中以恒定速率升高温度来烧结微细玻璃颗粒的聚集体，然后将聚集体在一定时间内保持在温度在导致骨料相当收缩的范围内，以及将所述骨料加热至玻璃化温度的第二加热阶段。

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