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1. 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。

2. 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。

3. 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。

4. 发明授权

US4838916A Method for making single-polorization, single mode optical fibers 失效
标题翻译：单模光纤制造方法
公开(公告)号：US4838916A
公开(公告)日：1989-06-13
申请号：US115606
申请日：1987-10-29
申请人： Takao Edahiro , Tetsuo Miya , Yutaka Sasaki , Katusunari Okamoto , Masao Kawachi
发明人： Takao Edahiro , Tetsuo Miya , Yutaka Sasaki , Katusunari Okamoto , Masao Kawachi
IPC分类号： C03B20/00 , C03B37/012 , C03B37/027 , C03C13/04 , G02B6/00 , G02B6/024 , G02B6/10
CPC分类号： C03B37/02709 , C03B37/01217 , G02B6/02042 , G02B6/105 , C03B2203/224 , C03B2203/31 , C03B2205/12
摘要： A single-polarization single-mode optical fiber comprises a core made of silica glass, a clad surrounding the core and made of silica glass having a smaller index of refraction than the glass comprising the core, a pair of stress applying members symmetrically disposed on the clad and made of silica glass having different thermal expansion coefficient from that of the clad, spacers interposed between the stress applying members and made of silica glass having substantially the same thermal expansion coefficient as the clad, and a jacket surrounding the spacers, stress applying members. The jacket is also made of silica glass and has a smaller expansion coefficient than the stress applying members. The optical fiber of this invention has an excellent polarization preserving characteristic, low loss, long length, and stable characteristics.
摘要翻译：单极化单模光纤包括由石英玻璃制成的芯，包围芯并由石英玻璃制成的包层比包含芯的玻璃具有更小的折射率的折射率的一对应力施加部件包覆并且由包层的热膨胀系数不同的二氧化硅玻璃制成，夹在应力施加构件之间的隔离物和具有与包层基本相同的热膨胀系数的石英玻璃制成的隔离物和围绕隔离物的护套，应力施加构件。护套也由石英玻璃制成，并且具有比应力施加构件更小的膨胀系数。本发明的光纤具有优异的偏振保持特性，低损耗，长长度和稳定特性。

5. 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。

6. 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

7. 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。

8. 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.

9. 发明授权

US5033815A Optical transmission fiber and process for producing the same 失效
标题翻译：光传输光纤及其制造方法
公开(公告)号：US5033815A
公开(公告)日：1991-07-23
申请号：US523680
申请日：1990-04-27
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 , G02B6/44 , G02B6/00
CPC分类号： G02B6/4492 , C03B37/014 , C03B37/018 , C03C13/045 , C03B2201/02 , C03B2201/08 , C03B2201/12 , C03B2201/14 , C03B2201/28 , C03B2201/30 , C03B2201/31 , C03B2201/32 , C03B2201/40 , C03B2201/42 , C03B2203/22
摘要： An optical transmission fiber comprising (1) a core of high refractive index composed of SiO.sub.2 -based glass containing at least one of GeO.sub.2, As.sub.2 O.sub.3, Sb.sub.2 O.sub.5, SnO.sub.2, TiO.sub.2, PbO and Bi.sub.2 O.sub.3, (2) a clad of low refractive index composed of SiO.sub.2 -based glass containing at least one of F, F/B.sub.2 O.sub.3 and F/P.sub.2 O.sub.5, and (3) an outermost jacket layer composed of SiO.sub.2 and/or SiO.sub.2 -based glass containing at least one of Al.sub.2 O.sub.3, TiO.sub.2, ZrO.sub.2 and HfO.sub.2.

10. 发明授权

US4372647A Single mode optical fibers 失效
标题翻译：单模光纤
公开(公告)号：US4372647A
公开(公告)日：1983-02-08
申请号：US192704
申请日：1980-10-01
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： C03C13/04 , G02B5/14
CPC分类号： G02B6/03611 , C03C13/045 , G02B6/03627 , G02B6/02233
摘要： In a single mode optical fiber of the type comprising a core, a cladding surrounding the core and an intermediate layer, the refractive indices n1, n2 and n3 respectively of the core, the cladding and the intermediate layer are selected such that the following relations are satisfied0.5 .DELTA.2>-1.0where ##EQU1##
摘要翻译：在包括芯，围绕芯的包层和中间层的单模光纤中，选择芯，包层和中间层的折射率n1，n2和n3，使得以下关系是满足0.5 DELTA 2> -1.0其中

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