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1. 发明专利

JPH03228849A MULTICOMPONENTAL GLASS FIBER DOPED WITH RARE EARTH 失效
公开(公告)号：JPH03228849A
公开(公告)日：1991-10-09
申请号：JP2103790
申请日：1990-01-31
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： HORIGUCHI MASAHARU , SUGITA ETSUJI , SHIMIZU MAKOTO , MUTA KENICHI , YAGI KENJI , MORISHITA YUICHI
IPC分类号： C03C13/04
摘要： PURPOSE:To enhance light amplification function in a long wavelength region by regulating both multicomponental glass for a core and multicomponental glass for a cladding to the specified composition ratio and especially adding rare earth oxide to the component for the core. CONSTITUTION:Multicomponental glass for a core having 1.520-1.530 refractive index is obtained by mixing 50-70wt.% (hereinafter shown in %) SiO2, 1-7% Al2O3 15-25% alkali metallic oxide such as Na2O, 5-16% alkaline earth metallic oxide such as CaO, 0-3% Sb2O3 and/or Al2O3 and

2. 发明专利

JPH11311726A COATED OPTICAL FIBER RIBBON 失效
公开(公告)号：JPH11311726A
公开(公告)日：1999-11-09
申请号：JP12091198
申请日：1998-04-30
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： YAGI KENJI , MURASE TOMOTAKA , SHIRAISHI KEIKO , MUTA KENICHI
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide a coated optical fibers capable of increasing the density of the optical fibers of an optical fiber cable and easily dealing with the high density of PLC, and having high fiber density. SOLUTION: This ribbon 10 is constituted by arraying in parallel optical fibers 11 each consisting of an optical fiber 13 formed by providing a clad layer on a core and a nopeeling thin layer 14 formed of synthetic resin having good adhesive strength to the clad layer of the optical fiber 13 and a 50 to 250 kg/mm Young's modulus at room temperature to a thickness of 2 to 15 μm, and providing a batch coating 12 in two-layered structure at the outer periphery by stacking a primary coating 15 of synthetic resin having a 0.01 to 0.5 kg/mm Young's modulus at room temperature and a secondary coating 16 of synthetic resin having a 10 to 200 kg/mm Young's modulus at room temperature in order.

3. 发明专利

CA1230349A CLADDING GLASS FOR OPTICAL FIBER 未知
公开(公告)号：CA1230349A
公开(公告)日：1987-12-15
申请号：CA467053
申请日：1984-11-05
申请人： TOSHIBA KK , SHOWA ELECTRIC WIRE & CABLE CO
发明人： KASORI MITUO , IMAGAWA HIROSHI , MAKI HIRONORI , YAGI KENJI , KOKUBO OSAMU
IPC分类号： C03C3/118 , C03C13/04 , G02B6/00 , G02B6/02
摘要： : Cladding glass for optical fiber A cladding glass for optical fiber comprises 60 to 80 % by weight of silicon dioxide (SiO2), 0.5 to 10 % by weight of aluminum oxide (Al2O3), 9 to 17 % by weight of an alkali metal oxide, 3 to 15 % by weight of boron oxide (B2O3) and more than 0 but not more than 3 % by weight of fluorine (F). The cladding glass of this invention can simultaneously satisfy low refractive index and lowered viscosity, and is also excellent in water resistance and weathering resistance.

4. 发明专利

JPH07133129A DEVICE FOR PRODUCING OPTICAL FIBER PREFORM 失效
公开(公告)号：JPH07133129A
公开(公告)日：1995-05-23
申请号：JP27987793
申请日：1993-11-09
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： YAGI KENJI , SAKURAI ISAMU , FUKADA TOMOCHIKA
IPC分类号： G02B6/00 , C03B37/014 , C03B37/018
摘要： PURPOSE:To improve the characteristic of the preform by optimizing the flow of soot in a reaction vessel. CONSTITUTION:Exhaust pipes 11-1 and 11-2 are prepared to exhaust the excess of the soot 5 formed by a burner 4 and movably supported. The outer diameter of a preform 6 is gradually increased during its production and the flow of the soot 5 is spread and made tubulent, the exhaust pipes 11-1 and 11-2 are moved in the directions of the arrows 16 and 17 respectively, and the flow of soot is straightened. Consequently, a large amt. of soot is not suspended in the reaction vessel, and the characteristic of the preform is enhanced.

5. 发明专利

JPH07120350A FLOOD-DETECTING LINE AND CABLE PROVIDED WITH IT 失效
公开(公告)号：JPH07120350A
公开(公告)日：1995-05-12
申请号：JP26348993
申请日：1993-10-21
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： YAGI KENJI
IPC分类号： G01M3/38 , G02B6/02 , G02B6/44
摘要： PURPOSE:To provide a flood-detecting line enabling highly accurate detection of a flood and, a cable for accurately detecting a flood causing a deterioration by using the detecting line. CONSTITUTION:A wire 2 of a second metal is housed loosely into a pipe 1 of a first metal having many through holes 1a. Moreover, an optical fiber core 3 is wound spirally around an outer periphery of the wire 2 of the second metal and housed in the pipe 1 of the first metal, thereby to constitute a flood- detecting line 4. A plurality of optical fiber tapes are layered and accommodated in a predetermined number of recesses spirally formed in an outer periphery of a slot rod, and the flood-detecting line 4 is arranged in the remaining recesses. The slot rod has a tension member at the center thereof. A layer obtained by winding a retainer tape and a plastic sheath are sequentially set on the outer periphery to constitute the optical fiber cable.

6. 发明专利

JPH06148478A METHOD FOR CONTROLLING SHAPE OF OPTICAL FIBER TAPE 失效
公开(公告)号：JPH06148478A
公开(公告)日：1994-05-27
申请号：JP29463392
申请日：1992-11-02
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： CHIBA MINORU , INOUE NAOYA , SHIONO TAKEO , ITO MITSUO , YAGI KENJI
IPC分类号： G02B6/44
摘要： PURPOSE:To monitor the shape of an optical fiber tape on line and produce the optical fiber tape excellent in outside appearance and characteristics. CONSTITUTION:In the case of producing the optical fiber tape T providing a resin coating on plural coated optical fiber by dime 2, the image of the shape of the optical fiber tape T fed to a receiving machine 4, especially, the thickness of the coating picked up by a CCD camera 6 set behind a resin hardening device 3, and the video is analyzed by an image processing means 7, and the position of the inclination of the die 2 is finely adjusted based on the result of the analysis so as to control to prevent the dispersion of thickness at both ends. When the image is picked up by the CCD camera 6, the video is made clear by attaching the liquid whose refractive index is >=1.35 to the optical fiber tape.

7. 发明专利

JPS6070402A PRODUCTION OF OPTICAL FIBER FOR LASER GUIDE 失效
公开(公告)号：JPS6070402A
公开(公告)日：1985-04-22
申请号：JP17898183
申请日：1983-09-27
申请人： TOSHIBA KK , SHOWA ELECTRIC WIRE & CABLE CO
发明人： ISHIKAWA KEN , YAGI KENJI , IWAMOTO TOSHIO
IPC分类号： C03B37/15 , C03B37/14 , G02B6/00 , G02B6/42
摘要： PURPOSE:To form integrally an expanded diameter part having a prescribed outside diameter at one end of an optical fiber in order to form an incident end face having a desired area by repeating the process for heating a part of the optical fiber and exerting compressive force to the longitudinal direction of the fiber. CONSTITUTION:The circumferential surface of an exposed part 1a is heated while an optical fiber 1 is rotated. The exposed part 1a is heated in this process until the core part 2 and clad layers 3, 4 of said part are softened while the temp. increase in a protective plastic layer 5 part near the exposed part 1a is prevented by cooling the layer 5 part or disposing a light shielding plate between the layer 5 and the part 1a. Compressive force is then exerted to the softened part 1a in the longitudinal direction of the fiber 1. A cylindrical forming member 6 is disposed coaxially on the circumferential surface of the part 1a in this case and therefore the heated part 1a is expanded and regulated to the inside diameter D2 of the member 6. The expanded diameter part 7 having a prescribed diameter D2 is thus formed and the diameter D1 of a core 2 is expanded to D3 in the part 7. The part 7 is cut at a line A-A and the cut surface is polished by which an incident face 8 is formed.

8. 发明专利

JPS59188604A Strand fiber for bundled fiber 失效
标题翻译：梳理纤维织物纤维
公开(公告)号：JPS59188604A
公开(公告)日：1984-10-26
申请号：JP6337783
申请日：1983-04-11
申请人： Showa Electric Wire & Cable Co Ltd
发明人： SHIBUYA KIYOSHI , YAGI KENJI , SUGIYAMA NORIO
IPC分类号： C03C25/42 , C03C25/10 , G02B6/00 , G02B6/44
CPC分类号： G02B6/4479 , C03C25/104
摘要： PURPOSE:To obtain a strand fiber having lubricity while making the coating layer thinner by coating a strand fiber with a granular coating material having high mechanical strength and superior lubricity. CONSTITUTION:A strand fiber 1 consists of a core 2, a clad 3 and a support pipe 4 coated with a granular coating material 5 having high mechanical strength and superior lubricity such as molybdenum disulfide or graphite. The fiber 1 is provided with lubricity while making the coating layer 5 thinner, and freely bendable bundled fibers enabling easy operation are obtd. using the fiber 1.
摘要翻译：目的：通过用具有高机械强度和优异润滑性的颗粒状涂层材料涂布线股纤维来获得具有润滑性的股线纤维，同时使涂层更薄。构成：股线纤维1由芯2，包层3和涂覆有具有高机械强度和优异润滑性的颗粒状涂料5的支撑管4组成，例如二硫化钼或石墨。纤维1具有润滑性，同时使得涂层5更薄，并且可以实现易于操作的自由弯曲的捆扎纤维。使用纤维1。

9. 发明专利

JPS59172602A Method for restoring function of light guide for device for detecting oil leakage 失效
标题翻译：用于恢复用于检测油泄漏的装置的指南的功能的方法
公开(公告)号：JPS59172602A
公开(公告)日：1984-09-29
申请号：JP4847983
申请日：1983-03-23
申请人： Showa Electric Wire & Cable Co Ltd
发明人： KOJIMA TAKESHI , YAGI KENJI , ADACHI KOUJI
IPC分类号： G02B6/02 , G01M3/04 , G01M3/18
CPC分类号： G01M3/18 , G01M3/047
摘要： PURPOSE:To remove oil permeating the inside of the clad of a light guide without cutting off the part of the guide swollen with the oil by immersing the swollen part in an org. solvent having compatibility with oil to be detected and high volatility for a prescribed time. CONSTITUTION:An org. solvent having compatibility with oil to be detected and high volatility and not swelling the clad of a light guide is used. When the clad is made of silicone resin and oil to be detected is synthetic insulating oil such as alkylbenzene applied usually to an OF cable, alcohol or acetone is suitably used. A light guide is preferably immersed in said org. solvent for 1-2hr, yet when the guide is repeatedly immersed in the solvent and allowed to stand in the air to evaporate the solvent several times, immersion for
摘要翻译：目的：通过将肿胀部分浸入组织中，去除透过导光体内部的油，而不会将导致肿块引导的部分切断。溶剂与待检测的油的相容性和高挥发性达规定时间。构成：组织使用与待检测的油具有相容性的溶剂，并且使用高挥发性并且不使光导的包层膨胀。当包层由硅树脂制成时，待检测的油是通常用于OF电缆的合成绝缘油，例如烷基苯，适合使用醇或丙酮。光导优选浸在所述组织中。溶剂1-2小时，但是当引导件反复浸入溶剂中并使其静置在空气中几次蒸发溶剂时，浸泡<1小时可产生足够的效果。不一定需要将整个导光体浸渍，并且当检测到用油包层溶胀的部分时，只有该部分可能被浸没。

10. 发明专利

JPS5992713A OF CABLE LINE WITH LEAKAGE OIL DETECTION SYSTEM 失效
公开(公告)号：JPS5992713A
公开(公告)日：1984-05-29
申请号：JP20028982
申请日：1982-11-17
申请人： CHUBU ELECTRIC POWER , SHOWA ELECTRIC WIRE & CABLE CO
发明人： KAWAMURA RIYOUHEI , ARAKANE MASAKATSU , ARAI MOTOYUKI , KOJIMA TAKESHI , YAGI KENJI
IPC分类号： H02G15/24 , H02G15/28

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