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    Method for producing carbon-coated optical fiber
    1.
    发明授权
    Method for producing carbon-coated optical fiber 失效
    生产碳涂层光纤的方法

    公开(公告)号：US5024688A

    公开(公告)日：1991-06-18

    申请号：US423308

    申请日：1989-10-18

    申请人： Keiji Oohashi ,  Shinji Araki ,  Hideo Suzuki ,  Tsuyoshi Shimomichi

    发明人： Keiji Oohashi ,  Shinji Araki ,  Hideo Suzuki ,  Tsuyoshi Shimomichi

    IPC分类号： C03C25/10

    CPC分类号： C03C25/1075

    摘要： Disclosed is a method for producing carbon-coated optical fiber including the steps of thermally decomposing a halogenated hydrocarbon compound to obtain a thermal decomposate of the halogenated hydrocarbon, and depositing the thermal decomposate on a surface of an uncoated optical fiber to form at least one carbon coating layer on the surface of the fiber. The halogenated hydrocarbon compounds include CClF.sub.3 , CCl.sub.2 F.sub.2 , CCl.sub.3 F, C.sub.2 Cl.sub.2 F and C.sub.2 ClF.sub.5. The deposition is performed at a temperature which is slightly below the thermal decomposition temperature. The method includes an optional step of coating at least one resin layer over a surface of the carbon coating layer.

    Method of cleaning and carbon coating optical fiber
    2.
    发明授权
    Method of cleaning and carbon coating optical fiber 失效
    清洁和涂碳光纤的方法

    公开(公告)号：US5037464A

    公开(公告)日：1991-08-06

    申请号：US444186

    申请日：1989-11-30

    申请人： Keiji Oohashi ,  Hideo Suzuki ,  Shinji Araki ,  Tsuyoshi Shimomichi

    发明人： Keiji Oohashi ,  Hideo Suzuki ,  Shinji Araki ,  Tsuyoshi Shimomichi

    IPC分类号： C03C25/10 ,  C03C25/22

    CPC分类号： C03C25/223 ,  C03C25/1075

    摘要： A method for manufacturing carbon coated optical fiber includes the steps of removing adherent foreign material from a surface of a bare optical fiber, and forming at least one carbon layer on the surface thereof using a chemical vapor deposition method. The first step is performed by heating and drying the surface of the bare optical fiber in a 80 to 150 degrees C. temperature region to vaporize the adherent foreign material while supplying an inert gas to the surface thereof so as to substitute the inert gas for the vaporized adherent foreign material. The second step is performed by thermally decomposing at least one hydrocarbon compound to obtain a thermal decomposate of the hydrocarbon, and depositing the thermal decomposate on the surface of the bare optical fiber. Also, disclosed is a method for manufacturing carbon coated optical fiber including the steps of cooling a surface of a bare optical fiber to a temperature no higher than 50.degree. C., and forming at least one carbon layer on the surface using a chemical vapor deposition method. The cooling step is performed by supplying a cooled inert gas to the surface of the bare optical fiber.

    Method for splicing and reinforcing carbon coated optical fibers
    4.
    发明授权
    Method for splicing and reinforcing carbon coated optical fibers 失效
    拼接和加强碳涂层光纤的方法

    公开(公告)号：US5360464A

    公开(公告)日：1994-11-01

    申请号：US22479

    申请日：1993-02-25

    申请人： Ryozo Yamauchi ,  Akira Wada ,  Keiji Oohashi ,  Shinji Araki ,  Tsuyoshi Shimomichi

    发明人： Ryozo Yamauchi ,  Akira Wada ,  Keiji Oohashi ,  Shinji Araki ,  Tsuyoshi Shimomichi

    IPC分类号： G02B6/255 ,  G02B6/38 ,  C03B37/023

    CPC分类号： G02B6/2558 ,  G02B6/2551

    摘要： The present invention relates to a method for the fusion splicing of carbon coated optical fibers and to a method for providing reinforced performance of the spliced points. Concretely, carbon coated optical fibers are fusion spliced in an atmosphere containing less than 0.5 vol % of oxygen without the removal of the carbon coating. In order to minimize the amount of damage to the carbon coating resulting from the fusion, the decline in the failure probability of the optical fiber is controlled by means of applying moisture to the spliced part or by means of the adhesion of the oxidized carbon gases to the optical fiber. On the other hand, the carbon coating layer which was removed by oxidation at the time of the fusion splicing is recoated by means of a CVD reaction using a laser as a heat source. By means of this, the decline in the fatigue characteristics of the spliced part can be controlled.

    摘要翻译： 本发明涉及一种用于碳涂覆光纤的熔接方法以及用于提供拼接点的加强性能的方法。 具体地说，碳涂覆的光纤在不含碳涂层的情况下，在含有少于0.5体积％的氧气的气氛中熔接。 为了最小化由熔融导致的碳涂层的损害量，通过对接合部分施加水分或通过将氧化的碳气体粘附到...来控制光纤的故障概率的下降 光纤。 另一方面，通过使用激光作为热源的CVD反应重新涂覆在熔接时通过氧化除去的碳涂层。 借此，能够控制拼接部的疲劳特性的下降。

    Method for splicing and reinforcing carbon coated optical fibers
    5.
    发明授权
    Method for splicing and reinforcing carbon coated optical fibers 失效
    用于分层和增强碳涂层光纤的方法

    公开(公告)号：US5223014A

    公开(公告)日：1993-06-29

    申请号：US717800

    申请日：1991-06-19

    申请人： Ryozo Yamauchi ,  Akira Wada ,  Keiji Oohashi ,  Shinji Araki ,  Tsuyoshi Shimomichi

    发明人： Ryozo Yamauchi ,  Akira Wada ,  Keiji Oohashi ,  Shinji Araki ,  Tsuyoshi Shimomichi

    IPC分类号： G02B6/255 ,  G02B6/38

    CPC分类号： G02B6/2558 ,  G02B6/2551

    摘要： The present invention relates to a method for the fusion splicing of carbon coated optical fibers and to a method for providing reinforced performance of the spliced points. Concretely, carbon coated optical fibers are fusion spliced in an atmosphere containing less than 0.5 vol % of oxygen without the removal of the carbon coating. In order to minimize the amount of damage to the carbon coating resulting from the fusion, the decline in the failure probability of the optical fiber is controlled by means of applying moisture to the spliced part or by means of the adhesion of the oxidized carbon gases to the optical fiber. On the other hand, the carbon coating layer which was removed by oxidation at the time of the fusion splicing is recoated by means of a CVD reaction using a laser as a heat source. By means of this, the decline in the fatigue characteristics of the spliced part can be controlled.