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    • 33. 发明专利
    • Manufacturing method and apparatus of optical fiber
    • 光纤的制造方法和装置
    • JP2009007201A
    • 2009-01-15
    • JP2007170189
    • 2007-06-28
    • Hitachi Cable Ltd日立電線株式会社
    • SHIROSAWA TATSUYATAKAMIYA HIROAKI
    • C03B37/027G02B6/00G02B6/032
    • C03B37/0253C03B37/02781C03B2203/14C03B2203/42C03B2205/10
    • PROBLEM TO BE SOLVED: To provide a manufacturing method and apparatus of an optical fiber, by which an optical fiber having a hole can be manufactured in a high yield while securing a constant hole diameter over the entire length in a longitudinal direction. SOLUTION: The manufacturing method of the optical fiber including heating and melting an optical fiber preform 3 and drawing the preform into an optical fiber 4 having at least one hole along the longitudinal direction, wherein the optical fiber 4 while drawn is irradiated with illumination light from an illumination device 5 so as to detect the shadow of the hole from the illumination light transmitting through the optical fiber while drawn, and controlling the diameter of the hole from the shadow of the hole. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了提供一种光纤的制造方法和装置,通过该光纤可以以高产率制造具有孔的光纤,同时确保在纵向方向上的整个长度上的恒定的孔直径。 解决方案:包括加热和熔化光纤预制棒3并将预成型件拉制成沿着纵向方向具有至少一个孔的光纤4的光纤的制造方法,其中拉伸时的光纤4被照射 来自照明装置5的照明光,以便在被拉伸时从透射光纤的照明光检测孔的阴影,并且从孔的阴影控制孔的直径。 版权所有(C)2009,JPO&INPIT
    • 34. 发明专利
    • Method for manufacturing holey fiber and holey fiber
    • 孔纤维和孔纤维的制造方法
    • JP2008310034A
    • 2008-12-25
    • JP2007157696
    • 2007-06-14
    • Furukawa Electric Co Ltd:The古河電気工業株式会社
    • MUKASA KAZUNORI
    • G02B6/00C03B37/027G02B6/032
    • G02B6/02333B29D11/00663C03B37/0122C03B37/02781C03B2203/14C03B2203/42C03B2205/10G02B6/02019G02B6/29377Y02P40/57
    • PROBLEM TO BE SOLVED: To provide a method of manufacturing a holey fiber having desired characteristics at a high productivity, and also to provide the holey fiber. SOLUTION: The method of manufacturing the holey fiber, which is provided with a core part located at the center and a clad part having cavities which are formed in layers around the outer periphery of the core part, comprises: a base material forming process in which a core rod is arranged at the center of a jacket tube, capillary tubes are arranged around the core rod to form a base material; and a drawing process in which the formed base material is heated and melted and linearly drawn in a heating furnace. In the drawing process, the base material is linearly drawn while at least one of the gas pressure in the cavities of the capillary tubes, the temperature of the heating furnace and the speed of drowning is controlled according to the structure of the cavities in the first layer from the core rod side. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种以高生产率制造具有所需特性的多孔纤维的方法,并且还提供多孔纤维。 解决方案:设置有位于中心的芯部的多孔纤维的制造方法和具有围绕芯部的外周形成的空腔的包层部,包括:形成基材的基材 将芯棒布置在护套管的中心的过程,毛细管布置在芯棒周围以形成基底材料; 以及将加热熔融成形的基材在加热炉中直线拉伸的拉丝工序。 在拉伸过程中,基材被线性拉伸,而毛细管的空腔中的气体压力,加热炉的温度和淹没的速度中的至少一个根据第一个空腔中的空腔的结构来控制 从芯棒一侧的层。 版权所有(C)2009,JPO&INPIT
    • 37. 发明专利
    • Method for manufacturing optical fiber
    • 制造光纤的方法
    • JP2005255422A
    • 2005-09-22
    • JP2004065632
    • 2004-03-09
    • Mitsubishi Cable Ind Ltd三菱電線工業株式会社
    • YAMAMOTO TETSUYANISHINA RINTAROKUSUNOKI SHUICHIITO HIDEAKI
    • G02B6/00C03B37/012C03B37/027
    • C03B37/0122C03B37/02781C03B2203/14C03B2205/10
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a high aperture and high numerical aperture (NA) optical fiber. SOLUTION: The method for manufacturing an optical fiber 4 comprises the preparation step of preparing a core rod 1 for forming a core and a plurality of capillaries 2 for forming a clad, the rod bundle formation step of forming a rod bundle 7 by bundling the core rod 1 and the plurality of the capillaries 2 prepared in the preparation step in a manner that the core rod 1 is surrounded with the capillaries 2, the preform formation step of forming a preform 18 by heating and drawing the rod bundle 7 formed in the rod bundle formation step to effect its diameter reduction and their integration, and the drawing step of heating and drawing the preform 18 formed in the preform formation step into a fiber. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种用于制造高孔径和高数值孔径(NA)光纤的方法。 解决方案:制造光纤4的方法包括制备用于形成芯的芯棒1和用于形成包层的多个毛细管2的制备步骤,所述棒束形成步骤通过以下方式形成棒束7: 将芯棒1和制备步骤中制备的多个毛细管2以芯棒1被毛细管2包围的方式捆扎,预成型件形成步骤通过加热和拉伸形成的棒束7形成预制棒18 在棒束形成步骤中实现其直径减小和它们的一体化,以及将在预成型体形成步骤中形成的预成型件18加热和拉伸成纤维的拉拔步骤。 版权所有(C)2005,JPO&NCIPI