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1. 发明授权

US5354348A Method for producing silica glass optical fiber with carbon coating 失效
标题翻译：用碳涂层生产石英玻璃光纤的方法
公开(公告)号：US5354348A
公开(公告)日：1994-10-11
申请号：US913171
申请日：1992-07-14
申请人： Toshihiro Zushi , Shigeru Nakahara , Tetsuya Takeda , Nobusada Nagae , Masaaki Morisawa , Tamotsu Kaide , Hiroyuki Tanaka
发明人： Toshihiro Zushi , Shigeru Nakahara , Tetsuya Takeda , Nobusada Nagae , Masaaki Morisawa , Tamotsu Kaide , Hiroyuki Tanaka
IPC分类号： C03C25/10 , C03C25/22 , C03B37/023
CPC分类号： C03C25/223 , C03C25/1075
摘要： A method for producing a silica glass optical fiber, which comprises coating carbon on the optical fiber with the use of the remaining heat of not less than 800.degree. C. possessed by the optical fiber just after heat wire drawing, for thermal decomposition of a carbon coat-forming gas comprised of one or more members selected from the group of halogenated hydrocarbons, hydrocarbons, and halogen molecules, which has 5 to 15 hydrogen atoms per 10 halogen atoms, and a reaction apparatus for coating carbon, wherein the area of the outer end of an exhaust region is greater than the transverse sectional area of a coating region, and the outer end is outwardly opened. The production method and the reaction apparatus therefor of the present invention are advantageous in that the optical fiber thus obtained has superior properties in terms of resistance to water, resistance to hydrogen, and mechanical strength, specifically tensile strength, that sedimentation of the soot component in the reaction apparatus can be prevented, that the flow of the material gas can be made smooth, that a uniform carbon coat can be formed on the surface of the optical fiber, and that long-term operation of carbon coating apparatus can be made possible.
摘要翻译：一种二氧化硅玻璃光纤的制造方法，其特征在于，在光纤拉丝后，利用光纤所具有的不低于800℃的剩余热量，在碳纤维上涂覆碳，进行碳分解由选自卤化烃，碳氢化合物和卤素分子的一个或多个成员组成的涂层形成气体，每10个卤素原子具有5至15个氢原子，以及用于涂覆碳的反应装置，其中外部区域排气区域的端部大于涂覆区域的横截面面积，并且外端部向外打开。本发明的制造方法及其反应装置的优点在于，由此获得的光纤在耐水性，耐氢性以及机械强度（特别是拉伸强度）方面具有优异的性能，即烟灰组分的沉降可以防止反应装置能够使材料气体的流动平滑，可以在光纤表面上形成均匀的碳涂层，并且可以使碳涂覆装置的长期运行成为可能。

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