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    • 5. 发明申请
    • TUBULAR SEMIFINISHED PRODUCT FOR PRODUCING AN OPTICAL FIBER
    • 用于生产光纤的管状半透明产品
    • US20150299024A1
    • 2015-10-22
    • US14711000
    • 2015-05-13
    • Heraeus Quarzglas GmbH & Co. KG
    • Ralph SattmannJan VydraMichael Huenermann
    • C03B37/027G02B6/036C03B37/018
    • C03B37/02754C03B37/01211C03B37/01228C03B37/01242C03B37/018C03B37/027C03B2201/075C03B2201/12C03B2201/20C03B2201/30C03B2201/31C03B2203/22C03B2203/23C03B2205/30C03C13/045C03C2201/12G02B6/03633G02B6/0365Y10T428/2935
    • Methods for producing an optical fiber by elongating a silica glass blank or a coaxial group of silica glass components, on the basis of which a fiber is obtained that comprises a core zone, an inner jacket zone enclosing the core zone and a ring zone surrounding the inner jacket zone, are known. In order to provide, proceeding from this, a method, a tubular semi-finished product and a group of coaxial components for the cost-effective production of an optical fiber, which is characterized by a high quality of the boundary between the core and jacket and by low bending sensitivity, according to the invention, the silica glass of the ring zone is provided in the form of a ring zone tube made of silica glass having a mean fluorine content of at least 6000 weight ppm and the tube has an inner tube surface and an outer tube surface, wherein via the wall of the ring zone tube, a radial fluorine concentration profile is adjusted which has an inner fluorine depletion layer with a layer thickness of at least 1 μm and no more than 10 μm, in which the fluorine content decreases toward the inner tube surface and is no more than 3000 weight ppm in a region close to the surface which has a thickness of 1 μm.
    • 通过使二氧化硅玻璃坯料或同轴的二氧化硅玻璃成分体组织进行拉伸来制造光纤的方法,基于该光纤获得包含芯部区域的纤维,包围芯部区域的内部护套区域和围绕该区域的环形区域 内护套区域,已知。 为了提供一种用于成本有效地生产光纤的方法,管状半成品和一组同轴部件,其特征在于芯和夹套之间的边界质量高 并且通过低弯曲灵敏度,根据本发明,环区的石英玻璃以平均氟含量为至少6000重量ppm的石英玻璃制成的环形管的形式提供,并且管具有内管 表面和外管表面,其中通过环带管的壁,调节径向氟浓度分布,其具有层厚度为至少1μm且不大于10μm的内氟耗尽层,其中 氟含量向内管表面减少,并且在接近表面厚度为1μm的区域中不超过3000重量ppm。