Method for manufacturing optical fiber preform and method for manufacturing optical fiber
    153.
    发明公开
    Method for manufacturing optical fiber preform and method for manufacturing optical fiber 有权
    制造光纤的预制件的用于生产光学纤维的方法,和程序

    公开(公告)号:EP1016636A1

    公开(公告)日:2000-07-05

    申请号:EP99125712.2

    申请日:1999-12-23

    Inventor: Tanaka, Akiyoshi

    Abstract: A method for manufacturing optical fiber preform comprising a core glass containing a light emitting substance (e.g. rare earth metal dopant) and a cladding glass, easily controlling an amount of the light emitting substance incorporated into the core glass without requiring any complicated step, includes the steps of forming a porous layer made of a precursor of the core glass on an inner surface of a hollow tube having an inner surface made of the cladding glass, spraying a medium containing the light emitting substance onto the porous layer, forming a layer of the core glass containing the light emitting substance by sintering the porous layer containing the light emitting substance, and forming a preform rod by collapsing the obtained hollow tube into a solid article. Alternatively, another method according to the invention includes the steps of spraying a medium containing a precursor of the core glass on the inner surface of the hollow tube, forming the core glass layer by sintering the formed precursor layer, and forming a preform rod by collapsing the obtained hollow tube into a solid article. A third method comprises spraying sequentially core-forming material and light emitting substance and a fourth method simultaneous spraying of both. An optical fiber can be formed by drawing the thus obtained optical fiber preforms.

    Abstract translation: 一种用于制造光纤预制件,其包括一个芯玻璃包含发光物质(例如稀土金属掺杂剂)和包层玻璃,容易地控制掺入到芯玻璃中的发光物质的量,而不需要任何复杂的步骤的方法,包括 形成由芯玻璃的前体的多孔层的步骤上的具有由包层玻璃的内表面上的中空管,喷涂含有轻到多孔层的发光物质的介质中,形成的一个层内表面 芯玻璃通过烧结包含发光物质的多孔层,并且通过折叠所述中空管获得成固体制品形成预制棒包含发光物质。 可替代地,雅丁本发明的另一方法包括喷涂含中空管的内表面上的芯玻璃的前体的培养基中,通过烧结所形成的前体层形成芯玻璃层,并通过折叠形成预制棒的步骤 得到的中空管成固体制品。 第三种方法包括喷涂依次形成芯的材料和发光物质和二者的第四方法同时喷雾。 光纤可通过拉伸如此获得的光纤预制件来形成。

    Selective volitization method for preparing fiber optics
    155.
    发明公开
    Selective volitization method for preparing fiber optics 失效
    Verfahren zum selektiven Verdampfen zur Herstellung von optischen Fasern。

    公开(公告)号:EP0326037A2

    公开(公告)日:1989-08-02

    申请号:EP89100991.2

    申请日:1989-01-20

    Abstract: A method for fabricating optical fibers having a rare-earth doped core and a fused silica cladding includes inserting a rare-earth doped soft glass rod into a fused silica tube, the ratio of the outer diameter (OD) to the inner diameter (ID) of the fused silica tube being at least 2 and as large as 50; heating the rod and tube combination in a furnace to selectively volatilize volatile constituents of the soft glass rod which are responsible for the low softening point so that the final composition of the core consists predominantly of SiO₂ and the desired dopants such as rare earths, alkaline earths or other low vapor pressure materials; and drawing the perform into an optical fiber.

    Abstract translation: 一种制造具有稀土掺杂芯和熔融石英包层的光纤的方法,包括将稀土掺杂的软玻璃棒插入熔石英管中,外径(OD)与内径(ID)的比率 的熔融石英管是至少2和大至50; 在炉中加热棒和管组合以选择性地挥发软质玻璃棒的挥发性成分,这些挥发性成分负责低软化点,使得芯的最终组成主要由SiO 2和所需的掺杂剂例如稀土,碱土 或其他低蒸气压材料; 并将演出绘制成光纤。

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