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rod in tube early form of optical fibre and process for manufacture, and the like

机译:光纤的管子早期形式的棒及其制造方法等

摘要

An optical fiber preform includes a core rod and an overclad tube having an open, distal end dimensioned to enter the mouth of a vertical fiber draw furnace. A plug is fixed in the region of the distal end of the tube, and the core rod is disposed axially inside the overclad tube so that a distal end of the rod is restrained from downward movement by the plug as the tube enters and descends into a hot zone of the draw furnace. The distal end of the tube is heated in the furnace hot zone until the tube and the plug soften and fuse with one another. The tube then collapses onto the core rod to produce a drop from which an optical fiber having desired properties may be drawn. The claims are directed to the preform comprising rod, tube and plug and to a method of drawing an optical fiber from such a preform comprising the steps of assembling and fixing the plug to the rod-in-tube combination. IMAGE
机译:光纤预制棒包括芯棒和外包管,外包管具有开口的远端,该远端的尺寸适于进入垂直光纤拉制炉的入口。塞子固定在管的远端区域中,并且芯棒轴向设置在外包管的内部,使得当管子进入和下降到管中时,芯棒的远端被塞子限制向下运动。拉伸炉的热区。管子的远端在炉子的热区中加热,直到管子和塞子变软并彼此融合。然后,该管塌陷到芯棒上以产生液滴,可以从该液滴中抽出具有期望特性的光纤。权利要求书涉及包括棒,管和塞子的预成型件,以及从这种预成型件中拉出光纤的方法,该方法包括将塞子组装和固定到管中杆组合的步骤。 <图像>

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