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公开(公告)号:US4165224A
公开(公告)日:1979-08-21
申请号:US888050
申请日:1978-03-17
申请人: John Irven , Andrew P. Harrison
发明人: John Irven , Andrew P. Harrison
IPC分类号: C03B37/018 , G02B6/00 , C03B37/02 , C03C25/02
CPC分类号: C03B37/01853 , C03B37/01861 , C03B2201/06 , C03B2201/28 , C03B2201/31 , C03B2203/22
摘要: In the manufacture of silica optical fibers a tube having an internal coating of a volatile dopant is locally heated by a hot zone repeatedly traversed along its length to promote shrinkage and finally collapse of the tube bore. During the shrinkage prior to the final collapse traversal a gas flow of oxygen and a halide of the volatile dopant is maintained through the tube in order firstly to provide a small overpressure to ensure circularity in the shrinkage and secondly to compensate for the tendency for dopant to be lost by volatilization.
摘要翻译: 在二氧化硅光纤的制造中,具有挥发性掺杂剂的内部涂层的管通过沿其长度重复穿过的热区域局部加热,以促进管孔的收缩并最终塌缩。 在最终塌缩过程之前的收缩期间,通过管保持氧气和挥发性掺杂剂的卤化物的气流,以便首先提供小的过压以确保收缩的圆形度,其次补偿掺杂剂的倾向 被挥发失去。
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公开(公告)号:US4155733A
公开(公告)日:1979-05-22
申请号:US800269
申请日:1977-05-25
申请人: Carl P. Sandbank , John Irven
发明人: Carl P. Sandbank , John Irven
IPC分类号: C03B17/02 , C03B17/04 , C03B20/00 , C03B37/012 , C03B37/018 , C03B37/027 , G02B6/00 , C03B37/00
CPC分类号: C03B37/018 , C03B17/025 , C03B17/04 , C03B37/01274 , C03B37/01861 , C03B37/02736 , C03B37/02754 , C03B2205/13 , C03B2205/16 , C03B2205/30
摘要: A continuous flow process is disclosed in which optical fibre is made by a method involving the chemical vapor deposition of material upon the bore of a tube. The tube is fabricated from an annular crucible around a vertical gas feed and is lowered through a hot zone where it is softened and drawn into fibre. The gas deposits one or more layers on the inside of the tube prior to drawing so as to provide the drawn fibre with optical waveguide properties.
摘要翻译: 公开了一种连续流动方法,其中通过涉及在管的孔上的材料的化学气相沉积的方法制造光纤。 该管由围绕垂直气体进料的环形坩埚制造,并通过热区域下降,在该区域被软化并拉入纤维中。 在拉伸之前,气体在管的内部沉积一层或多层,以便为拉制的纤维提供光波导性能。
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