Optical fibres
    2.
    发明公开
    Optical fibres 失效
    光纤

    公开(公告)号:EP0177206A1

    公开(公告)日:1986-04-09

    申请号:EP85306478.0

    申请日:1985-09-12

    Applicant: STC PLC

    Abstract: In order to eliminate the effect of water attack on silica optical fibres, the fibres are provided with a surface layer of silicon nitride or silicon oxynitride. The method proposed comprises direct nitridation. This may be achieved by adding a nitriding atmosphere to the drawing furnace gases (Fig. 1), or to the reactive gases (TiCl 4 and SiCl 4 ) incorporated in the flame of an oxyhydrogen torch (Fig. 2) for the formation of a compressive silica/titania layer on an optical fibre by a glass soot deposition and sintering process.

    Abstract translation: 为了消除水侵蚀二氧化硅光纤的效果,纤维设置有氮化硅或氮氧化硅的表面层。 所提出的方法包括直接氮化。 这可以通过将氮化气氛添加到拉丝炉气体(图1)中或添加到氢氧焰(图2)的火焰中的反应气体(TiCl4和SiCl4)以形成压缩二氧化硅 /二氧化钛层通过玻璃烟灰沉积和烧结工艺而形成在光纤上。

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