Surface treatments for optical fibre preforms
    3.
    发明授权
    Surface treatments for optical fibre preforms 失效
    光纤预制棒的表面处理

    公开(公告)号:US4973345A

    公开(公告)日:1990-11-27

    申请号:US106879

    申请日:1987-10-13

    申请人: Paul W. France

    发明人: Paul W. France

    IPC分类号: C03C13/04 C03C25/10 G02B6/10

    摘要: Halide fibres are protected by coatings up to 2 .mu.m thick of chalcogenide glasses, eg glasses based on compounds of S, Se or Te with Ge or As. The coatings are deposited on the fibre preform by ion deposition sputtering. Preferably the preform is ethced by directing a stream of inert ions at it. Most suitably the etching immediately precedes the coating.

    摘要翻译: 卤化物纤维受到高达2微米厚的硫属化物玻璃的涂层保护,例如基于S,Se或Te与Ge或As的化合物的玻璃。 涂层通过离子沉积溅射沉积在纤维预制件上。 优选地,通过在其上引导惰性离子流来引导预制件。 最适当地,蚀刻紧接在涂层之前。

    Optical fibres and coatings therefor
    4.
    发明授权
    Optical fibres and coatings therefor 失效
    光纤及其涂层

    公开(公告)号:US4410567A

    公开(公告)日:1983-10-18

    申请号:US368510

    申请日:1982-04-15

    CPC分类号: B05D7/22 C03C25/104 G02B6/443

    摘要: In order to provide improved resistance to attack by atmospheric water etc. a clad glass optical fibre has a plastic coating which is in turn coated with a metal coating. The metal coating may in turn be coated with a second plastic coating. The metal coating is formed by drawing the plastic coated fibre through a globule of molten metal, the surface of which is exposed to an oxygen rich atmosphere.

    摘要翻译: 为了提供改善的耐大气水侵蚀性能,包覆玻璃光纤具有塑料涂层,其又涂覆有金属涂层。 金属涂层又可以用第二塑料涂层涂覆。 通过将塑料涂覆的纤维通过熔融金属的小球拉伸而形成金属涂层,该熔融金属的表面暴露于富氧气氛中。

    Halide fibre with high numerical aperture
    7.
    发明授权
    Halide fibre with high numerical aperture 失效
    具有高数值孔径的卤化物纤维

    公开(公告)号:US4836643A

    公开(公告)日:1989-06-06

    申请号:US151677

    申请日:1988-02-02

    IPC分类号: C03C3/32 C03C13/04

    CPC分类号: C03C3/325 C03C13/042

    摘要: A high numerical aperture optical fibre, e.g. for use in remote spectroscopy, has a cladding of a halide glass which contains Hf and a core of a halide glass which contains Pb. Preferably both glasses contain ZrF.sub.4, BaF.sub.2, LaF.sub.3, AlF.sub.3 and NaF. In addition the cladding contains HfF.sub.4 but no PbF.sub.2 and the core contains PbF.sub.2 but no HfF.sub.4.

    Testing glass fibres
    9.
    发明授权
    Testing glass fibres 失效
    测试玻璃纤维

    公开(公告)号:US4346601A

    公开(公告)日:1982-08-31

    申请号:US179085

    申请日:1980-08-18

    申请人: Paul W. France

    发明人: Paul W. France

    摘要: A method of proof testing an optical glass fibre by pulling it around a free roller whose radius is sufficiently small to impart the strain necessary to detect fibres whose surface or near surface flaws weaken the fibre below a required strength. Proof testers are disclosed incorporating, single rollers, a set of three parallel rollers and a jig holding four sets of three rollers. Proof testers incorporating the extra rollers whose axes are at different angles are shown to more thoroughly explore the surface of the fibre for cracks.

    摘要翻译: 通过将光学玻璃纤维拉绕在其半径足够小的自由辊上来测试光学玻璃纤维的方法,以赋予检测其表面或近表面缺陷使纤维弱于所需强度所需的纤维所必需的应变。 公开了证明测试器,其中包括单个辊子,一组三个平行的辊子和夹持四组三个辊子的夹具。 结合了不同角度的额外滚轮的验证测试员可以更彻底地探索纤维表面的裂纹。