Surface treatments for optical fibre preforms
    7.
    发明公开
    Surface treatments for optical fibre preforms 失效
    Oberflächenbehandlungenfüroptische Lichtleitfaservorformen。

    公开(公告)号:EP0266889A1

    公开(公告)日:1988-05-11

    申请号:EP87308639.1

    申请日:1987-09-29

    IPC分类号: C03C25/02 C03C13/04

    摘要: Halide fibres are protected by coatings up to 2µm 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 etched by directing a stream of inert ions at it. Most suitably the etching immediately precedes the coating.

    摘要翻译: 卤化物纤维受到厚达2微米厚的硫族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。 通过离子沉积溅射将涂层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蚀刻预制件。 最适当地,蚀刻紧接在涂层之前。

    Chalcogenide glass optical fibre
    10.
    发明公开
    Chalcogenide glass optical fibre 失效
    Optische Faser aus Halcogenidglas

    公开(公告)号:EP0849234A3

    公开(公告)日:1998-09-30

    申请号:EP98104164.3

    申请日:1996-03-06

    IPC分类号: C03C13/04

    摘要: A process for producing a preform for a chalcogenide glass fiber which comprises inserting a cladding tube having contained therein a chalcogenide glass rod for core into a quartz tube having at its bottom a nozzle having an aperture smaller than the outer diameter of the cladding tube, locally heating the bottom of the quartz tube and pulling the cladding tube having contained the glass rod for core and a process for producing a chalcogenide glass fiber by heating and drawing the preform thus obtained, by which processes the devitrification of glass and the generation of bubbles in the core glass or at the core glass-cladding glass interface can be prevented and the adhesion between the core glass and the cladding glass can be improved. In particular, when the glass material for core does not contain Ge, a chalcogenide glass fiber having such a core-cladding structure that the transmission loss of the glass fiber when infrared light pass through the fiber is small and the mechanical strength is high.

    摘要翻译: 一种硫属化物玻璃纤维预成型体的制造方法,其特征在于,将包含核心的硫属化物玻璃棒的包覆管插入石英管,所述石英管的底部具有孔径小于包层管的外径的喷嘴, 加热石英管的底部并拉动预制件,通过所述石英管的喷嘴将所述包层管和芯的玻璃棒合成。 还公开了通过加热和拉伸所得到的预成型体来生产硫族化物玻璃纤维的方法,通过该方法可以防止玻璃的失透和芯玻璃或核心玻璃 - 包层玻璃界面中的气泡产生,并且 可以提高芯玻璃与包层玻璃之间的粘合性。 特别是,当核心用玻璃材料不含Ge时,具有这样的芯 - 包层结构的硫族化物玻璃纤维,当红外光通过纤维时,玻璃纤维的透射损失小,机械强度高。