Method for the preparation of halide glass articles
    2.
    发明授权
    Method for the preparation of halide glass articles 失效
    卤化物玻璃制品的制备方法

    公开(公告)号:US5334232A

    公开(公告)日:1994-08-02

    申请号:US983854

    申请日:1993-03-04

    摘要: Halide glass articles, e.g. rods, tubes and preforms for making fluoride glass fibres, are prepared by melting and/or casting the articles under a low pressure, e.g. 0.01 to 500 mbars and, during the low pressure regime, a gas flow rate of between 0.01 to 100 liters/min (measured at NTP) is maintained. It has been found that subjecting the melts to a low pressure reduces the attenuation of the fibre which eventually results from the melts.

    摘要翻译: PCT No.PCT / GB91 / 01122 Sec。 371日期:1993年3月4日 102(e)1993年3月4日PCT PCT 1991年7月9日PCT公布。 出版物WO92 / 00923 日期:1992年1月23日。 用于制造氟化物玻璃纤维的棒,管和预成型件通过在低压下熔融和/或浇铸制品来制备,例如, 0.01至500毫巴,而在低压状态下,维持0.01至100升/分钟之间(在NTP测量)的气体流速。 已经发现,使熔体经受低压降低了最终由熔体产生的纤维的衰减。

    Glasses and methods for making them
    6.
    发明授权
    Glasses and methods for making them 失效
    眼镜和制作它们的方法

    公开(公告)号:US4552850A

    公开(公告)日:1985-11-12

    申请号:US446401

    申请日:1982-12-02

    IPC分类号: C03C13/02 C03C13/04 C03C13/00

    CPC分类号: C03C13/046 Y10S501/903

    摘要: A glass suitable for use in optical fibre cores has a refractive index of 1.540-1.610, Na.sub.2 O and B.sub.2 O.sub.3 in a molar ratio of 1.05-2:1, 2-12 mole percent BaO, 40-63 mole percent SiO.sub.2, and 1.5-15 mole percent ZrO.sub.2, the proportion of SiO.sub.2 and ZrO.sub.2 together not exceeding 65 mole percent. The glass can be prepared in a highly reduced state by the use of CO and a redox buffering agent. The glass is especially suitable for the production of high numerical aperture wide cored fibres.

    摘要翻译: 适合用于光纤芯的玻璃的折射率为1.540-1.610,Na2O和B2O3的摩尔比为1.05-2:1,2-12摩尔%的BaO,40-63摩尔%的SiO 2和1.5-15 摩尔%的ZrO 2,SiO 2和ZrO 2的比例不超过65摩尔%。 可以通过使用CO和氧化还原缓冲剂在高度还原状态下制备玻璃。 该玻璃特别适用于生产高数值孔径宽芯纤维。