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    Sol-gel process for fabricating germanium-doped silica article
    4.
    发明公开
    Sol-gel process for fabricating germanium-doped silica article 有权
    Sol-Gel-Verfahren zur Herstellung eines mit锗dotierten Quarzglasartikel

    公开(公告)号：EP1167308A1

    公开(公告)日：2002-01-02

    申请号：EP01300295.1

    申请日：2001-01-15

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Bhandarkar, Suhas ,  McNally, Frank J. ,  Putvinski, Thomas M.

    IPC: C03C1/00 ,  C03C3/06 ,  C03B19/12 ,  C01G17/02

    CPC classification number: C03C1/006 ,  C01G17/02 ,  C03B19/12 ,  C03B2201/31 ,  C03C3/06 ,  C03C2201/31 ,  C03C2203/22 ,  Y10S65/901

    Abstract: A sol-gel process for fabricating bulk, germanium-doped silica bodies useful for a variety of applications, including core rods, substrate tubes, immediate overcladding, pumped fiber lasers, and planar waveguides, is provided. The process involves the steps of providing a dispersion of silica particles in an aqueous quaternary ammonium germanate solution - typically tetramethylammonium germanate, gelling the dispersion to provide a gel body, and drying, heat treating, and sintering the body to provide the germanium-doped silica glass.
    A process for fabricating germanium dioxide is also described.

    Abstract translation: 提供了用于制造用于各种应用的体积为锗掺杂的二氧化硅体的溶胶 - 凝胶方法，包括芯棒，衬底管，立即外包层，泵浦光纤激光器和平面波导。 该方法包括以下步骤：将二氧化硅颗粒的分散体提供在水性季铵化锗酸盐溶液（通常为四甲基铵锗酸盐）中，使分散体胶凝以提供凝胶体，并干燥，热处理和烧结体以提供锗掺杂二氧化硅 玻璃。 还描述了制造二氧化锗的方法。

    Process for fabricating sol-gel article involving low-shrinkage formulation
    5.
    发明公开
    Process for fabricating sol-gel article involving low-shrinkage formulation 有权
    一种用于从具有低收缩率的制剂制备的溶胶 - 凝胶制品的方法

    公开(公告)号：EP1215180A1

    公开(公告)日：2002-06-19

    申请号：EP01305477.0

    申请日：2001-06-25

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Bhandarkar, Suhas ,  Fleming, Debra Anne ,  Johnson Jr., David Wilfred

    IPC: C03C1/00 ,  C03B8/02

    CPC classification number: C03B19/12 ,  C03C1/006

    Abstract: A silica sol-gel fabrication process is provided which allows improved control of the shrinkage that takes place during the drying of a gel body. In particular, the invention makes it possible to attain extremely low shrinkage through the completion of the drying stage, e.g., below 1% linear shrinkage, in relatively large sol-gel bodies of (dry weight) 1 kg or more, typically 10 kg or more, or even 40 kg or more, compared to the much higher shrinkages typically encountered. Specifically, use of a particular polymeric additive makes it possible for a gel body to experience linear shrinkage at least 55% less than an identical process without the polymeric additive.

    Abstract translation: 本发明提供一种二氧化硅的溶胶 - 凝胶的制造工艺，其允许改进的收缩的控制发生的凝胶体的干燥过程中发生一样。 特别地，本发明使得有可能通过干燥阶段完成达到极低的收缩率，例如，低于1％的线性收缩率（干重）相对较大的溶胶 - 凝胶体1 kg或更高，通常为10千克或 更多，或甚至40公斤以上，相比于典型地遇到的高得多的收缩。 具体而言，使用特定的聚合物添加剂的使得能够对凝胶体经历线性收缩比在相同的工艺少至少55％，而不聚合物添加剂。

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