METHOD OF CONTROLLING FLUORINE DOPING IN SOOT PREFORMS
    38.
    发明公开
    METHOD OF CONTROLLING FLUORINE DOPING IN SOOT PREFORMS 审中-公开
    VERFAHREN ZUR REGELUNG DER FLUORDOTIERUNG VON RUSSVORFORMEN

    公开(公告)号:EP1181253A4

    公开(公告)日:2004-12-15

    申请号:EP00914850

    申请日:2000-03-07

    Applicant: CORNING INC

    Abstract: A method for controlling the refractive index achieved using a fluorine dopant gas, wherein CF4 is employed as the dopant gas, and the soot preform (12) is doped using the CF4 for a time and temperature sufficient to result in a decrease in fluorine dopant nearest the surface which is in contact with the CF4 gas. Preform (12) is mounted on handle (11) which is fused to handle (14) and the assembly (20) is heated in a furnace muffle (15). The CF4 flows through furnace muffle (15), as indicated by arrows (17), and preferably contains a diluent gas such as helium. An optional centerflow gas (16) may be flowed through the centerline hole (18) in several embodiments, which consists of helium. The end of the porous preform (12) may optionally include a capillary tube (19) to prevent the muffle gases (17) from entering the preform.

    Abstract translation: 控制使用氟掺杂剂气体实现的折射率的方法,其中使用CF 4作为掺杂剂气体,并且使用CF 4掺杂烟灰预制体足够的时间和温度,以使得最接近表面的氟掺杂剂减少 与CF4气体接触。

    ULTRALOW-LOSS SILICA GLASS AND OPTICAL FIBERS MADE USING THE SAME
    39.
    发明公开
    ULTRALOW-LOSS SILICA GLASS AND OPTICAL FIBERS MADE USING THE SAME 失效
    与ULTRANIEDRIEGEM损失及使用产生的同一光纤石英玻璃

    公开(公告)号:EP0915065A4

    公开(公告)日:1999-09-29

    申请号:EP97930777

    申请日:1997-07-14

    Abstract: A ultralow-loss silica glass characterized by comprising a high-purity silica glass and at least one network-modifying oxide in an amount of 1 to 500 ppm (by weight). The oxide is considered to suitably relax the tetrahedral network structure of silica so as to lower the Rayleigh scattering loss. Examples of the network modifying oxides usable herein include Na>2 2 2

    Abstract translation: 这种超低损耗玻璃DASS特点高纯度二氧化硅玻璃中含有1至500重量ppm的至少一个网络修饰氧化物的。 假定做了网络修饰氧化物适当地松开因此降低二氧化硅和瑞利散射的四面体的网络结构。 网络改性氧化物的实例包括的Na 2 O,K 2 O,的Li2O,MgO的,氧化钙,及PbO。 由于瑞利散射损耗与这些高纯度的二氧化硅玻璃的比较是最小的,这添加杂质的石英玻璃作为优良的玻璃纤维的用于长距离传输的基材。

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