OPTICAL FIBER
    21.
    发明申请
    OPTICAL FIBER 有权
    光纤

    公开(公告)号:US20160147010A1

    公开(公告)日:2016-05-26

    申请号:US14943190

    申请日:2015-11-17

    IPC分类号: G02B6/02

    摘要: An optical fiber containing an alkali metal and capable of reducing Rayleigh scattering loss is provided. An optical fiber has a core and a cladding made of silica glass and enclosing the core. The cladding contains fluorine and has a refractive index lower than the refractive index of the core. The core contains first group dopants selected from the group of Na element, K element, or a compound thereof at an average concentration of 0.2 ppm or more and 10 ppm or less. The core also contains second group dopants for reducing the viscosity of silica glass and having a diffusion coefficient of 1×10−12 cm2/s or more and smaller than the diffusion coefficient of the first group dopants, by an average concentration of 0.2 ppm or more at a temperature of 2000° C. to 2300° C.

    摘要翻译: 提供含有碱金属并能够降低瑞利散射损失的光纤。 光纤具有由石英玻璃制成的芯和包层,并且包围芯。 包层含氟,折射率低于芯的折射率。 核心包含平均浓度为0.2ppm以上且10ppm以下的选自Na元素,K元素或其化合物的第一族掺杂剂。 该芯还含有第二组掺杂剂,用于降低石英玻璃的粘度,并且扩散系数为1×10-12cm2 / s以上且小于第一组掺杂剂的扩散系数,平均浓度为0.2ppm或 更高温度在2000°C至2300°C

    Method for forming fused silica glass using multiple burners
    23.
    发明授权
    Method for forming fused silica glass using multiple burners 有权
    使用多个燃烧器形成熔融石英玻璃的方法

    公开(公告)号:US08230701B2

    公开(公告)日:2012-07-31

    申请号:US12154908

    申请日:2008-05-28

    IPC分类号: C03B37/018

    摘要: A method for forming a silica glass blank includes generating soot using an array of soot producing burners, directing the soot along a first direction onto a bait, collecting the soot on the bait, imparting relative oscillatory motion having a repeat period between the array of soot producing burners and the bait along a second direction orthogonal to the first direction while collecting the soot, and offsetting the relative oscillatory motion by a selected distance along the second direction after each repeat period.

    摘要翻译: 一种用于形成二氧化硅玻璃坯料的方法包括使用产生烟炱的燃烧器阵列产生烟灰,将烟尘沿第一方向引导到诱饵上,将烟炱收集在诱饵上,赋予在烟炱阵列之间具有重复周期的相对振荡运动 在收集烟灰的同时沿着与第一方向正交的第二方向产生燃烧器和诱饵,并且在每个重复周期之后沿着第二方向将相对振荡运动偏移选定的距离。

    APPARATUS AND METHOD FOR MANUFACTURING GLASS PREFORM
    24.
    发明申请
    APPARATUS AND METHOD FOR MANUFACTURING GLASS PREFORM 审中-公开
    用于制造玻璃预制件的装置和方法

    公开(公告)号:US20110314874A1

    公开(公告)日:2011-12-29

    申请号:US13165236

    申请日:2011-06-21

    申请人: Takayuki KITAMURA

    发明人: Takayuki KITAMURA

    IPC分类号: C03B37/018

    摘要: An apparatus for manufacturing a glass perform, includes: a dummy tube section, a reservoir portion, and a cooling portion; and a glass tube section in which particles of an alkali metal compound or an alkaline earth metal compound which have flowed into the glass tube section from the dummy tube section are heated by a second heat source which performs traverse, and oxides of the particles being deposited on an inner wall and dispersed in the glass tube section. In the cooling portion of the dummy tube section, vapor of the alkali metal compound or the alkaline earth metal compound generated by heating of a first heat source is cooled and condensed by a dry gas flowing into the dummy tube section, and thereby the particles are generated.

    摘要翻译: 一种玻璃制造装置,包括:虚拟管部,储存部和冷却部; 以及玻璃管部分,其中由虚拟管部分流入玻璃管部分的碱金属化合物或碱土金属化合物的颗粒被进行横越的第二热源加热,并且沉积的颗粒的氧化物 在内壁上分散在玻璃管部分。 在虚拟管部的冷却部中,通过第一热源的加热而产生的碱金属化合物或碱土金属化合物的蒸气被流入虚拟管部的干燥气体冷却并冷凝, 生成。

    Active single mode optical fibres and method for their fabrication
    27.
    发明授权
    Active single mode optical fibres and method for their fabrication 失效
    主动单模光纤及其制造方法

    公开(公告)号:US5991486A

    公开(公告)日:1999-11-23

    申请号:US962371

    申请日:1997-10-31

    申请人: Marco Braglia

    发明人: Marco Braglia

    摘要: An active single-mode optical fiber has the core made of a rare earth doped non-oxide glass and the cladding made of an oxide glass. The glass of the core has a melting temperature lower than that of the glass of the cladding and lying within the range of the softening temperatures of the latter. In a preferred embodiment the core is made of a chalcogenide glass and the cladding is made of a lead silicate glass. To produce the fiber, a preform, obtained by introducing an element made of the non-oxide glass into the hole of a capillary tube made of the oxide glass, is brought to a temperature lying within the range of softening temperatures of the oxide glass and not lower than the melting temperature of the non-oxide glass, and is drawn. The capillary tube, during the drawing process, serves as a container for the molten glass of the core.

    摘要翻译: 有源单模光纤具有由稀土掺杂的非氧化物玻璃制成的芯和由氧化物玻璃制成的包层。 芯的玻璃的熔融温度低于包层玻璃的熔化温度,并且处于软化温度的范围内。 在优选实施例中,芯由硫族化物玻璃制成,并且包层由硅酸铅玻璃制成。 为了制造纤维,通过将由非氧化物玻璃制成的元件引入到由氧化物玻璃制成的毛细管的孔中而获得的预成型体达到处于氧化物玻璃的软化温度范围内的温度, 不低于非氧化物玻璃的熔融温度,并被拉伸。 毛细管在拉伸过程中用作芯的熔融玻璃的容器。