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    Preparation of parent material for fluoride glass fiber
    172.
    发明专利
    Preparation of parent material for fluoride glass fiber 失效
    用于氟化玻璃纤维的母材的制备

    公开(公告)号：JPS61127634A

    公开(公告)日：1986-06-14

    申请号：JP24815884

    申请日：1984-11-26

    Applicant: Fujikura Ltd

    Inventor： SHIODA TAKAO ,  HIDAKA HIROMI ,  FUKUDA TAKERU ,  INADA KOICHI

    IPC: C03C13/04 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  G02B6/00

    CPC classification number: C03B37/01268 ,  C03B2201/82

    Abstract: PURPOSE:To enable preparation of a parent material for fluoride glass fiber having superior characteristics by mixing >= two kinds of organometallic compd. contg. no oxygen in gaseous phase and heating the mixture in F2 or in a gaseous F-compd. CONSTITUTION:Organometallic compds. such as Al(CH3)3, AlC(C2H5)3, B(CH3)3, PbC(C2H5)4, Pb(C2H5)4, Sb(CH3)3, etc. are purified by distillation, then mixed in a specified proportion in gaseous phase. Simultaneously, the mixture heated with F2 or an F-contg. compd. such as CCl2F2, etc., at 900 deg.C is brought into reaction and vitrification. The molten glass is performed by casting to obtain a parent material for fluoride glass fiber which is drawn to prepare the glass fiber. Thus, a parent material for fluoride glass fiber contg. no impurities such as O2 or H2, nor oxide, and having superior characteristics is prepared stably.

    Abstract translation: 目的：通过混合> =两种有机金属化合物，可以制备具有优异特性的氟化物玻璃纤维的母体材料。 对比 在气相中不含氧气，并在F2或气态F-compd中加热混合物。 构成：有机金属化合物 例如Al（CH3）3，AlC（C2H5）3，B（CH3）3，PbC（C2H5）4，Pb（C2H5）4，Sb（CH3）3等）通过蒸馏纯化， 气相比例。 同时，将混合物用F2或F-contg加热。 compd。 如CCl 2 F 2等，在900℃下进行反应和玻璃化。 熔融玻璃通过铸造进行，以获得用于制备玻璃纤维的氟化物玻璃纤维的母体材料。 因此，氟化物玻璃纤维的母体材料 不能稳定地制备O 2或H 2等杂质，也不含氧化物，具有优异的特性。

    Preparation of parent material for optical fiber by dropping and rotation
    174.
    发明专利
    Preparation of parent material for optical fiber by dropping and rotation 失效
    通过抛光和旋转制备光纤的母材

    公开(公告)号：JPS5964540A

    公开(公告)日：1984-04-12

    申请号：JP17446482

    申请日：1982-10-06

    Applicant: Nippon Telegr & Teleph Corp

    Inventor： MITACHI NARIYUKI ,  OOISHI YASUTAKE ,  MIYASHITA TADASHI

    IPC: C03B37/014 ,  C03B19/02 ,  C03B19/04 ,  C03B37/012 ,  G02B6/00

    CPC classification number: C03B37/01271 ,  C03B37/01268 ,  C03B2201/82

    Abstract: PURPOSE:Preparation of a parent material for optical fiber of fluoride glass, wherein a core-clad interface is formed smoothly, every layer is deposited one by one by every drop, quenching effect can be expected, infrared rays with short wavelength can be transmitted, and extreme reduction in loss is possible. CONSTITUTION:While a metallic or semimetallic template having a cylindrical hollow part and a structure capable of being split into plural parts in the longitudinal direction is being rotated, droplets of glass melt are made to fall on the hollow part of the template, the composition of the glass melt is changed, so that refractive index of glass made during solidification of the droplets is changed, to give a parent material for optical fiber having a core-clad wave transmission structure. The cover 2 is put on the crucible 1 made of gold (platinum), the crucible 1 is evacuated, and the droplets 8 glass for clad are dropped at a proper speed. The template 9 of three split parts is fastened, and fixed to the rotary stand 13 by the template holder 12. A thin film of glass forced up to the wall face of the template by centrifugal force is gradually piled to form the glass raw film 20.

    Abstract translation: 目的：制备氟化玻璃光纤的母材，其中芯包层界面平滑地形成，每层逐滴沉积，淬火效果可以预期，可以传输短波长的红外线， 并且可以极大地减少损失。 构成：当具有圆柱形中空部分的金属或半金属模板和能够在纵向方向上分成多个部分的结构旋转时，玻璃熔体的液滴被落在模板的中空部分上，组成 改变玻璃熔体，使得在液滴固化期间制成的玻璃的折射率改变，得到具有芯包覆波传输结构的光纤的母材。 将盖2放在由金（铂）制成的坩埚1上，将坩埚1抽真空，并且用于包层的玻璃8以适当的速度下落。 将三个分割部分的模板9紧固并通过模板保持器12固定到旋转支架13.通过离心力迫使模板壁面的玻璃薄膜逐渐堆积以形成玻璃原始薄膜20 。

    Manufacture of preform for optical fiber transmitting infrared ray
    176.
    发明专利
    Manufacture of preform for optical fiber transmitting infrared ray 失效
    光纤传输红外雷达预制件的制造

    公开(公告)号：JPS5738336A

    公开(公告)日：1982-03-03

    申请号：JP11175780

    申请日：1980-08-15

    Applicant: Nippon Telegr & Teleph Corp

    Inventor： MITACHI NARIYUKI ,  MANABE TOYOTAKA ,  SHIBATA SHIYUUICHI

    IPC: C03B37/014 ,  C03B37/012 ,  C03C3/32 ,  C03C4/10 ,  G02B6/00

    CPC classification number: C03B37/01268 ,  C03B2201/82

    Abstract: PURPOSE:To obtain a preform for an optical fiber transmitting infrared rays by fixing a fluoride glass rod at the center of the cylindrical hollow part of a mold splittable into a plurality of segments, pouring molten fluoride glass in the gap between the outer frame of the mold and the rod, and slowly cooling the glass after annealing. CONSTITUTION:A fluoride glass rod 7 is fixed at the center of the cylindrical hollow part 6 of the mold formed with an outer frame 1 vertically splittable into a plurality of segments and forming the part 6, and after preheating the rod 7 at a temp. below the transition temp. of fluoride glass, molten fluoride glass having a lower refractive index than the rod 7 is poured in the gap between the frame 1 and the rod 7. The mold is then maintained at a temp. below the transition temp. of the fluoride glass to anneal the glass, and it is slowly cooled. After the cooling the frame 1 is detached to obtain a preform for an optical fiber transmitting infrared rays.

    Abstract translation: 目的：通过将氟化玻璃棒固定在可分割成多个段的模具的圆柱形中空部分的中心处，以获得透射红外线的光纤的预成型件，将熔融氟化物玻璃浇注在 模具和棒，退火后缓慢冷却玻璃。 构成：将氟化玻璃棒7固定在模具的圆筒状中空部6的中央，形成有能够垂直分割成多个片段的外框1，形成部6， 低于过渡温度 氟化物玻璃的折射率低于棒7的熔融氟化物玻璃被浇注在框架1和杆7之间的间隙中。然后将模具保持在温度 低于过渡温度 的氟化物玻璃退火玻璃，并缓慢冷却。 在冷却之后，拆卸框架1以获得用于发射红外线的光纤的预成型件。

    HOLEY OPTICAL FIBRES OF NON-SILICA BASED GLASS
    180.
    发明公开
    HOLEY OPTICAL FIBRES OF NON-SILICA BASED GLASS 审中-公开
    富士OPTISCHE FASERN AUS NICHT AUF SILICIUMDIOXID BASIERENDEM GLAS

    公开(公告)号：EP1313676A1

    公开(公告)日：2003-05-28

    申请号：EP01956671.0

    申请日：2001-08-13

    Applicant: UNIVERSITY OF SOUTHAMPTON

    Inventor： BRODERICK, Neil, Gregory, Raphael ,  HEWAK, Daniel, William,University of Southampton ,  MONRO, Tanya, Mary,University of Southampton ,  RICHARDSON, David, John,University of Southampton ,  WEST, Yvonne, Deana,University of Southampton

    IPC: C03C13/04 ,  C03B37/012 ,  G02B6/20

    CPC classification number: G02B6/02347 ,  C03B37/01205 ,  C03B37/0122 ,  C03B2201/60 ,  C03B2201/62 ,  C03B2201/70 ,  C03B2201/78 ,  C03B2201/80 ,  C03B2201/82 ,  C03B2201/83 ,  C03B2201/84 ,  C03B2201/86 ,  C03B2201/88 ,  C03B2203/14 ,  C03B2203/42 ,  C03C13/04 ,  C03C13/041 ,  C03C13/046 ,  C03C13/048 ,  C03C25/106 ,  C03C25/1062 ,  G02B6/02361

    Abstract: To overcome problems of fabricating conventional core-clad optical fibre from non-silica based (compound) glass, it is proposed to fabricate non-silica based (compound) glass optical fibre as holey fibre i.e. one contining Longitudinal holes in the cladding. This removes the conventional problems associated with mismatch of the physical properties of the core and clad compound glasses, since a holey fibre can be made of a single glass composition. With a holey fibre, it is not necessary to have different glasses for the core and cladding, since the necessary refractive index modulation between core and cladding is provided by the microstructure of the clad, i.e. its holes, rather than by a difference in materials properties between the clad and core glasses. Specifically, the conventional thermal mismatch problems between core and clad are circumvented. A variety of fibre types can be fabricated from non-silica based (compounds) glasses, for example: single-mode fibre; photonic band gap fibre; highly non-linear fibre; fibre with photosensitivity written gratings and other refractive index profile structures; and rare-earth doped fibres (e.g. Er, Nd, Pr) to provide gain media for fibre amplifiers and lasers.

    Abstract translation: 为了克服从非二氧化硅（复合）玻璃制造常规的包芯光纤的问题，提出了制造非二氧化硅基（复合）玻璃光纤作为多孔纤维，即在包层中连续的纵向孔。 这消除了与芯和包覆复合玻璃的物理性能失配相关的常规问题，因为多孔纤维可以由单一玻璃组合物制成。 使用多孔纤维，由于芯和包层之间必需的折射率调制是通过包层的微结构（即其孔）而不是材料性质的差异来提供的，因此不需要具有用于芯和包层的不同的玻璃 在包层和核心眼镜之间。 具体来说，芯和包层之间常规的热失配问题被规避。 各种纤维类型可以由非二氧化硅（化合物）玻璃制成，例如：单模纤维; 光子带隙光纤; 高度非线性的纤维; 具有感光性的光纤写入光栅和其他折射率分布结构; 和稀土掺杂光纤（例如Er，Nd，Pr），为光纤放大器和激光器提供增益介质。

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