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    • 5. 发明专利
    • Production of optical fiber preform
    • 光纤预制件的生产
    • JPS6191031A
    • 1986-05-09
    • JP21089484
    • 1984-10-08
    • Hitachi Cable Ltd
    • NIIZAWA MASAHARUYABUKI TSUTOMUNARITA YOSHIHIRO
    • G02B6/00C03B37/012C03B37/014
    • C03B37/01282
    • PURPOSE:To obtain a stepped optical fiber preform having excellent uniformity of refractive index, by depositing glass soot to the tip of a target from raw material gas under different conditions, and forming the uniform mixture of the glass soot. CONSTITUTION:The raw material gas consisting of a halide (SiCl4) is made to react with a dopant gas for refractive index control (GeCl4) in an oxyhydrogen flame, and glass soot having varying ratio of the dopant gas to the raw material gas is deposited to the tip of a target. The deposit is pulverized, mixed uniformly, and formed in the desired form to obtain a porous preform. The porous preform is sintered by a conventional method to obtain a transparent glass preform.
    • 目的:为了获得具有优异的折射率均匀性的阶梯式光纤预制棒,通过在不同条件下从原料气体中将玻璃烟灰沉积到靶材的尖端,并形成玻璃烟灰的均匀混合物。 构成:使由卤化物(SiCl 4)组成的原料气体与氢氧焰中的用于折射率控制的掺杂剂气体(GeCl 4)反应,并且沉积掺杂气体与原料气体的比例变化的玻璃烟炱 到目标的尖端。 将沉积物粉碎,均匀混合并以所需形式形成,以获得多孔预成型体。 通过常规方法烧结多孔预成型件以获得透明玻璃预成型体。
    • 6. 发明专利
    • Control of distribution of refractive index in glass
    • 玻璃中折射率分布的控制
    • JPS57123837A
    • 1982-08-02
    • JP774581
    • 1981-01-21
    • Furukawa Electric Co Ltd:The
    • SHIBUYA SEIJISATOU TSUGIO
    • C03B20/00C03B37/012G02B6/00
    • C03B37/01282
    • PURPOSE:To control distribution of refractive index in glass simply in a short time with the high yield of oxide powder, by forming oxide powder in slurry state into plural formed powder articles, bringing one of them contact with the other, followed by making them into glass. CONSTITUTION:The tubular structural materials 11 and 12 having small and large diameter are superimposed concentrically, and the closing cover 2 is attached to the bottoms of both the materials. To the spaces 31 and 32 thus prepared a uniform slurry obtained by adding the quartz type oxide powder 41 and 42 to a solvent such as ethanol, etc. are fed. The powder 41 and 42 are produced by VAD process, and consist of SiO2 as a glass main component and a subsidiary component (dope agent) for setting a refractive index. After the formed powder articles 51 and 52 are thus prepared, the structural material 11 is removed, both the formed articles are brought into contact with each other and kept for a fixed time. During this period, a composition exchange, wherein the formed articles 51 and 52 are mixed each other, occurs. When the concentration of the dope agent becomes the desired distribution, the formed articles 51 and 52 are freeze dried to stop the composition exchange, and they are heat-treated at high temperature.
    • 目的:为了在短时间内以高产率的氧化物粉末控制玻璃中的折射率分布,通过将浆料状态的氧化物粉末形成多个成形的粉末制品,使它们中的一个与另一个接触,然后使其成为 玻璃。 构成:具有小直径和大直径的管状结构材料11和12同心地重叠,并且封闭盖2附接到这两种材料的底部。 向这样制备的空间31,32中加入石英型氧化物粉末41和42,加入溶剂如乙醇等得到的均匀浆料。 粉末41和42由VAD工艺制成,由SiO 2作为玻璃主要组分和用于设定折射率的辅助组分(掺杂剂)组成。 在这样制备成形的粉末制品51和52之后,将结构材料11去除,两个成形制品彼此接触并保持一定时间。 在此期间,发生组合物交换,其中形成的物品51和52彼此混合。 当掺杂剂的浓度变为所需分布时,将成形品51和52冷冻干燥以停止组合物更换,并在高温下进行热处理。
    • 10. 发明专利
    • Method for producing preform for photonic crystal fiber, and method for producing photonic crystal fiber
    • 用于制造光学晶体纤维的预制件的方法和用于制造光子晶体纤维的方法
    • JP2009227548A
    • 2009-10-08
    • JP2008078150
    • 2008-03-25
    • Photonic Science Technology Incフォトニックサイエンステクノロジ株式会社
    • KOBAYASHI SOICHIFUJII YUSUKE
    • C03B37/014C03B20/00C03B37/016G02B6/00G02B6/032
    • C03B37/011C03B37/01282C03B2203/14C03B2203/42
    • PROBLEM TO BE SOLVED: To provide a method for producing a preform for a photonic crystal fiber in which the structure of air holes is stable, further, collapse and roughening at the inside of the holes are prevented, and satisfactory characteristics can be obtained, and to provide a method for producing a photonic crystal fiber. SOLUTION: The method for producing the preform for the photonic crystal fiber comprises: a stage where a plurality of wire rods formed of a conductive material expanding in the radial direction by application of electric current are lined up with a prescribed arrangement at a space part of a molding die where a space of a columnar shape is formed; a stage where a silica raw material is introduced into the space part, and temporal curing is applied so as form a silica intermediate body; a stage where electric current is applied to the wire rods so as to be thermally expanded in a radial direction, thereafter, the application of the electric current is intercepted, and then, the wire rods are removed from the silica intermediate body; and a stage where the silica intermediate body is subjected to sintering treatment so as to be made into glass, in this order. COPYRIGHT: (C)2010,JPO&INPIT
    • 解决问题的方案为了提供一种空气孔结构稳定的光子晶体纤维预成型体的制造方法,还能够防止孔内部的塌陷和粗糙化,能够令人满意的特性 并提供一种制造光子晶体光纤的方法。 解决方案:用于生产光子晶体光纤预制棒的方法包括:其中通过施加电流在径向方向上扩展的导电材料形成的多个线棒在规定的布置中排列 形成柱状空间的成形模具的空间部分; 将二氧化硅原料引入空间部分的阶段,并施加锶固化以形成二氧化硅中间体; 电流被施加到线材以在径向上热膨胀的阶段,然后截断电流的施加,然后将线材从二氧化硅中间体中取出; 以及将二氧化硅中间体依次进行烧结处理以制成玻璃的阶段。 版权所有(C)2010,JPO&INPIT