MANUFACTURE OF SYNTHETIC SILICA GLASS
    203.
    发明申请
    MANUFACTURE OF SYNTHETIC SILICA GLASS 审中-公开
    合成二氧化硅玻璃的制造

    公开(公告)号:WO2011107430A1

    公开(公告)日:2011-09-09

    申请号:PCT/EP2011/052923

    申请日:2011-02-28

    Abstract: Methods are described for manufacturing silica-based glass, in which silica precursor material is supplied to a synthesis flame in the form of an emulsion. The methods involve the steps of: forming an emulsion of an aqueous phase in a non-aqueous liquid silica precursor material; supplying the emulsion as a spray of droplets into a synthesis flame, whereby the precursor material is converted in the flame into a silica-containing soot; and collecting the soot on a substrate, either as a porous soot body for subsequent consolidation to glass or directly as a substantially pore-free glass.

    Abstract translation: 描述了用于制造二氧化硅基玻璃的方法,其中将二氧化硅前体材料以乳液的形式供应到合成火焰。 所述方法包括以下步骤:在非水液体二氧化硅前体材料中形成水相乳液; 将乳液作为液滴的喷雾供应到合成火焰中,由此将前体材料在火焰中转化为含二氧化硅的烟灰; 并将烟灰收集在基底上,作为多孔烟灰体,用于随后固结到玻璃上,或者直接作为基本上无孔的玻璃。

    AN IMPROVED METHOD FOR FABRICATING RARE EARTH (RE) DOPED OPTICAL FIBER USING A NEW CODOPANT
    205.
    发明申请
    AN IMPROVED METHOD FOR FABRICATING RARE EARTH (RE) DOPED OPTICAL FIBER USING A NEW CODOPANT 审中-公开
    使用新的CODOPANT制造稀土(RE)掺杂光纤的改进方法

    公开(公告)号:WO2010109494A3

    公开(公告)日:2010-12-09

    申请号:PCT/IN2010000201

    申请日:2010-03-29

    Abstract: The present invention provides a method of making rare earth (RE) doped optical fiber using BaO as co-dopant instead of Al or P commonly used for incorporation of the RE in silica glass by MCVD and solution doping technique. The method comprises deposition of particulate layer of GeO2 doped SiO2 with or without small P2O5 for formation of the core and solution doping by soaking the porous soot layer into an aqueous solution of RE and Ba containing salt. This is followed by dehydration and sintering of the soaked deposit, collapsing at a high temperature to produce the preform and drawing of fibers of appropriate dimension. The use of Ba-oxide enables to eliminate unwanted core-clad interface defect which is common in case of Al doped fibers. The fibers also show good RE uniformity, relatively low optical loss in the 0.6-1.6 µm wavelength region and good optical properties suitable for their application in amplifiers, fiber lasers and sensor devices.

    Abstract translation: 本发明提供一种使用BaO作为共掺杂剂代替通常用于通过MCVD和溶液掺杂技术将石英玻璃中的RE掺入的Al或P的掺杂稀土(RE)掺杂光纤的方法。 该方法包括沉积具有或不具有小的P 2 O 5的GeO 2掺杂的SiO 2的颗粒层以形成芯并通过将多孔烟灰层浸入含RE和Ba的盐的水溶液中来进行溶液掺杂。 随后将浸渍的沉积物脱水和烧结,在高温下塌陷以制备预制件并拉出适当尺寸的纤维。 使用Ba氧化物能够消除在Al掺杂光纤的情况下常见的不需要的芯包层界面缺陷。 纤维也表现出良好的均匀性,0.6-1.6μm波长区域的光损耗相对较低,适用于放大器,光纤激光器和传感器装置的光学特性良好。

    METHOD FOR MANUFACTURING OPTICAL FIBER PREFORM INCLUDING DEHYDRATION PROCESS BY PHOTOCHEMICAL REACTION
    207.
    发明申请
    METHOD FOR MANUFACTURING OPTICAL FIBER PREFORM INCLUDING DEHYDRATION PROCESS BY PHOTOCHEMICAL REACTION 审中-公开
    通过光化学反应制造脱水工艺的光纤预制件的方法

    公开(公告)号:WO2004043870A1

    公开(公告)日:2004-05-27

    申请号:PCT/KR2003/002209

    申请日:2003-10-21

    Abstract: A method for manufacturing an optical fiber preform including a dehydration process by photochemical reaction is provided. The method performs forming a clad and a core according to a predetermined refractive index profile by repeated deposition and sintering of soot particles by means of oxidation of soot generation gas, and a dehydration step for removing moisture and hydroxyl groups from a soot deposition region by means of photochemical reaction is executed between the deposition and sintering. The dehydration step activates dehydration gas into ionic or atomic state by irradiating light, in a wavelength range capable of inducing activation of the dehydration gas, from light source to the dehydration gas including chlorine and supplied to the soot deposition region, and then adsorbs the activated dehydration gas onto surface of the soot in order to induce dehydration reaction with moisture or hydroxyl groups.

    Abstract translation: 提供了一种通过光化学反应制造包括脱水过程的光纤预制件的方法。 该方法通过烟灰发生气体的氧化反复沉积和烧结烟灰颗粒,根据预定的折射率分布形成包层和芯,以及通过手段从烟灰沉积区域除去水分和羟基的脱水步骤 在沉积和烧结之间进行光化学反应。 脱水步骤通过在能够引起脱水气体的激活的波长范围内从光源向包括氯的脱水气体照射光并将其供应到烟灰沉积区域,将脱水气体激活成离子或原子状态,然后吸附活化的 将烟气脱气到烟灰表面,以引起与水分或羟基的脱水反应。

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