ガラス母材の製造方法
    192.
    发明申请
    ガラス母材の製造方法 审中-公开
    生产玻璃矩阵的方法

    公开(公告)号:WO2009125746A1

    公开(公告)日:2009-10-15

    申请号:PCT/JP2009/057065

    申请日:2009-04-06

    Abstract:  原料ガスを酸水素火炎中で加水分解させてガラス微粒子を生成し、前記生成したガラス微粒子を堆積させて多孔質ガラス母材を形成する多孔質ガラス母材形成工程と、所望の添加物を含む化合物を添加用溶媒に溶解させた添加用溶液に前記多孔質ガラス母材を浸漬し、前記多孔質ガラス母材に前記添加用溶液を含浸させる含浸工程と、前記添加物の溶解度が前記添加用溶媒よりも小さく該添加用溶媒と混和性を有する置換用溶媒に、前記多孔質ガラス母材を前記添加用溶液が内部に残留した状態で浸漬し、前記内部に残留した添加用溶媒を置換用溶媒に置換する第一溶媒置換工程と、前記第一溶媒置換工程後に前記多孔質ガラス母材を乾燥する乾燥工程と、前記乾燥した多孔質ガラス母材を焼結して透明ガラス化する焼結工程と、を含む。これによって、添加物を効率的に添加した光ファイバ母材を製造することができる光ファイバ母材の製造方法を提供する。

    Abstract translation: 本发明公开了一种玻璃基体的制造方法,其特征在于,包括多孔玻璃基体形成工序,其中通过在氢氧焰中水解原料气体并沉积生成多孔玻璃基体的玻璃微粒而制造玻璃微粒; 浸渍步骤,其中将所述多孔玻璃基体浸入添加剂溶液中,其中将包含所需添加剂的化合物溶解在添加剂溶剂中,以用所述添加剂溶液浸渍所述多孔玻璃基质; 第一溶剂置换步骤,其中所述多孔玻璃基质浸渍,所述添加剂溶液保留在其内部,在替代溶剂中,其中所述添加剂比所述添加剂溶剂中的溶解度低,并且可与添加剂溶剂混溶, 用置换溶剂代替所述内部残留添加剂溶剂; 干燥步骤,其中所述多孔玻璃基质在所述第一溶剂置换步骤之后被干燥; 和烧结步骤,其中所述干燥的多孔玻璃基体被烧结以形成透明玻璃。 以这种方式提供了一种光纤基质制备方法,由此可以生产已经有效添加添加剂的光纤基质。

    LONG WAVELENGTH, PURE SILICA CORE SINGLE MODE FIBER AND METHOD OF FORMING THE SAME
    194.
    发明申请
    LONG WAVELENGTH, PURE SILICA CORE SINGLE MODE FIBER AND METHOD OF FORMING THE SAME 审中-公开
    长波长,纯硅芯单模光纤及其形成方法

    公开(公告)号:WO2005109055A2

    公开(公告)日:2005-11-17

    申请号:PCT/US2005/016045

    申请日:2005-05-06

    Abstract: An optical fiber suitable to support single mode optical transmission at longer wavelengths (e.g., 1550 nm) is formed to comprise a pure silica core region and a "down doped" cladding layer. The core region is defined as having a diameter d and the cladding layer is defined has having an outer diameter D. In accordance with the present invention, single mode propagation wí11 be supported when D/d > 8.5, and is preferably in the range of 9 - l 0.

    Abstract translation: 形成适合于支持较长波长(例如1550nm)的单模光传输的光纤,以包括纯二氧化硅芯区域和“下掺杂”包覆层。 芯区域被定义为具有直径d,并且包层的外径为D。根据本发明,当D / d> 8.5时,单模传播w 111支持,优选在 9 - l 0。

    A METHOD OF FABRICATING RARE EARTH DOPED OPTICAL FIBRE
    195.
    发明申请
    A METHOD OF FABRICATING RARE EARTH DOPED OPTICAL FIBRE 审中-公开
    一种制备稀土类光纤光纤的方法

    公开(公告)号:WO2003082756A1

    公开(公告)日:2003-10-09

    申请号:PCT/IN2002/000089

    申请日:2002-03-28

    Abstract: The present invention provides a method of fabricating rare earth doped preforms and optical fibres by a combination of modified chemical vapour deposition (MCVD) process and solution doping technique said (MCVD) process is used to develop matched or depressed clad structure inside a silica glass substrate tube followed by deposition of porous silica soot layer containing GeO 2 , P 2 O 5 or such refractive index modifiers by the backward deposition method for formation of the core and presintering the deposited particulate layer by backward pass with flow of GeCl 4 and/or corresponding dopant halides, soaking the porous soot layer into an alcoholic/aqueous solution of RE-salts containing codopants such as AlCl 3 in definite proportion, drying, oxidation, dehydration and sintering of the RE containing porous deposit and by collapsing at a high temperature to produce the preform followed by drawing the fibres by known technique to produce fibres with suitable core-clad dimensions and geometry.

    Abstract translation: 本发明提供了通过改进的化学气相沉积(MCVD)工艺和溶液掺杂技术的组合制造稀土掺杂的预制件和光纤的方法,所述(MCVD)工艺用于在石英玻璃基板内部开发匹配或凹陷的包层结构 然后通过用于形成芯的反向沉积方法沉积含有GeO> 2 <,> 25 <或>这些折射率改性剂的多孔二氧化硅烟灰层,并通过GeCl> 4的流动反向预烧结沉积的颗粒层, 和/或相应的掺杂剂卤化物,将多孔烟灰层浸泡成含有共混物的RE盐的醇/水溶液,例如AlCl 3,一定比例的干燥,氧化,脱水和烧结含RE多孔沉积物,并通过塌陷 在高温下生产预成型件,然后通过已知技术拉伸纤维,以生产具有合适的芯包层尺寸和地层的纤维 metry。

    A PROCESS FOR MAKING RARE EARTH DOPED OPTICAL FIBRE
    197.
    发明申请
    A PROCESS FOR MAKING RARE EARTH DOPED OPTICAL FIBRE 审中-公开
    制造稀土接地光纤的工艺

    公开(公告)号:WO2002060830A1

    公开(公告)日:2002-08-08

    申请号:PCT/IN2001/000014

    申请日:2001-02-02

    Abstract: The present invention provides an improved process for making rare earth doped preforms and fibres by a combination of MCVD technique and solution doping method, said method comprising developing matched or depressed clad structure inside a silica glass substrate tube followed by deposition of unsintered particulate layer containing GeO 2 and P 2 O 5 for formation of the core and solution doping by soaking the porous soot layer into an alcoholic/aqueous solution of RE-salts containing co-dopants like AlCl 3 / Al(NO 3 ) 3 in definite proportion, controlling the porosity of the soot, dipping period, strength of the solution and the proportion of the codopants to achieve the desired RE ion concentration in the core and minimise the core clad boundary defects and followed by drying, oxidation, dehydration and sintering of the RE containing porous deposit and collapsing at a high temperature to produce the preform and overladding with silica tubes of suitable dimensions and fibre drawing to produce fibres.

    Abstract translation: 本发明提供了一种通过MCVD技术和溶液掺杂方法的组合制备稀土掺杂预成型件和纤维的改进方法,所述方法包括在石英玻璃基板管内形成匹配或凹陷的包层结构,随后沉积含GeO的未烧结颗粒层 通过将多孔烟灰层浸泡到含有共掺杂剂如AlCl 3的Al盐/水溶液中,形成芯和溶液掺杂2&lt; 2&gt; 2&lt; 5&gt; 3 <3>一定比例,控制烟灰的孔隙率,浸渍时间,溶液强度和共混物的比例,以达到芯中所需的RE离子浓度,并使芯包层边界缺陷最小化,随后 干燥,氧化,脱水和烧结含RE多孔沉积物并在高温下塌陷以制备预成型件,并与适当尺寸的硅胶管和纤维拉伸 g生产纤维。

    QUARTZ GLASS TUBE FOR USE IN THE PRODUCTION OF OPTICAL FIBER PREFORMS
    198.
    发明申请
    QUARTZ GLASS TUBE FOR USE IN THE PRODUCTION OF OPTICAL FIBER PREFORMS 审中-公开
    石英玻璃管用于生产光纤预制件

    公开(公告)号:WO0027767B1

    公开(公告)日:2000-07-27

    申请号:PCT/EP9908539

    申请日:1999-11-08

    Abstract: An object of the present invention is to provide a quartz glass tube for optical fiber preforms capable of producing optical fiber preforms having high dimensional precision, excellent distribution of refraction index, and yet free from degradation and the like of working environment. The object above is accomplished by a quartz glass tube for use in the production of optical fiber preforms, characterized in that the high temperature viscosity thereof is varied in the wall thickness direction, and that the high temperature viscosity in the inner layer side is lower than that of the outer layer side. It is shown how the viscosity and the refractive index are influenced by different doping agents to optimize producing parameters for the optical fiber preform and the distribution of refraction index of the optical fiber preform obtained. A method for producing an optical fiber preform comprising inserting a core glass rod into said quartz glass tube and melt welding them together is also disclosed.

    Abstract translation: 本发明的一个目的是提供一种用于光纤预制棒的石英玻璃管,其能够生产尺寸精度高,折射率分布优异并且没有工作环境劣化等的光纤预制棒。 上述目的通过一种用于生产光纤预制棒的石英玻璃管来实现,其特征在于,其高温粘度在壁厚方向上是变化的,并且内层侧的高温粘度低于 即外层侧。 显示了粘度和折射率如何受不同掺杂剂影响,以优化光纤预制棒的生产参数和获得的光纤预制棒的折射率分布。 还公开了一种制造光纤预制棒的方法,该方法包括将芯玻璃棒插入所述石英玻璃管并将它们熔融焊接在一起。

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