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    METHODS OF MANUFACTURING SOOT FOR OPTICAL FIBER PREFORMS AND PREFORMS MADE BY THE METHODS
    32.
    发明申请
    METHODS OF MANUFACTURING SOOT FOR OPTICAL FIBER PREFORMS AND PREFORMS MADE BY THE METHODS 审中-公开
    光纤预制件制造方法和方法制作的方法

    公开(公告)号：WO00026151A1

    公开(公告)日：2000-05-11

    申请号：PCT/US1999/024304

    申请日：1999-10-18

    IPC: G02B6/00 ,  C03B19/14 ,  C03B37/014 ,  C03B37/018

    CPC classification number: C03B37/01413 ,  C03B19/1415 ,  C03B19/1423 ,  C03B37/0142 ,  C03B2201/30 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/40 ,  C03B2201/50 ,  C03B2201/54 ,  C03B2207/32 ,  C03B2207/34 ,  C03B2207/52

    Abstract: The present invention is directed to methods of producing soot used in the manufacture of optical waveguides. Both non-aqueous liquid reactants and aqueous solutions containing one or more salts are delivered through an atomizing burner assembly to form a homogenous soot stream containing the oxides of the selected elements contained within the non-aqueous liquid reactant and the aqueous solution. The resulting multi-component soot is collected by conventional methods to form preforms used in the manufacture of optical waveguide fibers. Alternatively, an aqueous solution may be atomized with a gas at a first burner assembly to form an aerosol and a reactant vaporized for delivery to a second burner assembly. Preforms produced by the methods are also disclosed. The aqueous solution is preferably one comprising a metal salt, e.g. acetate, nitrate, sulfate, carbonate, chloride, hydroxide. The metal of the metal salt is preferably an alkali metal, an alkaline earth metal, lead, lanthanum, cobalt, antimony, erbium, aluminum, neodymium, praeseodymium.

    Abstract translation: 本发明涉及生产用于制造光波导的烟灰的方法。 非水性液体反应物和含有一种或多种盐的水溶液通过雾化燃烧器组件输送以形成含有非水液体反应物和水溶液中所含选定元素的氧化物的均匀烟灰流。 通过常规方法收集所得的多组分烟灰，以形成用于制造光波导纤维的预成型件。 或者，水溶液可以在第一燃烧器组件处用气体雾化以形成气溶胶和蒸发的反应物以输送到第二燃烧器组件。 还公开了通过该方法生产的预成型件。 水溶液优选为包含金属盐的溶液。 乙酸盐，硝酸盐，硫酸盐，碳酸盐，氯化物，氢氧化物。 金属盐的金属优选为碱金属，碱土金属，铅，镧，钴，锑，铒，铝，钕，镨。

    AN IMPROVED METHOD FOR FABRICATING RARE EARTH (RE) DOPED OPTICAL FIBER USING A NEW CODOPANT
    35.
    发明申请
    AN IMPROVED METHOD FOR FABRICATING RARE EARTH (RE) DOPED OPTICAL FIBER USING A NEW CODOPANT 审中-公开
    一种改进的使用新配方制造稀土（稀土）掺杂光纤的方法

    公开(公告)号：WO2010109494A2

    公开(公告)日：2010-09-30

    申请号：PCT/IN2010/000201

    申请日：2010-03-29

    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH ,  DEPARTMENT OF INFORMATION TECHNOLOGY ,  SEN, Ranjan ,  DHAR, Anirban ,  PAUL, Mukul, Chandra ,  MAITI, Himadri, Sekhar

    Inventor： SEN, Ranjan ,  DHAR, Anirban ,  PAUL, Mukul, Chandra ,  MAITI, Himadri, Sekhar

    IPC: C03B37/018

    CPC classification number: C03B37/01838 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/54 ,  C03C3/095 ,  C03C4/0071 ,  C03C13/046 ,  Y02P40/57

    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 GeO 2 doped SiO 2 with or without small P 2 O 5 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: 本发明提供了使用BaO作为共掺杂剂而不是通常用于通过MCVD将二氧化硅玻璃中的RE引入的Al或P来制造稀土（RE）掺杂光纤的方法，以及溶液掺杂 技术。 该方法包括沉积具有或不具有小的P 2 O 5 5的GeO 2掺杂的SiO 2的颗粒层， 通过将多孔烟灰层浸泡到含RE和Ba的盐的水溶液中形成芯和溶液掺杂。 随后进行浸泡沉积物的脱水和烧结，在高温下塌陷以生产预制棒并拉伸合适尺寸的纤维。 使用Ba氧化物可以消除Al掺杂光纤常见的不需要的芯 - 包层界面缺陷。 这些光纤还显示出良好的RE均匀性，在0.6-1.6μm波长范围内具有相对较低的光损耗，并且具有良好的光学性能，适用于放大器，光纤激光器和传感器设备中的应用。

    METHODS AND APPARATUS FOR PRODUCING OPTICAL FIBER
    37.
    发明申请
    METHODS AND APPARATUS FOR PRODUCING OPTICAL FIBER 审中-公开
    生产光纤的方法和装置

    公开(公告)号：WO00027773A1

    公开(公告)日：2000-05-18

    申请号：PCT/US1999/019139

    申请日：1999-08-24

    IPC: G02B6/00 ,  C03B37/012 ,  C03B37/026 ,  C03B37/027 ,  G02B6/02 ,  C03C37/027 ,  G02B6/22

    CPC classification number: C03B37/02709 ,  C03B37/01211 ,  C03B37/01217 ,  C03B37/0122 ,  C03B37/026 ,  C03B37/027 ,  C03B37/02736 ,  C03B37/02754 ,  C03B37/0279 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/40 ,  C03B2201/54 ,  C03B2201/58 ,  C03B2203/42 ,  G02B6/02

    Abstract: Filament in tube and stick in tube processes of forming optical fiber are described. A solid or monolithic core feedstock (110) is disposed in a hollow cladding structure (112) to form a loosely filled cladding structure. The filled cladding structure is heated to a draw temperature approximately equal to the softening temperature of the cladding structure. The feedstock (110) melts and fills the heated portion of the cladding structure forming a filled core which can then be drawn into optical fiber or to an optical can which can then be further overclad consolidated and drawn into fiber. Feedstock (110) and cladding structures (112) having widely varying coefficients of expansion may be employed. The resulting fiber can be readily designed to be fused to existing installed fibers.

    Abstract translation: 描述了在成型光纤的管工艺中管和管中的灯丝。 将固体或整体式核原料（110）设置在空心包层结构（112）中以形成松散填充的包层结构。 将填充的包层结构加热到大约等于包层结构的软化温度的拉伸温度。 原料（110）熔化并填充形成填充芯的包层结构的加热部分，然后可以将其填充到光纤或光学罐中，然后可以进一步将其包覆固结并拉伸成纤维。 可以采用具有广泛变化的膨胀系数的原料（110）和包层结构（112）。 所得到的纤维可容易地被设计成与已经安装的纤维融合。

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