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    • 2. 发明授权
    • Continuous optical fiber preform fabrication method
    • 连续光纤预制棒制造方法
    • US4062665A
    • 1977-12-13
    • US784869
    • 1977-04-05
    • Tatsuo IzawaTadashi MiyashitaFumiaki Hanawa
    • Tatsuo IzawaTadashi MiyashitaFumiaki Hanawa
    • C03B37/018C03B37/014G02B6/00C03B37/00
    • C03B37/01426C03B37/014C03B37/01406C03B37/01413C03B37/0142C03B2201/06C03B2201/10C03B2201/42C03B2203/22C03B2207/04C03B2207/12C03B2207/16C03B2207/20C03B2207/22C03B2207/42C03B2207/62C03B2207/70C03B2207/81C03B2207/86
    • A refractory starting member is rotated and, at the same time, moved along the axis of rotation. A glass raw material for the formation of the core of a porous preform and consequently an optical fiber preform is introduced into a high temperature portion near the tip of a high temperature burner from a nozzle for the core disposed in alignment with the center of rotation of one end face of the starting member. The glass raw material blown out from the nozzle for the core are caused by the flames of the high temperature burner to react to produce glass fine particles, which are deposited on abovesaid end face of the starting member at the central portion thereof in its axial direction to form a porous core. At least one nozzle for spraying a glass raw material for the formation of the cladding of the optical fiber preform is disposed opposite to the end face of the starting member but a little deviated from the axis of rotation thereof, or disposed opposite to the peripheral surface of the porous core. The glass raw material for the cladding is sprayed from the nozzle for the cladding to the high temperature portion of the high temperature burner, and caused to react to form glass fine particles, which are deposited on the end face of the starting member on the outside of the porous core or on the peripheral surface thereof at the same time as the formation of the latter, forming a porous cladding. The porous preform thus obtained is moved into a high temperature furnace provided on the path of movement of the preform for the vitrification thereof into an optical fiber preform.
    • 旋转耐火起动部件,并且同时沿着旋转轴线移动。 用于形成多孔预成型件的核心的玻璃原料以及因此的光纤预制件被引入到高温燃烧器的尖端附近的高温部分中,所述高温部分从用于芯部的喷嘴设置成与旋转中心 起始构件的一个端面。 从芯的喷嘴吹出的玻璃原料是由高温燃烧器的火焰引起的反应而产生的玻璃微粒,它们在其中心部分的轴向方向沉积在起始构件的上端面上 以形成多孔芯。 用于喷射用于形成光纤预制件的包层的玻璃原料的至少一个喷嘴设置成与起始构件的端面相对,但是稍微偏离其旋转轴线,或者与周面相对设置 的多孔芯。 用于包层的玻璃原料从用于包层的喷嘴喷射到高温燃烧器的高温部分,并使其反应形成玻璃细颗粒,其沉积在外部的起始构件的端面上 的多孔芯或其外周表面,同时形成多孔芯,形成多孔包层。 将由此获得的多孔预制件移动到设置在预成型体的运动路径上的高温炉中,以将其玻璃化成为光纤预制件。
    • 5. 发明授权
    • Guided-wave circuit module and wave-guiding optical component equipped
with the module
    • 导波电路模块和配有该模块的波导光学元件
    • US5327517A
    • 1994-07-05
    • US923777
    • 1992-08-03
    • Yasufumi YamadaFumiaki HanawaKuniharu KatoYasuyuki InoueMasayuki OkunoToru MarunoTetsuo YoshizawaTakao Kimura
    • Yasufumi YamadaFumiaki HanawaKuniharu KatoYasuyuki InoueMasayuki OkunoToru MarunoTetsuo YoshizawaTakao Kimura
    • G02B6/30G02B6/36
    • G02B6/30
    • A guided-wave circuit module includes a guided-wave circuit chip having an input waveguide part and an output waveguide part at the ends thereof, a guided-wave circuit part having a predetermined function and positioned between the input waveguide part and the output waveguide part; and a holder for supporting the guided-wave circuit chip, wherein the guided-wave circuit part of the guided-wave circuit chip does not come in contact with the chip holder; at least part of the input and output waveguide parts of the guided-wave circuit chip is fixed to the holder with a fixing agent; and the packaged chip does not have a warp which leads to deterioration of characteristics. A fixing agent having a high hardness is applied to the periphery of the endfaces of the input and output waveguide parts of the guided-wave circuit module and to the periphery of the fiber endfaces of the optical fiber array connected to the module. Therefore, these endfaces can accurately be polished and the waveguide can be connected to the optical fibers at a sufficiently low fiber connection loss and a high return loss.
    • 导波电路模块包括具有输入波导部分和在其端部的输出波导部分的导波电路芯片,具有预定功能并且位于输入波导部分和输出波导部分之间的导波电路部分 ; 以及用于支撑导波电路芯片的保持器,其中导波电路芯片的导波电路部分不与芯片保持器接触; 导波电路芯片的输入和输出波导部分的至少一部分用固定剂固定到支架上; 并且封装的芯片不具有导致特性劣化的翘曲。 将导向波电路模块的输入和输出波导部分的端面的周边以及连接到模块的光纤阵列的光纤端面的外围施加具有高硬度的固定剂。 因此,这些端面可以被精确地抛光,并且波导可以以足够低的光纤连接损耗和高回波损耗连接到光纤。
    • 7. 发明授权
    • Fabrication methods of doped silica glass and optical fiber preform by
using the doped silica glass
    • 通过掺杂石英玻璃制备掺杂石英玻璃和光纤预制棒的方法
    • US4414012A
    • 1983-11-08
    • US300296
    • 1981-09-08
    • Shoichi SutoHiroyuki SudaFumiaki HanawaMotohiro NakaharaNobuo Inagaki
    • Shoichi SutoHiroyuki SudaFumiaki HanawaMotohiro NakaharaNobuo Inagaki
    • C03B20060101C03B19/10C03B37/014C03C3/06C03C13/04C03B19/06C03B20/00
    • C03B19/106C03B19/102C03B37/01413C03B37/0142C03B37/01486C03C13/045C03C3/06C03B2203/24C03B2203/26C03B2207/06C03B2207/20C03B2207/28C03B2207/50C03B2207/64C03B2207/87C03C2201/30C03C2201/40C03C2203/40
    • Manufacturing method of doped silica glass suitable for optical fiber wherein quartz powder or SiO.sub.2 glass fine particles are exposed to a gas for producing the doped silica glass containing SiCl.sub.4, a gaseous additive and water vapor (H.sub.2 O) to add the dopant to the glass body, and then the resulting glass body is fused at a high temperature, thereby producing a transparent doped silica glass in which the production of the glass particles, the addition of the dopant, and the vitrification of the glass body are carried out by separate steps under respective suitable conditions. The manufacturing speed is remarkably increased because of the separate steps. The content of the dopant is not limited, but can be adjusted with any desired amount by changing the reaction time of dissolution. Dopant components like PbO.sub.2, SnO.sub.2, ZnO which were typically not added to the glass body can now be added thereto. Also, a method of manufacturing an optical fiber preform is disclosed wherein the doped silica glass is deposited and fused on a starting material which is inclined by an angle within a range of 5.degree.-90.degree. with respect to a blow-off direction of the flow of the doped silica glass to form a transparent doped silica glass body having a uniform outer diameter and a uniform boundary surface at a high synthesizing speed. This latter method aids mass production of optical fibers at low cost.
    • 适用于光纤的掺杂二氧化硅玻璃的制造方法,其中将石英粉末或SiO 2玻璃微粒暴露于用于生产含SiCl4,气态添加剂和水蒸汽(H 2 O)的掺杂石英玻璃的气体中以将掺杂剂添加到玻璃体中, 然后将所得的玻璃体在高温下熔融,由此制备透明掺杂的石英玻璃,其中玻璃颗粒的产生,掺杂剂的添加和玻璃体的玻璃化在各自的步骤下通过各自的步骤进行 适合条件。 由于单独的步骤,制造速度显着增加。 掺杂剂的含量没有限制,但可以通过改变溶解的反应时间以任何所需的量进行调节。 现在可以向其中加入通常不加入到玻璃体中的掺杂剂组分如PbO 2,SnO 2,ZnO。 此外,公开了一种制造光纤预制棒的方法,其中将掺杂的石英玻璃沉积并熔合在起始材料上,所述起始材料相对于所述材料的吹出方向倾斜5°-90°的范围内的角度 掺杂石英玻璃的流动,以形成具有均匀外径和高合成速度的均匀边界表面的透明掺杂石英玻璃体。 后一种方法有助于以低成本大量生产光纤。