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    • 23. 发明授权
    • Method for producing preform for polarization retaining optical fiber
    • 用于生产用于偏振保持光纤的预制件的方法
    • US5221307A
    • 1993-06-22
    • US892783
    • 1992-06-03
    • Masahiro TakagiHiroshi SuganumaHiroo Kanamori
    • Masahiro TakagiHiroshi SuganumaHiroo Kanamori
    • C03B37/012
    • C03B37/01217C03B2203/31
    • A preform for a polarization retaining optical fiber is produced by making at least two bores symmetrically around a center axis of a preform comprising a core part and a cladding part which surrounds the core part, decreasing a diameter of one end of each bore, or connecting a glass tube to one end of the preform, the glass tube having a part with a smaller inner diameter near its end which is connected to the preform, inserting a first glass rod, a stressing member and a second glass rod in this order from the other end of each bore or from an end of each bore which is remote from the connected glass tube, contacting the first glass rod to the diameter-decreased end of each bore or to the part with a smaller inner diameter of the glass tube, and heating and fusing the second glass rod to the preform.
    • 用于偏振保持光纤的预成型体通过使包括芯部的芯部和包层部的包围芯部的预成型件的中心轴对称地形成至少两个孔而制造,减少每个孔的一端的直径或连接 玻璃管到预成型件的一端,玻璃管具有靠近其端部具有较小内径的部分,其连接到预成型件,从第一玻璃棒,第二玻璃棒按顺序插入第一玻璃棒,应力构件和第二玻璃棒 每个孔的另一端或远离连接的玻璃管的每个孔的端部,将第一玻璃棒接触每个孔的直径减小的端部或具有较小的玻璃管的内径的部分,以及 将第二玻璃棒加热并熔合到预制件上。
    • 26. 发明授权
    • Process of producing a highly pure glass tube
    • 生产高纯玻璃管的工艺
    • US4666488A
    • 1987-05-19
    • US833193
    • 1986-02-27
    • Futoshi MizutaniGotaro TanakaHiroo Kanamori
    • Futoshi MizutaniGotaro TanakaHiroo Kanamori
    • C03B8/04C03B19/14C03B20/00C03B37/014C03C25/04C03B37/027
    • C03B19/1415C03B19/1469C03B19/1492C03B2207/36C03B2207/62C03B2207/66C03B2207/70
    • A method of producing a highly pure glass tube having a smooth inner surface, said method comprising the steps ofdepositing by the flame hydrolysis of a glass-forming raw material, a first layer of glass soot particles having a bulk density no greater than 0.2 g/cm.sup.3 on a seed member having a smooth and clean outer surface,depositing on the surface of the first layer of glass soot particles, a second layer of glass soot particles having a bulk density greater than that of the first layer by at least 0.03 g/cm.sup.3,drawing the seed member from the deposited two-layered glass soot preform to form a tube of glass soot particles,removing the first inner layer of glass soot particles from the second layer, either simultaneously with or subsequent to the drawing of the seed member from the soot preform, andheating and vitrifying the tubular glass soot preform to form a transparent solid glass tube.
    • 一种制造具有光滑内表面的高纯玻璃管的方法,所述方法包括以下步骤:通过火焰水解沉积玻璃形成原料,堆积密度不大于0.2g的第一层玻璃烟灰颗粒 在具有平滑和干净的外表面的种子构件上沉积在第一层玻璃烟灰颗粒的表面上,第二层玻璃烟灰颗粒的堆积密度大于第一层的堆积密度至少0.03g 从沉积的双层玻璃烟炱预制件中拉出种子构件以形成玻璃烟灰颗粒管,从第二层去除第一内层的玻璃烟灰颗粒,或者同时或之后拉出种子 来自烟灰预制件的构件,以及加热和玻璃化管状玻璃烟炱预制件以形成透明的固体玻璃管。