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    • 3. 发明专利
    • Method of manufacturing porous preform for optical fiber and glass preform
    • 用于光纤和玻璃预制件的多孔预制件的制造方法
    • JP2005247636A
    • 2005-09-15
    • JP2004060499
    • 2004-03-04
    • Shin Etsu Chem Co Ltd信越化学工業株式会社
    • OTSUSAKA TETSUYAINOUE MASARU
    • C03B8/04C03B37/012C03B37/018
    • C03B37/012C03B37/0142C03B37/018C03B2207/50C03B2207/60C03B2207/62C03B2207/70
    • PROBLEM TO BE SOLVED: To provide a method of manufacturing a porous glass preform by which the deposition rate of a glass fine particle on a deposition surface is increased, soot suspended in a reaction vessel is reduced and the occurrence of bubbles produced in a product is prevented and the glass preform.
      SOLUTION: In the method of manufacturing the porous glass preform by flame-hydrolyzing a glass raw material in oxyhydrogen flame and depositing the produced glass fine particle, the glass fine particle is deposited by moving a center rod upward at almost fixed speed with the deposition of the glass fine particle and jetting flame stream containing the synthesized glass fine particle toward the glass fine particle deposition surface from the diagonally downward direction to form a recessed part on the deposition bottom surface of a deposited body.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种制造多孔玻璃预成型体的方法,通过该方法,沉积表面上的玻璃微粒的沉积速率增加,悬浮在反应容器中的烟灰减少,并且产生气泡的产生 防止产品和玻璃预制件。 解决方案:在通过在氢氧焰中火焰水解玻璃原料并沉积生产的玻璃微粒的方法制造多孔玻璃预制件的方法中,通过以几乎固定的速度将中心杆向上移动而沉积玻璃微粒, 将包含合成玻璃微粒的玻璃微粒和喷射火焰流从斜向下方向沉积到玻璃微粒沉积表面,以在沉积体的沉积底面上形成凹部。 版权所有(C)2005,JPO&NCIPI