Title: Method for producing highly pure glass preform for optical fiber
Application Number: 85101855 Application Date: 1985.04.01
Publication Number: 1007126 Publication Date: 1987.01.17
Approval Pub. Date: Granted Pub. Date: 1992.10.21
International Classifi-cation: C03B37/018
Applicant(s) Name: Sumitomo Electric Ludustries Ltd. Address:
Inventor(s) Name: Futoshi Mizutani, Gotaro Tanaka
Attorney & Agent: QI ZENGDU
Abstract:
     Glass micro-particles, produced at the first blow lamp by ejecting raw glass and fuel gas, deposit on a seed wire forming deposited wire at an appropriate temp. so as to make the deposited wire have a low apparent density. It is heated at the second blow lamp to increase its density, and sintered to a transparent preform for optical fiber. By this method, crackleless, highly pure glass preform is produced at a high rate.
Time: 7
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