Title: Method for producing glass preform for optical fiber
Application Number: 85101869 Application Date: 1985.04.01
Publication Number: 1007587 Publication Date: 1987.01.24
Approval Pub. Date: Granted Pub. Date: 1992.11.11
International Classifi-cation: C03B37/018
Applicant(s) Name: Sumitomo Electric Industries, Ltd. Address:
Inventor(s) Name: Futoshi Mizutani
Attorney & Agent: CHENG TIANZHENG HE GUANYUAN
Abstract:
     According to the method offered by the present invention, the glass preform of optical fibre may be even in dial density and the process may be described as follows: to inject the gaseous glass raw material and the gaseous fuel of blowtorch into extremely fine glass grain, then the glass grain will deposit on the seed bar to form a soot bar and the temperature of the soot bar on which the glass grain is depositing is measured and controlled. Finally, the soot bar is sintered to form a transparent glass preform.
Time: 11