Process and apparatus for controlling the drawing of an optical

Details Process and apparatus for controlling the drawing of an optical Process and apparatus for controlling the drawing of an optical

1980-09-03

1982-03-02

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 13, 65 29, 65158, 65162, 65 111, C03B 37025, C03B 3707

Patent

active

043176666

ABSTRACT:
In the drawing of an optical fibre from a glass preform or gathering mould maintained at an appropriate temperature, a process and a system is described for controlling and regulating the characteristics of the optical fibre. To this purpose the fibre formation temperature within the drawing furnace is controlled by a measurement of the tensile stress. The heating of the furnace is regulated, while maintaining constant the tensile stress on the glass fibre at the fibre formation point. A gauge with an electronic measuring bridge is used to carry out a measurement at the preform suspension point, while correcting the effect of the weight reduction of the preform during drawing.

REFERENCES:
patent: 3471278 (1969-10-01), Griem, Jr.
patent: 4123242 (1978-10-01), Imoto et al.

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