Method of producing a glass layer on an interior surface of a ho

Details Method of producing a glass layer on an interior surface of a ho Method of producing a glass layer on an interior surface of a ho

1981-07-16

1983-06-14

Fisher, Richard V.

Glass manufacturing

Processes

With shaping of particulate material and subsequent fusing...

65 312, 65 608, 427163, 427237, C03B 37075, C03C 1702

Patent

active

043880959

ABSTRACT:
Glass preforms useful for producing optical fibers therefrom are produced by forming at least one layer of glass on an inner surface of a hollow glass tube by introducing a reactive gas mixture suitable for glass synthesis (ie., SiCl.sub.4, GeCl.sub.4, etc., and O.sub.2) and a combustible heating gas mixture (ie., CO, C.sub.2 N.sub.2, CS.sub.2, C.sub.4 N.sub.2, COS, C.sub.3 O.sub.2, etc., and O.sub.2) into a hot region within the hollow tube which is generated by exterior heating of such tube. The reactive gas undergoes a chemical reaction at such hot region whereby a material having the composition of glass is deposited on the hot inner surface of the tube as a layer and melts into a clear glass film while the heating gas combusts at the hot region and aids the rate of glass formation on the inner surface of the tube.

REFERENCES:
patent: 3791714 (1974-02-01), Maurer
patent: 4235616 (1980-11-01), Siegfried
patent: 4310340 (1982-01-01), Sarkar
P. C. Schultz, Applied Optics, vol. 18, (1979) pp. 3684-3693.
Survey Papers, XIth Intern. Congr. Glass, vol. II, (Prague 1977), pp. 114-157.
T. Akamatsu et al., Applied Physics Letters, vol. 31, (1977) pp. 174-176.

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