Apparatus for manufacturing an optical fibre with plasma activat

Details Apparatus for manufacturing an optical fibre with plasma activat Apparatus for manufacturing an optical fibre with plasma activat

1977-02-14

1978-05-16

Fisher, Richard V.

Electric heating

Metal heating

Of cylinders

65 3A, 65 12, 65DIG4, 65134, 219 1055A, 13 6, 34 1, H05B 906, C03C 2502, C03B 2500, C03B 502

Patent

active

040900550

ABSTRACT:
An optical fibre is manufactured by forming a layer of fused silica, which may or may not be doped, on the inner wall of a fused silica tube by producing a plasma in the reactant gases flowing through the tube. By this means a higher temperature can be maintained inside the tube than at the tubes outer wall. The plasma is produced at substantially atmospheric pressure. Cooling gas is passed along the outer wall of the tube.

REFERENCES:
patent: RE28028 (1974-06-01), Maurer
patent: 3258314 (1966-06-01), Dedmond et al.
patent: 3484276 (1969-12-01), Durggraaf et al.
patent: 3590202 (1971-06-01), Day
patent: 3670132 (1972-06-01), Kaufman, Jr. et al.
patent: 3711262 (1973-01-01), Keck et al.
patent: 3944640 (1976-03-01), Haggerty et al.
patent: 3961926 (1976-06-01), Asam
patent: 3980459 (1976-09-01), Li
patent: 3982916 (1976-09-01), Miller

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