Infrared optical fiber and method for manufacture thereof

Details Infrared optical fiber and method for manufacture thereof Infrared optical fiber and method for manufacture thereof

1981-01-16

1983-04-26

Nussbaum, Marvin L.

350 961, 350 9629, 65 33, G02B 514

Patent

active

043811418

ABSTRACT:
A preform is prepared to comprise a step index structure consisting of a core and a clad both made of metal halogenides or arsenic-selenium glass sparingly capable of transmitting infrared light of long wavelength and a layer of lubricant applied to the outer surface of the clad. The preform is set inside a metal cylinder. By pulling this metal cylinder through a plurality of dies containing orifices of successively decreased diameters at a temperature below the melting point, the preform can be elongated into an optical fiber of a prescribed diameter. The optical fiber thus produced is capable of transmitting infrared light of high power with a small loss. Protected and reinforced by the metal cylinder jacket, this fiber enjoys high mechanical strength.

REFERENCES:
patent: 3778132 (1973-12-01), Pinnow et al.
patent: 4114980 (1978-09-01), Asam et al.
patent: 4253731 (1981-03-01), Anderson et al.

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