Light-wave guides and method of producing same

Details Light-wave guides and method of producing same Light-wave guides and method of producing same

1979-09-10

1981-10-13

Corbin, John K.

65 2, G02B 514, C03B 3700

Patent

active

042945143

ABSTRACT:
A light-wave guide fiber is pulled from a uniform fiber-yielding material and the peripheral surface areas (cladding) of such fiber are enriched with a gas soluble in the fiber material at temperatures below the softening temperature of the fiber and at relatively high pressure (for example, via high pressure/high temperature diffusion). The excess pressure resulting in the cladding is equalized by a subsequent temporary heating of the fiber above the softening temperature which causes a change of density in the fiber core. Thereafter, the gas is diffused out of the cladding at a lower temperature. The resultant fiber exhibits a radially outwardly decreasing refractive index.

REFERENCES:
patent: 3355273 (1967-11-01), Siegmund et al.
patent: 3817731 (1974-06-01), Yoshiyagawa
patent: 3963468 (1976-06-01), Jaeger et al.
patent: 4165222 (1979-08-01), de Panafieu et al.

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