Process for producing optical fiber preform

Glass manufacturing – Processes – With shaping of particulate material and subsequent fusing...

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65 312, 65 13, 65 32, C03B 1906

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active

043187269

ABSTRACT:
A process for producing an optical fiber preform which comprises forming a particulate glass rod in which the dopant concentration gradually increases toward the center of its cross section, and gradually heating the rod starting at a temperature below the minimum collapsing point of the fine glass particles in the center of the rod in such a manner that the softening of the rod proceeds from the center outward, to thereby produce a transparent glass rod.

REFERENCES:
patent: 3806570 (1974-04-01), Flamenbaum et al.
patent: 3868170 (1975-02-01), DeLuca
patent: 4203744 (1980-05-01), Schultz et al.

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