Process for producing optical transmission fiber

Details Process for producing optical transmission fiber Process for producing optical transmission fiber

1978-08-03

1980-12-30

Pianalto, Bernard D.

Coating processes

Optical element produced

Polarizer, windshield, optical fiber, projection screen, or...

65 3A, 427171, 427231, 427237, 4273762, B05D 506

Patent

active

042423759

ABSTRACT:
A process for producing an optical transmission fiber is provided which comprises feeding highly pure halides, hydrides or organic compounds of Si and B by way of carrier gas on the outer surface of a fused silica rod or a fused silica pipe, or inner surface of a fused silica pipe, oxidizing them and depositing the products to form a pure fused silica layer or a doped fused silica layer containing B.sub.2 O.sub.3, melting the pipe and the deposited layer followed by a spinning. The SiO.sub.2 layer can alternatively contain fluorine instead of B.sub.2 O.sub.3. A further SiO.sub.2 layer can be deposited thereon to improve the spinning processability and lower the index of refraction of the B.sub.2 O.sub.3 containing layer.

REFERENCES:
patent: 3778132 (1973-12-01), Pinnow et al.

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