Manufacture of optical fibre preforms

Details Manufacture of optical fibre preforms Manufacture of optical fibre preforms

1984-11-13

1986-07-01

Schor, Kenneth M.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, 427163, C03B 37014, C03B 37018

Patent

active

045977879

ABSTRACT:
Manufacture of optical fibre preforms. A material such as Si, Ge and B.sub.2 O.sub.3 is evaporated in vacuo into a silica tube and is made to condense therein as a viscous liquid which is then oxidized. The operation may be repeated several times with different materials. In this way the tube is clad from within in such a way that the optical index of refraction increases from the periphery inwards. Upon completion of the cladding the tube is collapsed into a rod which is then used for drawing optical fibres.

REFERENCES:
patent: 3971645 (1976-07-01), Bachmann
patent: 4039607 (1977-08-01), Miller

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