Method for making multiple optical core fiber

Details Method for making multiple optical core fiber Method for making multiple optical core fiber

1978-06-12

1980-10-21

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 3A, 65 42, 65110, C03B 3702

Patent

active

042291976

ABSTRACT:
A multiple optical core fiber and method for manufacturing it. Two or more chemical vapor deposition type preforms are fused with a hydrogen-oxygen torch and then etched in a solution of 50% hydrofluoric and 50% nitric acid. A hollow quartz tube is subjected to internal gas pressure while a hydrogen-oxygen torch is passed along it. This expands and cleans the tube. The chemical vapor deposition preforms are inserted within the expanded tube which is again subjected to the torch to collapse it about the preforms. A nearly solid glass rod with two or more optical waveguide cores is thereby formed. This multiple core preform may then be drawn into a multiple core fiber which can be utilized for the transmission of light pulses.

REFERENCES:
patent: 3277564 (1966-10-01), Webber et al.
patent: 3455666 (1969-07-01), Bazinet
patent: 3455667 (1969-07-01), Snitzer et al.
patent: 3535017 (1970-10-01), Miller
patent: 3656925 (1972-04-01), Dunlap
patent: 3837830 (1974-09-01), Eberhart
patent: 3930714 (1976-01-01), Dyott
patent: 4011007 (1977-03-01), Phoneuf et al.
patent: 4154591 (1979-05-01), French

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