Process and device for fusion joining of fiber-optics fibers

Details Process and device for fusion joining of fiber-optics fibers Process and device for fusion joining of fiber-optics fibers

1980-09-15

1982-04-27

Fisher, Richard V.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 29, 65152, 65158, C03B 2320

Patent

active

043268706

ABSTRACT:
A process for fusion joining the ends of optical fibers includes aligning the ends of the two fiber cores to be joined facing each other such that at least one of the ends is free to be displaced laterally and there is no axial force between the two ends. The ends of the fibers are heated by producing a heat field with a predetermined distribution, for a predetermined period until attenuation of light transmitted through the fused joint increases, so as to cause partial fusion of the cores while maintaining sheathing of the fibers intact. A device for fusion splicing the two ends includes two opposed fiber supports for maintaining the end portions of the optical fibers to be fusion spliced in an approximately aligned position, the supports being slidable along the axes of the fibers being mounted on said supports such that their ends are free to move laterally. Optical means, such as a binocular microscope, is provided for checking whether the ends of the fibers are in the position where they engage one another without exerting any axial force on each other. A propane-oxygen flame heating device establishes a controlled distribution of heat field for heating the core ends.

REFERENCES:
patent: 3798099 (1974-03-01), Marcatili
patent: 4049414 (1977-09-01), Smith
Hatakeyama et al., "Fusion Splices for Optical Fibers . . . ", Applied Optics, vol. 17, No. 12, Jun. 15, 1978, pp. 1959-1964.
Hatakeyama et al., "Fusion Splices for Single-Mode Optical Fibers . . . ", Rev. Electrical Comm. Labs., vol. 27, Nos. 7-8, Jul.-Aug. 1979, pp. 532-542.
Bisbee, "Optical Fiber Joining Technique", The Bell System Technical Journal, vol. 50, No. 10, Dec. 1971, pp. 3153-3158.

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