Apparatus for the manufacture of constructions in fibers

Details Apparatus for the manufacture of constructions in fibers Apparatus for the manufacture of constructions in fibers

1984-08-20

1986-01-21

Lindsay, Robert

Glass manufacturing

Processes

Forming product or preform from molten glass

65 2, 65 12, 65 61, C03B 2308

Patent

active

045655588

ABSTRACT:
An apparatus for manufacturing constrictions in fibers characterized by a stretching device for stretching the fiber and a heating device for brief local heating of the stretched fiber to a softening temperature. To improve the reliability and reproducibility of the constrictions formed in the fiber, the stretching device includes an arrangement which limits the maximum stretching force applied to the fiber and includes two exactly aligned guide grooves, which are spaced apart with the heating means disposed therebetween, for positioning the fiber during the heating and stretching steps. To produce the exactly aligned guide grooves, the method includes providing a substrate having a rectilinear guide groove, securing the substrate on a support member and subsequently removing a center portion of the substrate to leave a pair of spaced substrate sections having the aligned grooves.

REFERENCES:
Kuwahara et al., "Efficient Coupling from Semiconductor Lasers into Single-Mode Fibers with Tapered Hemispherical Ends", Applied Optics, vol. 19, No. 15, Aug. 1, 1980, pp. 2578-2583.

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