Method for the manufacturing of a fiber with a tapered end havin

Details Method for the manufacturing of a fiber with a tapered end havin Method for the manufacturing of a fiber with a tapered end havin

1985-02-22

1986-05-20

Lindsay, Robert

Glass manufacturing

Processes

Forming product or preform from molten glass

65 102, 65105, 65112, C03B 2106

Patent

active

045898979

ABSTRACT:
A method for manufacturing a fiber taper with a refractive lens, said method comprising the steps of placing a fiber in an axial tension of a given amount; locally heating a portion of the fiber under tension to cause softening and the formation of a constriction in the fiber in the area of heating; removing the tension and continuing the heating to raise the temperature to a point at which the viscosity of the heated material is such that the surface tension causes a further constriction and a transverse separation of the fiber at the constriction; continuing the heating to form the desired curvature of the lens on the separated ends; and then after the desired curvature is formed, stopping the heating to enable the ends to cool and solidify.

REFERENCES:
patent: 3684474 (1972-08-01), Chisholm
Kuwahara et al., "Efficient Coupling for Semi-Conductor Lasers into Single-Mode Fibers with Tapered Hemispherical Ends", Applied Optics, vol. 19, #15, Aug. 1, 1980, pp. 2578-2583.

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