Process for the preparation of glass fiber optical waveguides wi

Details Process for the preparation of glass fiber optical waveguides wi Process for the preparation of glass fiber optical waveguides wi

1992-09-05

1993-09-07

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 12, 65 13, C03B 37023

Patent

active

052424766

ABSTRACT:
For the production of glass fiber optical waveguides with increased tensile strength, these are drawn from a glass preform with a single-layer or multi-layer of additional sheathing of a glass material, with the material of at least the outermost layer in each case having a lower coefficient of thermal expansion as compared with the layer located underneath it or with the material of the preform. During the drawing process, the fiber is drawn from the preform in the cold state with increased tensile force of 70 to 200 cN.

REFERENCES:
patent: 4184860 (1980-01-01), Schneider et al.
patent: 4460696 (1984-07-01), Harada et al.
patent: 4702759 (1987-10-01), Roba

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