Method of modifying the refractive index of fluoride glass

Details Method of modifying the refractive index of fluoride glass Method of modifying the refractive index of fluoride glass

1985-11-25

1987-07-14

Lindsay, Robert

Glass manufacturing

Processes

Forming product or preform from molten glass

65 17, 65134, 65DIG16, 501 30, 423 72, 423 76, 423492, C03B 37027

Patent

active

046800441

ABSTRACT:
The present invention relates to a method of producing a fluoride glass preform and/or fiber having a modified refractive index by heating the fluoride glass preform to a temperature that is above its glass transition temperature, but below its devitrification temperature; inserting a first electrode into the inner core of the preform and surrounding the outer perimeter of the preform with a second electrode of opposite polarity; means for generating an electromotive force; and applying an electromotive force through the first electrode and the second electrode which causes a movement of positive ions toward the electrode of opposite charge while simultaneously causing a movement of negative ions toward its electrode of opposite charge such that the movement of these ions results in a modification of the refractive index of the preform.

REFERENCES:
patent: 4388097 (1983-06-01), Turk et al.
patent: 4504300 (1985-03-01), Gauthier et al.
patent: 4537864 (1985-08-01), Tick
patent: 4578252 (1986-03-01), Pastor et al.

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