Method for fabricating buried waveguides

Details Method for fabricating buried waveguides Method for fabricating buried waveguides

1989-01-23

1990-04-03

Lindsay, Robert L.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 607, 65111, C03C 2100

Patent

active

049137174

ABSTRACT:
A method for fabricating buried waveguides on a glass substrate which contains sodium ions includes the steps of masking the substrate, performing a field-assisted ion-exchange process at low temperature to form waveguides by exchanging silver ions for the sodium ions, and performing a field-assisted ion-exchange at low temperature to bury the waveguides by exchanging potassium ions. In a preferred embodiment, the silver ions and the potassium ions are exchanged from eutectic melts.

REFERENCES:
patent: 3836348 (1974-09-01), Sumimoto et al.
patent: 3857689 (1974-12-01), Koizumi et al.
patent: 3880630 (1975-04-01), Izawa
patent: 4155735 (1979-05-01), Ernsberger

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