Method of fabricating fluoride-glass integrated optical waveguides
 Integrated optical guides are fabricated on fluoride glass plates by expog such plates to an atmosphere of a gaseous halogen other than fluorine, or of a compound capable of generating such a halogen, at high temperature and pressure, so as to obtain a ion exchange between fluoride ions in the glass and halide ions. 
Sirti S.p.A. SIP-Societa Italiana Per L'Esercizio Telecommunicazione P.A. Societa' Cavi Pierelli S.p.A.
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Y10S G02B C03C C03C
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