Method of fabricating integrated optical guides of glass
 Refractive index change in a glass substrate, necessary to obtain a guiding region, is obtained by bombarding the substrate surface with an electron beam. An electric field induced by negative charge accumulation is created under the surface, whereby sodium ions present in glass are made to migrate towards the inside of the substrate. 
CSELT - Centro Studi e Laboratori Telecomunicazioni S.p.A.
G
G02B
inventional
Marco Giuseppe Roberto
Braglia Cocito De Franceschi