Preparation of Bragg gratings in sputter-deposited GeO(2)-SiO(2) glasses by excimer-laser irradiation.
GeO(2) - SiO(2) thin glass films were prepared by the rfsputtering deposition method. Changes in the refractive index of -3% and in the volume of +18% were induced in the film by irradiation with excimer-laser pulses. Bragg gratings a (periodic surface-relief pattern with a sinusoidal wave) have been written in the film by irradiation through a phase mask.
Nishii
J
J
Yamanaka
H
H
Hosono
H
H
Kawazoe
H
H