The refractive indices of planar silver-ion-exchanged waveguides have been modified by UV excimer laser irradiation (λ=193 nm) . The effective index changes of the fundamental modes of the waveguides after exposition are as large as 2×10-2 . The procedure permits the fabrication of integrated optical components in a direct way, with neither the use of standard lithography nor previous sensitizing of the substrate. Optical characterization of the irradiated samples is presented. By the use of appropriate masks, we have fabricated planar Bragg gratings.
© 1999 Optical Society of America
(130.0130) Integrated optics : Integrated optics
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(140.2180) Lasers and laser optics : Excimer lasers
(140.3390) Lasers and laser optics : Laser materials processing
C. Montero, C. Gomez-Reino, and J. L. Brebner, "Planar Bragg gratings made by excimer-laser modification of ion-exchanged waveguides," Opt. Lett. 24, 1487-1489 (1999)