In this letter, the fabrication of channel waveguides by direct UV writing into a bulk tin-doped multicomponent silicate glass is presented. Different laser powers and scan rates were employed and optimized to avoid surface ablation. The best results were obtained at a laser power of 95 mW and at a scan speed of 10 mm/min, where a refractive index change of 1.5×10−3 was estimated and an attenuation loss of 3.3 dB/cm was measured using the cutback method. A morphological investigation of the glass end facets was performed in order to assess the surface effect of the laser exposure.
Photosensitive properties of a tin-doped sodium silicate glass for direct ultraviolet writing / Milanese, Daniel; Ferraris, Monica; Menke, Y.; Olivero, Massimo; Perrone, Guido; Gawith, C. B. E.; Brambilla, G.; Smith, P. G. R.; Taylor, E. R.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 84:17(2004), pp. 3259-3261. [10.1063/1.1715148]
Photosensitive properties of a tin-doped sodium silicate glass for direct ultraviolet writing
MILANESE, DANIEL;
2004-01-01
Abstract
In this letter, the fabrication of channel waveguides by direct UV writing into a bulk tin-doped multicomponent silicate glass is presented. Different laser powers and scan rates were employed and optimized to avoid surface ablation. The best results were obtained at a laser power of 95 mW and at a scan speed of 10 mm/min, where a refractive index change of 1.5×10−3 was estimated and an attenuation loss of 3.3 dB/cm was measured using the cutback method. A morphological investigation of the glass end facets was performed in order to assess the surface effect of the laser exposure.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
