Sol-gel glass waveguides prepared at low temperature

Abstract

Planar waveguides of TiO2-organically modified silanes deposited on glass substrates were prepared by the sol-gel method, either in a pure form or doped by red perylimide laser dye, and their optical properties characterized. The refractive index increases and film thickness decreases as TiO2 contents rise. Waveguiding in the pure film and the trapped luminescence in the doped films were measured. Typically three guided modes were observed.