SOL-GEL GLASS WAVE-GUIDES PREPARED AT LOW-TEMPERATURE

Planar waveguides of TiO2-organically modified silanes deposited on gl ass substrates were prepared by the sol-gel method, either in a pure f orm or doped by red perylimide laser dye, and their optical properties characterized. The refractive index increases and film thickness decr eases as TiO2 contents rise. Waveguiding in the pure film and the trap ped luminescence in the doped films were measured. Typically three gui ded modes were observed.