Organic/silica hybrid films were fabricated by sol-gel processing method. The purpose of this study is to investigate the electro-optic properties and to exploit the practical applications. Surface morphology of the films was studied using SEM(scanning electron microscopy) and AFM(atomic force microscopy). Cracks in dye-doped silica film could be removed by adding IP-TEOS to solution, and a pendant dye incoprated IP-TEOS plays the role of reducing the surface defects.
Corona poling and DC contact poling techniques were used to align the nonlinear optical chromophore molecules. The optimum poling condition was obtained by changing the poling time, voltage and temperature. The electro-optic coefficients were measured by simple reflection method and the largest value of $r_{33}$ obtained was 3pm/V at 1.3㎛. The second harmonic coefficients were measured by Maker fringe technique, and the ordering parameter, η was determi ned from this value. For the sol-gel film with $d_{33}$ value of 14pm/V at 1.064㎛, η was estimated to be 0.19
The photobleaching experiment was also carried out using the ultraviolet radiation of 55W/㎠ and it was found that the refractive index could be easily controlled by adjusting the exposure time. The photobleaching effect thus can facilitate the fabrication of the low-loss channel waveguide of organic/silica film.