The processes of fabrication and poling for DANS (4-dimethylamino-4’nitro stlibene) side-chain polymer film waveguide have been described in this paper. By using the prism coupling technique in yntegrated optics

the optical properties of the wave-guide have been characterized before and after poling and UV photobleaching respectively. It has been demonstrated by the experiment results that the extraordinary refractive index of the wave guide was increased obviously and the ordinary refractive index of the waveguide was reduced after poling

and the refractive indices of the waveguide were reduced about 0.02 after UV photobleaching.