ZnS/ZnSe stratified grating wave filter fabricated by using vacuum coating technique on BK7 glass waveguide is reported in this paper and at room temperature optical controlling switch modulation of the grating wave filter has been realized by means of prism coupling with waveguide under Ar + laser paulse.The origin of the optical nonlinearity is attributed to "band filling" caused by the nonlinear absorption of the material and reflection occured among the multilayer films.