2 × 2 grating assisted all-optical waveguide switch

2 × 2 grating assisted all-optical waveguide switch is realized on ion-exchanged channel waveguides with a new dye-doped sol-gel cover film. The switching state is controlled by the photo-induced dynamic generation of gratings in the sol-gel film. Switch characteristics such as crosstalk, speed, and on-off ratio will be reported.