Cross phase modulation switching in chalcogenide fibre Bragg grating

In this paper we have numerically analyzed the application of nonlinear fiber Bragg gratings as promising tools for all optical processing governed by third-order nonlinear optical parameters of chalcogenide glasses. The possibility of changing transmission properties of the grating via the cross phase modulation (XPM) between the probe and pump signal has been shown. Several cases of switching the probe signal controlled by the pump have been presented. The schematic illustration of the switch based on nonlinear fiber Bragg gratings has been also presented. For the numerical simulations the time domain - transfer matrix method (TD-TMM) has been used.