All-Optical Switching of Fiber Grating Coupler Utilizing Cross-Phase Modulation by Pump Pulses Emitted from a Mode-Locked EDF Laser

Based on coherent detection using a lock-in amplifier, the red-shift of the Bragg wavelength for a fiber grating coupler (FGC) was estimated to be 0.04-0.06nm .6nm /1.5-1.7kW peak power of pump light at 1.55, ?m, which was induced by Kerr nonlinearities due to cross-phase modulation in a FGC.