An experimental multicast scheme is proposed based on the semiconductor optical amplifier(SOA).First,the multi-wavelength pulse source is obtained by the spectral broadening and spectrum slices,and then the multi-wavelength pulse source as the probe light and the signal are injected into the SOA.The signal acts with each wavelength of the multi-wavelength pulse based on cross-gain modulation(XGM) in the SOA,and then it passes through the tunable optical band-pass filter at the output of SOA.The transformed ...