According to the Lohmann I type fractional Fourier transform(FRFT) optical unit and based on the numerical algorithm of FRFT,the discrete complex amplitude of object wave in the FRFT domain is obtained.The computer generated hologram(CGH) of FRFT is made out with the discrete complex amplitude by using the coding method of interference type CGH.The digital reconstruction of the hologram was performed in the computer.The results of simulating experiments show that the interference type CGH can record the who...