摘要We analyse the diffraction result of optical field after Cosine zone plate, and theoretically deduce its transform matrix. Under some conditions, its diffraction distribution is a mixture of fractional Fourier spectra. Then we use Cosine zone plate and its diffraction result to image encryption. Possible optical image encryption and decryption implementations are proposed, and some numerical simulation results are also provided.
Abstract：We analyse the diffraction result of optical field after Cosine zone plate, and theoretically deduce its transform matrix. Under some conditions, its diffraction distribution is a mixture of fractional Fourier spectra. Then we use Cosine zone plate and its diffraction result to image encryption. Possible optical image encryption and decryption implementations are proposed, and some numerical simulation results are also provided.
GE Fan;CHEN Lin-Fei;ZHAO Dao-Mu. Application of Cosine Zone Plates to Image Encryption[J]. 中国物理快报, 2008, 25(8): 2863-2865.
GE Fan, CHEN Lin-Fei, ZHAO Dao-Mu. Application of Cosine Zone Plates to Image Encryption. Chin. Phys. Lett., 2008, 25(8): 2863-2865.
2008, Vol. 25 
