Signal and reference wave dually encrypted digital holographic system  

作　　者：ZHU YiChao ZHANG JiaSen GONG QiHuang 

机构地区：[1]State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China

出　　处：《Chinese Science Bulletin》2008年第19期2935-2939,共5页

基　　金：Supported by the Program for New Century Excellent Talents in University, National Natural Science Foundation of China (Grant No. 10521002);National Basic Research Program of China (Grant No. 2007CB307001)

摘　　要：We propose a secure digital holographic system with signal and reference waves dually encrypted. Two random phase masks are used to encrypt the images in the input and the Fourier planes. The reference beam is phase encoded by another random phase mask. The encrypted image and the key are recorded by a CCD camera. The data can be processed or transferred directly by computer. We theoretically and experimentally demonstrate encryption and decryption of multiple images and the results show a high quality and good fault tolerance.We propose a secure digital holographic system with signal and reference waves dually encrypted. Two random phase masks are used to encrypt the images in the input and the Fourier planes. The reference beam is phase encoded by another random phase mask. The encrypted image and the key are recorded by a CCD camera. The data can be processed or transferred directly by computer. We theoretically and experimentally demonstrate encryption and decryption of multiple images and the results show a high quality and good fault tolerance.

关 键 词：光学 密码 数字全息术 信号 

分 类 号：O43[机械工程—光学工程]