Simple optical decryption based on a modified joint transform correlator technique  

作　　者：王怀彬 王天佐 袁晓聪 

机构地区：[1]School of Computer Science & Technology, Tianjin University of Technology, Tianjin 300191, China [2]School of Computer Science & Technology, Harbin Institute of Technology, Harbin 150001, China [3]School of Electrical & Electronic Engineering, Nanyang Technological University, Nanyang Avenue 639798, Singapore

出　　处：《Journal of Harbin Institute of Technology(New Series)》2006年第2期203-205,共3页哈尔滨工业大学学报（英文版）

基　　金：SponsoredbytheNationalNaturalScienceFoundationofChina(GrantNo.66272011);NaturalScienceFoundationofTianjin(GrantNo.033600211).

摘　　要：A new encryption/decryption system for optical information security is proposed in this paper. We used an iterative Fourier transform algorithm to optimize the encrypted hologram as well as the decryption key as phase-only elements. The optical decryption was implemented by superimposing the encrypted hologram and the decryyption key in a simple optical setup. Numerical simulation and optical experiment have confirmed the proposed technique as a simple and easy implementation for optical decryption, demonstrating potential applications in optical information security verification.A new encryption/decryption system for optical information security is proposed in this paper. We used an iterative Fourier transform algorithm to optimize the encrypted hologram as well as the decryption key as phase-only elements. The optical decryption was implemented by superimposing the encrypted hologram and the decryption key in a simple optical setup. Numerical simulation and optical experiment have confirmed the proposed technique as a simple and easy implementation for optical decryption, demonstrating potential applications in optical information security verification.

关 键 词：computer generated holograms CORRELATOR ENCRYPTION/DECRYPTION 

分 类 号：TN911.72[电子电信—通信与信息系统]