Hybrid encryption and decryption technique using microfabricated diffractive optical elements

作者：Yuan, XC^*; Tao, SH; Cheong, WC; Chen, YW; Lim, MS; Moh, KJ; Ho, ATS

来源：Optical Engineering, 2004, 43(11): 2493-2494.

DOI：10.1117/1.1802272

• image reconstruction
• joint transforms
• holograms
• Fourier transforms

A hybrid encryption and decryption technique for optical information security is proposed. In this method, the iterative Fourier transform algorithm is employed to optimize the encrypted hologram and the decryption key as binary phase-only diffractive optical elements, which were fabricated by electron-beam lithography. In a simple optical setup, the optical decryption is implemented by superimposing the encrypted hologram and the decryption key. Numerical simulation and optical experiment confirm the proposed technique as a simple and easy implementation for optical decryption.

• 出版日期2004-11
• 单位南阳理工学院