title: Experimental study on optical image encryption with asymmetric double random phase and computer-generated hologram.
abstract: Optical image encryption, especially double-random-phase-based, is of great interest in information security. In this work, we experimentally demonstrate the security and feasibility of optical image encryption with asymmetric double random phase and computer-generated hologram (CGH) by using spatial light modulator. First of all, the encrypted image modulated by asymmetric double random phase is numerically encoded into real-value CGH. Then, the encoded real-value CGH is loaded on the spatial light modulator and optically decrypted in self-designed experimental system. Experimental decryption results are in agreement with numerical calculations under the prober/mistaken phase keys condition. This optical decryption technology opens a window of optical encryption practical application and shows great potential for digital multimedia product copyright protection and holographic false trademark.
authors.forename: Sixing
authors.initials: S
authors.lastname: Xi
authors.forename: Xiaolei
authors.initials: X
authors.lastname: Wang
authors.forename: Lipei
authors.initials: L
authors.lastname: Song
authors.forename: Zhuqing
authors.initials: Z
authors.lastname: Zhu
authors.forename: Bowen
authors.initials: B
authors.lastname: Zhu
authors.forename: Shuai
authors.initials: S
authors.lastname: Huang
authors.forename: Nana
authors.initials: N
authors.lastname: Yu
authors.forename: Huaying
authors.initials: H
authors.lastname: Wang