Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of the Optical Society of Korea
  • Vol. 20,
  • Issue 3,
  • pp. 358-362
  • (2016)

Optical Encryption of a Binary Image by Phase Modulation of the Wavefront

Open Access Open Access

Abstract

We present a new scheme for optical encryption of a binary image. In our method, the original binary data page is first divided into two identical pages. In each data page, the “on” and “off” pixels are represented by two discrete phases that are 90° apart. The first page corresponds to the phase conjugation of the second page, and vice versa. In addition, the wavefront of the two data pages is changed simultaneously from planar to spherical, for better encryption. The wavefront modification is represented by an extra phase shift, which is a function of position on the wavefront. In this way the two separate pages are both encrypted, and therefore the pages cannot be distinguished in a CCD. If the first page is used as an encrypted data page, then the second page is used as the decryption key, and vice versa. The decryption can be done by simply combining the two encrypted data pages. It is shown in our experiment that encryption and decryption can be fully accomplished in the optical domain.

© 2016 Optical Society of Korea

PDF Article
More Like This
Binary-tree encryption strategy for optical multiple-image encryption

Jiawang Yi and Guanzheng Tan
Appl. Opt. 55(20) 5280-5291 (2016)

Binary image encryption based on interference of two phase-only masks

Wei Jia, Fung Jacky Wen, Yuk Tak Chow, and Changhe Zhou
Appl. Opt. 51(21) 5253-5258 (2012)

Experimental study on optical image encryption with asymmetric double random phase and computer-generated hologram

Sixing Xi, Xiaolei Wang, Lipei Song, Zhuqing Zhu, Bowen Zhu, Shuai Huang, Nana Yu, and Huaying Wang
Opt. Express 25(7) 8212-8222 (2017)

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.


Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved