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Optical Engineering

Hybrid encryption and decryption technique using microfabricated diffractive optical elements
Author(s): Xiaocong Yuan; Shaohua Tao; Wai Chye Cheong; Yuwen Chen; M. S. Lim; Jonathan Kenjin Moh; Anthony Tung Shuen Ho
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Paper Abstract

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.

Paper Details

Date Published: 1 November 2004
PDF: 502 pages
Opt. Eng. 43(11) doi: 10.1117/1.1802272
Published in: Optical Engineering Volume 43, Issue 11
Show Author Affiliations
Xiaocong Yuan, Nanyang Technological Univ. (Singapore)
Shaohua Tao, Nanyang Technological Univ. (Singapore)
Wai Chye Cheong, Nanyang Technological Univ. (Singapore)
Yuwen Chen, Nanyang Technological Univ. (Singapore)
M. S. Lim, Nanyang Technological Univ. (Singapore)
Jonathan Kenjin Moh, Nanyang Technological Univ. (Singapore)
Anthony Tung Shuen Ho, Nanyang Technological Univ. (Singapore)

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