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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 24680–24691

High-flexibility optical encryption via aperture movement

Wen Chen, Guohai Situ, and Xudong Chen  »View Author Affiliations

Optics Express, Vol. 21, Issue 21, pp. 24680-24691 (2013)

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We present a new method using single-path beam-propagation-based imaging via aperture movement for optical encryption. The aperture is sequentially moved in the transverse domain, and a series of diffraction intensity patterns (i.e., ciphertexts) are correspondingly recorded during optical encryption. An iterative phase retrieval algorithm is applied for the decryption. It is illustrated that the proposed optical security system possesses several significant advantages, such as high flexibility and high security. The proposed optical security system also provides an effective channel to control information assignment and authentication.

© 2013 Optical Society of America

OCIS Codes
(110.1650) Imaging systems : Coherence imaging
(060.4785) Fiber optics and optical communications : Optical security and encryption
(100.4998) Image processing : Pattern recognition, optical security and encryption

ToC Category:
Image Processing

Original Manuscript: August 15, 2013
Revised Manuscript: September 5, 2013
Manuscript Accepted: September 17, 2013
Published: October 8, 2013

Wen Chen, Guohai Situ, and Xudong Chen, "High-flexibility optical encryption via aperture movement," Opt. Express 21, 24680-24691 (2013)

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