High-flexibility optical encryption via aperture movement

Wen Chen, Guohai Situ, Xudong Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

49 Citations (Scopus)


We present a new method using single-path beam-propagationbased 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.
Original languageEnglish
Pages (from-to)24680-24691
Number of pages12
JournalOptics Express
Issue number21
Publication statusPublished - 21 Oct 2013
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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