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Proceedings Paper

Optical encryption by means of the Talbot array illuminator
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Paper Abstract

The work presents the encryption process in the optical arrangement with the Talbot array illuminator (TAIL). The object to be encrypted is multiplicated, forming a periodical structure. Then the obtained periodical structure is placed in an optical set-up with a TAIL. The encryption is based on the Fresnel diffraction behind the TAIL. The encrypted image has a form resembling an elementary cell of the amplitude sampling filter. The decryption is based on the Talbot effect.

Paper Details

Date Published: 23 September 2005
PDF: 6 pages
Proc. SPIE 5954, Optical Security Systems, 59540I (23 September 2005); doi: 10.1117/12.622095
Show Author Affiliations
John Fredy Barrera, Univ. de Antioquia (Colombia)
Rodrigo Henao, Univ. de Antioquia (Colombia)
Zbigniew Jaroszewicz, Institute of Applied Optics (Poland)
National Institute of Telecommunications (Poland)
Andrzej Kolodziejczyk, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 5954:
Optical Security Systems
Zbigniew Jaroszewicz; Sergei Y. Popov; Frank Wyrowski, Editor(s)

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