Decomposition storage of information based on computer-generated hologram interference and its application in optical image encryption

Authors
Guo, YK Huang, QZ Du, JL Zhang, YX
Citation
Yk. Guo et al., Decomposition storage of information based on computer-generated hologram interference and its application in optical image encryption, APPL OPTICS, 40(17), 2001, pp. 2860-2863
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
APPLIED OPTICS
ISSN journal
00036935 → ACNP
Volume
40
Issue
17
Year of publication
2001
Pages
2860 - 2863
Database
ISI
SICI code
0003-6935(20010610)40:17<2860:DSOIBO>2.0.ZU;2-Z
Abstract
An information-encryption method based on computer-generated hologram (CGH) interference is presented. In this method the original information is deco mposed into two parts, and then each part is encoded on a separate CGH. Whe n these two encoded CGHs are aligned and illuminated, a combined interferen ce pattern is formed. The original information is obtained from this patter n. It is impossible to decrypt the original information from one CGH alone; two matched CGHs must be put together to make it available. (C) 2001 Optic al Society of America.