A secure data storage system based on phase-encoded thin polarization holograms

Autor:	Emke Lrincz, Tamas Ujvari, Szilárd Sajti, Pál Koppa, Peter Varhegyi, Monika Lovasz, Péter Richter
Rok vydání:	2004
Předmět:	Spatial light modulator business.industry Computer science Holography Data security Encryption Polarization (waves) Atomic and Molecular Physics and Optics law.invention Optics law Computer data storage Thin film business Phase modulation
Zdroj:	Journal of Optics A: Pure and Applied Optics. 6:401-411
ISSN:	1741-3567 1464-4258
DOI:	10.1088/1464-4258/6/4/017
Popis:	A novel secure data storage architecture based on phase-encoded, thin film, Fourier-type polarization holograms is reported. Efficient data encryption and verification can be obtained by phase modulation of the reference wave introduced by a phase-type spatial light modulator that is imaged onto the hologram plane. A physical model is formulated including phase-encoding, non-linear storage medium behaviour and features of the proposed optical system. A method is proposed and implemented in the form of a custom modelling tool for generating code sets optimal in terms of code number and security level. The utility of the architecture and the achievable security level are experimentally demonstrated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3383797082c9ceed5e1f7997597784d6 https://doi.org/10.1088/1464-4258/6/4/017 Zobrazit plný text záznamu