Security optical data storage in Fourier holograms

Wei Chia Su, Yu Wen Chen*, Yu Jen Chen, Shiuan-Huei Lin, Li Karn Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

We have proposed and demonstrated a holographic security storage system that is implemented with a shift multiplexing technique. The security function of this storage system is achieved by using a microdiffuser (MD) for random phase encoding of the reference beams. The apparatus of random phase encoding in this system offers an additional and flexible function during the recording processes. The system can generate holographic security memory or nonsecurity holographic memory via using the MD or not. The storage capacity and the average signal-to-noise value of the security storage system are 16 bits/μm 2 and 3.5, respectively. Lateral shifting selectivity in this holographic security storage system is theoretically analyzed and experimentally investigated.

Original languageEnglish
Pages (from-to)1297-1303
Number of pages7
JournalApplied Optics
Volume51
Issue number9
DOIs
StatePublished - 20 Mar 2012

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    Su, W. C., Chen, Y. W., Chen, Y. J., Lin, S-H., & Wang, L. K. (2012). Security optical data storage in Fourier holograms. Applied Optics, 51(9), 1297-1303. https://doi.org/10.1364/AO.51.001297