Full phase encoding for digital holographic encryption using liquid crystal spatial light modulators

Han Yen Tu*, Jen Shiun Chiang, Jin Wen Chou, Chau-Jern Cheng

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    This work describes a full phase encoding technique for digital holographic encryption based on liquid crystal spatial light modulators, which are operated in the phase modulation mode to perform the phase-encoding object and the double random phase key masks for optical Fresnel encryption. The architecture of four-step phase-shifting digital holography is used to generate the double key holograms for implementing the encryption and decryption. Experimental results show the feasibility of the full phase encoding encryption with double keys for high-data-security properties. The proposed encryption system with electrically addressed spatial light modulators provides the flexibility of the key mask design by on-line processing.

    Original languageEnglish
    Pages (from-to)8838-8843
    Number of pages6
    JournalJapanese Journal of Applied Physics
    Volume47
    Issue number12
    DOIs
    Publication statusPublished - 2008 Dec 19

    Keywords

    • Digital holography
    • Encryption
    • Phase encoding
    • Spatial light modulators

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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