Polarization encoding for optical encryption using twisted nematic liquid crystal spatial light modulators

Chau-Jern Cheng, Mao Ling Chen

    Research output: Contribution to journalArticle

    29 Citations (Scopus)

    Abstract

    We propose and demonstrate a polarization-encoded encryption system based on a doubly exclusive OR logic (XOR) operation using cascaded twisted nematic liquid crystal spatial light modulators. The transfer characteristic of the encryption system is analyzed by the Jones matrix method to yield the suitable polarization modulation for optical realization. An experimental demonstration reveals that the binary image encryption/decryption is achieved with fair image quality by selecting the orientation of polarization and the modulation conditions. Both analytical and experimental results are presented and discussed.

    Original languageEnglish
    Pages (from-to)45-52
    Number of pages8
    JournalOptics Communications
    Volume237
    Issue number1-3
    DOIs
    Publication statusPublished - 2004 Jul 1

    Fingerprint

    polarization modulation
    Nematic liquid crystals
    light modulators
    Cryptography
    coding
    liquid crystals
    Polarization
    polarization
    Modulation
    matrix methods
    logic
    Binary images
    modulation
    Image quality
    Demonstrations
    Spatial light modulators

    Keywords

    • Liquid crystal display
    • Optical encryption
    • Spatial light modulator

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Cite this

    Polarization encoding for optical encryption using twisted nematic liquid crystal spatial light modulators. / Cheng, Chau-Jern; Chen, Mao Ling.

    In: Optics Communications, Vol. 237, No. 1-3, 01.07.2004, p. 45-52.

    Research output: Contribution to journalArticle

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