Optical image encryption based on polarization encoding by liquid crystal spatial light modulators

Han Yen Tu; Chau Jern Cheng; Mao Ling Chen

doi:10.1088/1464-4258/6/6/005

Optical image encryption based on polarization encoding by liquid crystal spatial light modulators

Han Yen Tu^*, Chau Jern Cheng, Mao Ling Chen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

This work describes a polarization-encoding scheme with cascaded liquid crystal spatial light modulators for two-dimensional exclusive OR logic encryption. The transfer characteristic of the encryption system is analysed to determine suitable polarization modulation for optical realization. Performance is compared across systems that use various displays, including twisted nematic, supertwisted nematic and homogeneously parallel aligned nematic liquid crystal devices. Experiments show that binary image encryption/decryption is accomplished with fair image quality by choosing the orientation of the polarization and modulation conditions. Both simulated and experimental results are presented and discussed.

Original language	English
Pages (from-to)	524-528
Number of pages	5
Journal	Journal of Optics A: Pure and Applied Optics
Volume	6
Issue number	6
DOIs	https://doi.org/10.1088/1464-4258/6/6/005
Publication status	Published - 2004 Jun
Externally published	Yes

Keywords

Liquid crystal displays
Optical encryption
Polarization-encoding

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1088/1464-4258/6/6/005

Cite this

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abstract = "This work describes a polarization-encoding scheme with cascaded liquid crystal spatial light modulators for two-dimensional exclusive OR logic encryption. The transfer characteristic of the encryption system is analysed to determine suitable polarization modulation for optical realization. Performance is compared across systems that use various displays, including twisted nematic, supertwisted nematic and homogeneously parallel aligned nematic liquid crystal devices. Experiments show that binary image encryption/decryption is accomplished with fair image quality by choosing the orientation of the polarization and modulation conditions. Both simulated and experimental results are presented and discussed.",

keywords = "Liquid crystal displays, Optical encryption, Polarization-encoding",

author = "Tu, {Han Yen} and Cheng, {Chau Jern} and Chen, {Mao Ling}",

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AU - Cheng, Chau Jern

AU - Chen, Mao Ling

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N2 - This work describes a polarization-encoding scheme with cascaded liquid crystal spatial light modulators for two-dimensional exclusive OR logic encryption. The transfer characteristic of the encryption system is analysed to determine suitable polarization modulation for optical realization. Performance is compared across systems that use various displays, including twisted nematic, supertwisted nematic and homogeneously parallel aligned nematic liquid crystal devices. Experiments show that binary image encryption/decryption is accomplished with fair image quality by choosing the orientation of the polarization and modulation conditions. Both simulated and experimental results are presented and discussed.

AB - This work describes a polarization-encoding scheme with cascaded liquid crystal spatial light modulators for two-dimensional exclusive OR logic encryption. The transfer characteristic of the encryption system is analysed to determine suitable polarization modulation for optical realization. Performance is compared across systems that use various displays, including twisted nematic, supertwisted nematic and homogeneously parallel aligned nematic liquid crystal devices. Experiments show that binary image encryption/decryption is accomplished with fair image quality by choosing the orientation of the polarization and modulation conditions. Both simulated and experimental results are presented and discussed.

KW - Liquid crystal displays

KW - Optical encryption

KW - Polarization-encoding

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Optical image encryption based on polarization encoding by liquid crystal spatial light modulators

Abstract

Keywords

ASJC Scopus subject areas

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