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

Chau Jern Cheng; Mao Ling Chen

doi:10.1016/j.optcom.2004.03.060

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

Chau Jern Cheng^*, Mao Ling Chen

^*Corresponding author for this work

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

31 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 language	English
Pages (from-to)	45-52
Number of pages	8
Journal	Optics Communications
Volume	237
Issue number	1-3
DOIs	https://doi.org/10.1016/j.optcom.2004.03.060
Publication status	Published - 2004 Jul 1
Externally published	Yes

Keywords

Liquid crystal display
Optical encryption
Spatial light modulator

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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10.1016/j.optcom.2004.03.060

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title = "Polarization encoding for optical encryption using twisted nematic liquid crystal spatial light modulators",

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.",

keywords = "Liquid crystal display, Optical encryption, Spatial light modulator",

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

note = "Funding Information: The authors would like to thank the National Science Council of the Republic of China, Taiwan for financially supporting this research under Contract No. NSC91-2215-E-027-007.",

year = "2004",

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doi = "10.1016/j.optcom.2004.03.060",

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journal = "Optics Communications",

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TY - JOUR

T1 - Polarization encoding for optical encryption using twisted nematic liquid crystal spatial light modulators

AU - Cheng, Chau Jern

AU - Chen, Mao Ling

N1 - Funding Information: The authors would like to thank the National Science Council of the Republic of China, Taiwan for financially supporting this research under Contract No. NSC91-2215-E-027-007.

PY - 2004/7/1

Y1 - 2004/7/1

N2 - 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.

AB - 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.

KW - Liquid crystal display

KW - Optical encryption

KW - Spatial light modulator

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DO - 10.1016/j.optcom.2004.03.060

M3 - Article

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SN - 0030-4018

VL - 237

SP - 45

EP - 52

JO - Optics Communications

JF - Optics Communications

IS - 1-3

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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