A polarization encoded optical encryption system using ferroelectric spatial light modulator

被引：61

作者：

Unnikrishnan, G ^{[1
]}

Pohit, M ^{[1
]}

Singh, K ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Photon Grp, New Delhi 110016, India

来源：

OPTICS COMMUNICATIONS | 2000年 / 185卷 / 1-3期

关键词：

polarization; encryption; spatial light modulator; exclusive-OR operation;

D O I：

10.1016/S0030-4018(00)00977-9

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss the principle, and experimentally demonstrate an optical encryption system that uses the polarization of light to encrypt a binary image. The encryption is done by an exclusive-OR (XOR) operation between the image and a random phase code (key to encrypted data). The XOR operation is done in the polarization domain of coherent light by using two ferroelectric liquid crystal spatial light modulators. The information encoded as polarization states of coherent light is converted to intensity variations by using a polarizer. The decryption of the encrypted data is done by a second XOR operation between the encrypted image and the key. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：25 / 31

页数：7

共 25 条

[1] Real-time optical aberration correction with a ferroelectric liquid-crystal spatial light modulator [J].

Birch, PM ;

Gourlay, J ;

Love, GD ;

Purvis, A .

APPLIED OPTICS, 1998, 37 (11) :2164-2169

[2] Two-dimensional polarization encoding with a phase-only liquid-crystal spatial light modulator [J].

Davis, JA ;

McNamara, DE ;

Cottrell, DM ;

Sonehara, T .

APPLIED OPTICS, 2000, 39 (10) :1549-1554

[3]

*DISPL INC, SLM DEV KIT US MAN

[4] Optical key bit stream generator [J].

Han, JW ;

Lee, SH ;

Kim, ES .

OPTICAL ENGINEERING, 1999, 38 (01) :33-38

[5] Optical image encryption based on XOR operations [J].

Han, JW ;

Park, CS ;

Ryu, DH ;

Kim, ES .

OPTICAL ENGINEERING, 1999, 38 (01) :47-54

[6] Noise performance of double-phase encryption compared to XOR encryption [J].

Javidi, B ;

Bernard, L ;

Towghi, N .

OPTICAL ENGINEERING, 1999, 38 (01) :9-19

[7] Performance of double phase encoding encryption technique using binarized encrypted images [J].

Javidi, B ;

Sergent, A ;

Ahouzi, E .

OPTICAL ENGINEERING, 1998, 37 (02) :565-569

[8] Securing information with optical technologies [J].

Javidi, B .

PHYSICS TODAY, 1997, 50 (03) :27-32

[9] Securing information by use of digital holography [J].

Javidi, B ;

Nomura, T .

OPTICS LETTERS, 2000, 25 (01) :28-30

[10] Realizing optical logic with a smart-pixel spatial light modulator [J].

Kane, JS ;

Grycewicz, TJ ;

Kincaid, TG .

APPLIED OPTICS, 1996, 35 (08) :1249-1252

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