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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/875

Title: A polarization encoded optical encryption system using ferroelectric spatial light modulator
Authors: Unnikrishnan, G
Pohit, M
Singh, K
Keywords: Polarization
Encryption
Spatial light modulator
Exclusive-OR operation
Issue Date: 2000
Citation: Optics Communications, 185(1-3), 25-31
Abstract: 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.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/875
Appears in Collections:Physics

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