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NCUEIR > College of Science > Graduate Institute of Photonics Technologies > Periodical Articles > Item 987654321/18205

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/18205

Title:	Optical Security Using a Random Binary Phase Code in Volume Holograms
Authors:	Wang, Bo;Su, Wei-Chia;Sun, Ching-Cherngr;Chang, Jung-Yang
Contributors:	光電科技研究所
Keywords:	Volume holography;Volume holographic storage;Optical security
Date:	2004-09
Issue Date:	2014-04-01T03:56:45Z
Publisher:	Society of Photo-Optical Instrumentation Engineers
Abstract:	We propose a novel method for optical security by using a randomly selected binary phase code. The phase code is recorded with holographic volume gratings, and the recording material can be regarded as an optical lock, while the original phase code acts as the key. When an arbitrary phase code is used for decryption, the decryption probability is less than 10–10 when the phase code contains only five rows. The decryption probability decreases dramatically as the row number of the code or the threshold value increases. Furthermore, the security system performs good tolerance for data loss of the key. Both the theory and experiment are demonstrated.
Relation:	Optical Engineering, 43(9): 2048-2052
Appears in Collections:	[Graduate Institute of Photonics Technologies] Periodical Articles

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