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Title: Correlator-Aided Alignment of Phase Key in Encrypted Holographic Storage Systems
Authors: Su, Wei-Hung;Su, Wei-Chia;Kao, Hung-Jei;Chen, Chien-Yue
Contributors: 光電科技研究所
Keywords: Volume holographic storage;Encryption;Correlator;Alignment;Speckle wave
Date: 2007-12
Issue Date: 2014-04-01T03:56:50Z
Publisher: Elsevier
Abstract: An encrypted holographic scheme with a compact alignment system for a phase key is proposed. Alignment for a phase key is performed by a holographic correlator. A filter in the correlator system contains the phase information used for encryption. Thus, it can be used to check the authorization of the phase key. Owing to the shift-invariant property of the holographic correlator, the location of the correlation peak is highly related to the alignment of the phase key. Therefore, the phase key can be repositioned on the desired location by searching for the specific position of the correlation peak. With the help of the correlator, alignment of the phase key can be done in 1 min. Experimental results using a correlator system in support of our proposed idea are demonstrated as well.
Relation: Optics Communications, 280(1): 27-32
Appears in Collections:[Graduate Institute of Photonics Technologies] Periodical Articles

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