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Title: Security Optical Data Storage in Fourier Holograms
Authors: Su, Wei-Chia;Chen, Yu-Wen;Chen, Yu-Jen;Lin, Shiuan-Huei;Wang, Li-Karn
Contributors: 光電科技研究所
Date: 2012-03
Issue Date: 2014-04-01T03:57:01Z
Publisher: Optical Society of America
Abstract: We have proposed and demonstrated a holographic security storage system that is implemented with a shift multiplexing technique. The security function of this storage system is achieved by using a microdiffuser (MD) for random phase encoding of the reference beams. The apparatus of random phase encoding in this system offers an additional and flexible function during the recording processes. The system can generate holographic security memory or nonsecurity holographic memory via using the MD or not. The storage capacity and the average signal-to-noise value of the security storage system are 16 bits/μm 2 and 3.5, respectively. Lateral shifting selectivity in this holographic security storage system is theoretically analyzed and experimentally investigated.
Relation: Applied Optics, 51(9): 1297-1303
Appears in Collections:[Graduate Institute of Photonics Technologies] Periodical Articles

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