標題: | Security optical data storage in Fourier holograms |
作者: | Su, Wei-Chia Chen, Yu-Wen Chen, Yu-Jen Lin, Shiuan-Huei Wang, Li-Karn 電子物理學系 Department of Electrophysics |
公開日期: | 20-三月-2012 |
摘要: | 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 micro-diffuser (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/mu m(2) and 3.5, respectively. Lateral shifting selectivity in this holographic security storage system is theoretically analyzed and experimentally investigated. (C) 2012 Optical Society of America |
URI: | http://dx.doi.org/10.1364/AO.51.001297 http://hdl.handle.net/11536/15798 |
ISSN: | 1559-128X |
DOI: | 10.1364/AO.51.001297 |
期刊: | APPLIED OPTICS |
Volume: | 51 |
Issue: | 9 |
起始頁: | 1297 |
結束頁: | 1303 |
顯示於類別: | 期刊論文 |