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Deterministic Phase Encoded Holographic Data Storage Using Lenticular Lens Array |
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| Authors: | Chi Ching Chang Gu Liang Chen Wen Kuei Young Ching Yang Lin Hon Fai Yau |
| Institution: | (1) Department of Computer Science and Information Engineering, Ming Dao University, Peetow, Chunghua, 52345, Taiwan, R.O.C.;(2) School of Defense Science, National Defense University, Tashi, Taoyuan, 33509, Taiwan, R.O.C.;(3) Department of Optics and Photonics, National Central University, Chungli, Taoyuan, 33201, Taiwan, R.O.C. |
| Abstract: | This work presents a novel optical holographic encrypted data storage approach based on a phase encoding multiplexed scheme. In the proposed data storage scheme, patterns to be encrypted are stored holographically in a photorefractive LiNbO3:Fe crystal using a lenticular lens array (LLA) sheet phase-encoded multiplexing. Experimental results reveal that rotating an LLA placed as a phase modulator in the path of the reference beam is a simple but effective method of increasing the phase addresses for holographic memory in a crystal. Combining this rotational multiplexing with two-axis rotating multiplexing provides further data storage and data encryption capacity. |
| Keywords: | data storage phase encoding lenticular lens array encryption holographic memory |
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