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Appl. Sci. 2014, 4(2), 148-157; doi:10.3390/app4020148

Shift-Peristrophic Multiplexing for High Density Holographic Data Storage

Department of Applied Electronics, Tokyo University of Science, 6-3-1, Niijuku, Katsushika-ku, Tokyo 125-8585, Japan
* Author to whom correspondence should be addressed.
Received: 21 November 2013 / Revised: 5 March 2014 / Accepted: 17 March 2014 / Published: 31 March 2014
(This article belongs to the Special Issue Optical Memory)
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Holographic data storage is a promising technology that provides very large data storage capacity, and the multiplexing method plays a significant role in increasing this capacity. Various multiplexing methods have been previously researched. In the present study, we propose a shift-peristrophic multiplexing technique that uses spherical reference waves, and experimentally verify that this method efficiently increases the data capacity. In the proposed method, a series of holograms is recorded with shift multiplexing, in which the recording material is rotated with its axis perpendicular to the material’s surface. By iterating this procedure, multiplicity is shown to improve. This method achieves more than 1 Tbits/inch2 data density recording. Furthermore, a capacity increase of several TB per disk is expected by maximizing the recording medium performance.
Keywords: holographic data storage; shift multiplexing; spherical wave; peristrophic holographic data storage; shift multiplexing; spherical wave; peristrophic
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Ushiyama, Z.; Kurata, H.; Tsukamoto, Y.; Yoshida, S.; Yamamoto, M. Shift-Peristrophic Multiplexing for High Density Holographic Data Storage. Appl. Sci. 2014, 4, 148-157.

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