Shift-Peristrophic Multiplexing for High Density Holographic Data Storage

Applied Sciences

Zenta Ushiyama¹  Hiroyuki Kurata¹  Yu Tsukamoto¹  Shuhei Yoshida¹ 

[1] Department of Applied Electronics, Tokyo University of Science, 6-3-1, Niijuku, Katsushika-ku, Tokyo 125-8585, Japan;

关键词: holographic data storage;    shift multiplexing;    spherical wave;    peristrophic;   

DOI  :  10.3390/app4020148

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland