Compensation Method for Phase Fluctuation in Holographic Data Storage

被引:2
|
作者
Ishii, Norihiko [1 ]
Muroi, Tetsuhiko [1 ]
Kinoshita, Nobuhiro [1 ]
Kamijo, Koji [1 ]
Kikuchi, Hiroshi [1 ]
Shimidzu, Naoki [1 ]
机构
[1] NHK Japan Broadcasting Corp, Sci & Technol Res Labs, Setagaya Ku, Tokyo 1578510, Japan
关键词
MODULATION;
D O I
10.1143/JJAP.51.112502
中图分类号
O59 [应用物理学];
学科分类号
摘要
A method that records accurate information of an object beam is discussed. Before conducting our experiment, the effect of phase fluctuation was calculated using the coupled wave theory. Simulation results showed that the fringe amplitude decreased as the phase noise level increased. We propose a method for phase compensation even if a modulated object beam, which consists of black-and-white pixels, is used with a millisecond recording time. A recording experiment was conducted, in which even pages were without compensation and odd pages were with compensation with 100 angle multiplexing. The obtained results indicate that the mean brightness was increased by 2 x 10(5), and the mean error count for each page was reduced from 17 to 13 by improving the diffraction efficiency. (C) 2012 The Japan Society of Applied Physics
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页数:5
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