Speckle-shift multiplexing along axial direction in reflection-type holographic memory

被引:6
|
作者
Miura, Masato [1 ]
Matoba, Osamu [1 ]
Nitta, Kouichi [1 ]
Yoshimura, Takeaki [1 ]
机构
[1] Kobe Univ, Grad Sch Sci & Technol, Kobe, Hyogo 6578501, Japan
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2007年 / 46卷 / 6B期
关键词
volume holographic memory; speckle-shift recording; three-dimensional multiple recording; reflection hologram; random-phase mask; DISK MEMORY;
D O I
10.1143/JJAP.46.3832
中图分类号
O59 [应用物理学];
学科分类号
摘要
in reflection-type holographic memory, speckle-shift multiple recording along the axial direction of a storage medium is investigated experimentally and numerically. We record three data pages along the axial direction of an iron-doped lithium niobate medium with a thickness of 0.5 mm and an interval of the first null distance of shift selectivity, and each hologram was read out at the recording position. We also numerically evaluate the multiple recording along the axial direction. The numerical analysis supports the fact that the speckle size determines the three-dimensional recording interval. The numerical results are in qualitative agreement with the experimental results. We numerically examine the bit error rate as a function of the recording interval. The results show that multiplexing along the axial direction can increase the storage capacity.
引用
收藏
页码:3832 / 3836
页数:5
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