Digital image multiplexing/demultiplexing method using spatial spectral diffusion and virtual phase conjugation technique for reduction of dynamic range consumption in holographic medium
Digital image multiplexing/demultiplexing method using spatial spectral diffusion and virtual phase conjugation technique for reduction of dynamic range consumption in holographic medium
复制标题
DOI：
10.7567/jjap.56.09na07
复制
发表时间：
2017-09
影响因子：
1.5
通讯作者：
Y. Goto;A. Okamoto;M. Takabayashi;Kazuhisa Ogawa;A. Tomita
中科院分区：
文献类型：
--
作者：
Y. Goto;A. Okamoto;M. Takabayashi;Kazuhisa Ogawa;A. Tomita
全息数据存储（HDS）系统中的记录密度由记录介质的动态范围决定。如果以小曝光记录全息图，则每个全息图的动态范围的消耗量减少，并且可以提高记录密度。在本报告中，我们提出了一种使用空间光谱扩散和虚拟相位共轭技术的数字图像复用/解复用方法，以减少记录介质中动态范围的消耗量。在我们的方法中，与 HDS 的一般多路复用方法不同，在记录之前使用光束组合器对这些信号进行多路复用，从而将多个信号同时记录在介质中。然后，可以利用随机漫射器和相位共轭光的特性来独立地再现每个原始信号。在模拟中，我们证实我们的方法可以提高记录密度，因为动态范围的消耗减少了。
The recording density in holographic data storage (HDS) systems is determined by the dynamic range of the recording medium. If a hologram is recorded with a small exposure, the consumption amount of the dynamic range per hologram is reduced, and the recording density can be improved. In this report, we propose a digital image multiplexing/demultiplexing method using spatial spectral diffusion and a virtual phase conjugation technique to reduce the consumption amount of the dynamic range in a recording medium. In our method, multiple signals are simultaneously recorded in a medium by multiplexing those signals using a beam combiner before recording, unlike the general multiplexing method of HDS. Then, each original signal can be reproduced independently by utilizing the property of a random diffuser and a phase-conjugated light. In the simulation, we confirmed that our method can improve the recording density because the consumption of the dynamic range is reduced.