Method of Phase and Amplitude Modulation/Demodulation Using Datapages with Embedded Phase-Shift for Holographic Data Storage
Method of Phase and Amplitude Modulation/Demodulation Using Datapages with Embedded Phase-Shift for Holographic Data Storage
复制标题
使用具有嵌入式相移的数据页进行全息数据存储的相位和幅度调制/解调方法
DOI：
10.7567/jjap.52.09ld04
复制
发表时间：
2013
影响因子：
1.5
通讯作者：
A. Okamoto
中科院分区：
文献类型：
--
作者：
M. Bunsen;Shuhei Umetsu;M. Takabayashi;A. Okamoto
提出了一种用于全息存储系统的多值相位和振幅调制物光束的相位和振幅检测技术。通常，物体光束的复振幅的空间分布可以通过相移干涉测量来精确地检测，其中用于干涉测量的参考波的相位在数据页检索过程中在时间上或空间上改变。另一方面，我们的技术允许快速，准确，可行的相位和幅度解调通过初步嵌入相移到相位信号的数据页在记录过程中。该技术将显著提高全息存储系统的数据传输速率和振动容限，因为携带数据页的物体光束的复振幅可以通过单次图像捕获来检测。用于数据页重放的光学系统也将被简化，因为在数据检索期间不需要使用任何相移设备。实验证明了相位调制数据页的单次检测。
A technique for the phase and amplitude detection of object beams with multivalued phase and amplitude modulation is proposed for holographic storage systems. Generally, the spatial distribution of the complex amplitude of the object beam can be precisely detected by phase-shifting interferometric measurements in which the phase of the reference wave for interferometry is temporally or spatially changed in the datapage retrieval process. On the other hand, our technique allows fast, accurate, and feasible phase and amplitude demodulations by preliminary embedding phase shift into the phase signal of the datapage during recording. This technique will significantly improve the data transfer rate and vibration tolerance of the holographic storage system because the complex amplitudes of the object beam carrying datapages can be detected by single-shot image capturing. The optical system for datapage replay will also be simplified because there is no need to use any phase-shifting device during data retrieval. The single-shot detection of the phase-modulated datapage is experimentally demonstrated.
影响因子：
4
作者：
Awatsuji, Y;Sasada, M;Kubota, T
通讯作者：
Kubota, T