Computer simulation of reflective volume grating holographic data storage.
Computer simulation of reflective volume grating holographic data storage.
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反射体光栅全息数据存储的计算机模拟。
DOI：
10.1364/josaa.24.002075
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Em Ke L Rincz
中科院分区：
文献类型：
--
作者：
Balázs Gombköt;P. Koppa;Attila Süt;Em Ke L Rincz
基于体积分方程的多层薄层实现，采用非傍轴数值模拟方法研究了反射型球面参考波体全息图的移位选择性。该方法可以很容易地在多台计算机上并行化。结果表明，在我们的参数设置下，由于读出位移引起的衍射效率的下降既没有布拉格零点，也没有振荡。这与我们早期对较小的透射全息图的研究一致。采用相同的方法，结合稀疏调制块编码和相关解码，对移位复用全息图的全息图间串扰进行了建模。计算信噪比和原始误码率值。
The shift selectivity of a reflective-type spherical reference wave volume hologram is investigated using a nonparaxial numerical modeling based on a multiple-thin-layer implementation of a volume integral equation. The method can be easily parallelized on multiple computers. According to the results, the falloff of the diffraction efficiency due to the readout shift shows neither Bragg zeros nor oscillation with our parameter set. This agrees with our earlier study of smaller and transmissive holograms. Interhologram cross talk of shift-multiplexed holograms is also modeled using the same method, together with sparse modulation block coding and correlation decoding of data. Signal-to-noise ratio and raw bit error rate values are calculated.