Yonetani Yusuke, Nitta Kouichi, Matoba Osamu
Department of Computer Science and Systems Engineering, Kobe University, Rokkodai 1-1, Nada, Kobe 657-8501, Japan.
Appl Opt. 2010 Feb 1;49(4):694-700. doi: 10.1364/AO.49.000694.
We evaluate numerically the effect of shrinkage of photopolymer on the bit error rate or signal-to-noise ratio in a reflection-type holographic data storage system with angular multiplexing. In the evaluation, we use a simple model where the material is divided into layered structures and then the shrinkage rate is proportional to the intensity in each layer. We present the effectiveness of the proposed model from the experimental results in the recording of the plane waves both in a transmission-type hologram and a reflection-type one. Several kinds of shrinkage rates are used to evaluate the characteristics of angular multiplexing in the reflection-type holographic memory.
我们通过数值方法评估了在具有角度复用的反射型全息数据存储系统中，光聚合物收缩对误码率或信噪比的影响。在评估过程中，我们使用了一个简单模型，即将材料划分为分层结构，然后收缩率与每层中的强度成正比。我们从透射型全息图和反射型全息图中平面波记录的实验结果展示了所提出模型的有效性。使用了几种收缩率来评估反射型全息存储器中角度复用的特性。
