Koppa Pál
Budapest University of Technology and Economics, Department of Atomic Physics, Budafoki út 8, Budapest, Hungary.
Appl Opt. 2007 Jun 10;46(17):3561-71. doi: 10.1364/ao.46.003561.
A new phase-to-amplitude data page conversion method is proposed for efficient recovery of the data encoded in phase-modulated data pages used in holographic storage and optical encryption. The method is based on the interference between the data page and its copy shifted by an integral number of pixels. Key properties such as Fourier plane homogeneity, bit error rate, and positioning tolerances are investigated by computer modeling, and a comparison is provided with amplitude-modulated data page holographic storage with and without static phase masks. The feasibility and the basic properties of the proposed method are experimentally demonstrated. The results show that phase-modulated data pages can be used efficiently with reduced system complexity.
提出了一种新的相位到幅度数据页转换方法，用于高效恢复全息存储和光学加密中使用的相位调制数据页所编码的数据。该方法基于数据页与其像素整数移位副本之间的干涉。通过计算机建模研究了诸如傅里叶平面均匀性、误码率和定位公差等关键特性，并与有无静态相位掩模的幅度调制数据页全息存储进行了比较。实验证明了该方法的可行性和基本特性。结果表明，相位调制数据页可以在降低系统复杂度的情况下有效使用。
