System modeling and optimization of Fourier holographic memory.
A new fast-Fourier-transform-based model of a page-oriented holographic data-storage system is presented. The model accounts for essential system and storage material features (e.g. diffraction, noises, and saturation) and provides reliable results in the form of output images, histograms, or bit-error rates. The model is built on a modular basis and provides the possibility of working with different system versions, key components, and storage materials. Applications of the method are presented through examples of optimization of the data density, reference beam size at Gaussian beam illumination, and calculation of the storage medium's positioning tolerances in accordance with the results of test measurements.
Várhegyi
Peter
P
Department of Atomic Physics, Budapest University of Technology and Economics, Budafoki ut 8, Budapest, 1111, Hungary. pvarhe@math.bme.hu
Koppa
Pál
P
Ujhelyi
Ferenc
F
Lorincz
Emoke
E