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Proceedings Paper

Decoding software of computer instruction codified as Fourier holograms in a LiNbO3:Fe
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Paper Abstract

In this work, we describe a special software developed to interpret computer instructions codified as information binary pages; which are stored as Fourier holograms in a LiNbO3:Fe photorefractive crystal. The crystal has stored a computer sequence program, as a spatial distribution of Fourier holograms. To read each computer instructions, the position of the crystal is changed by an electro-mechanical setup. The holograms output images of each information binary page are captured over sampled as an image by a CCD camera in the output plane. Due to the spatial displacement of the crystal, the hologram output images are not focused on the same output plane. Therefore, we obtained a set of defocused captured images; which might produces a miss interpretation of the corresponding instructions. We solve this problem by pre-processing the image before decoding it, the proposed software solves the focusing problem with the implementation of a digital spatial filter and some special criteria expressed as a mathematical algorithm. After that, the program decodes each computer instructions from its information binary page to be executed as an electronic digital sequential system.

Paper Details

Date Published: 3 September 2008
PDF: 8 pages
Proc. SPIE 7072, Optics and Photonics for Information Processing II, 70721A (3 September 2008); doi: 10.1117/12.786676
Show Author Affiliations
E. E. Rodríguez Vázquez, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
E. Tepichín-Rodríguez, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)

Published in SPIE Proceedings Vol. 7072:
Optics and Photonics for Information Processing II
Abdul Ahad Sami Awwal; Khan M. Iftekharuddin; Bahram Javidi, Editor(s)

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