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

E. E. Rodríguez Vázquez; E. Tepichín-Rodríguez

doi:10.1117/12.786676

3 September 2008 Decoding software of computer instruction codified as Fourier holograms in a LiNbO₃:Fe

E. E. Rodríguez Vázquez, E. Tepichín-Rodríguez

Proceedings Volume 7072, Optics and Photonics for Information Processing II; 70721A (2008) https://doi.org/10.1117/12.786676
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

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.

Citation Download Citation

E. E. Rodríguez Vázquez and E. Tepichín-Rodríguez "Decoding software of computer instruction codified as Fourier holograms in a LiNbO₃:Fe", Proc. SPIE 7072, Optics and Photonics for Information Processing II, 70721A (3 September 2008); https://doi.org/10.1117/12.786676

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