CNCS Center for Nonlinear and Complex Systems
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Publications [#280492] of David J. Brady

Papers Published

  1. Sun, P-C; Fainman, Y; Mazurenko, YT; Brady, DJ, Space-time processing with photorefractive volume holography, Proc. Spie Int. Soc. Opt. Eng. (Usa), vol. 2529 (1995), pp. 157-170, San Diego, CA, USA
    (last updated on 2019/11/13)

    Photorefractive volume holography for processing ultrashort optical pulses carrying spatial, temporal and spatio-temporal optical information is introduced. These new holographic methods can process 4-dimensional information that in addition to the 3 spatial coordinates also include the temporal evolution of optical signals on nanosecond to femtosecond scale. Photorefractive volume holographic materials provide the medium necessary for recording and reconstruction in real-time. Applications of direct time domain and spectral domain holography for image processing, temporal matched filtering, optical pulse shaping, 3-D optical storage, and optical interconnects are discussed. Furthermore, the combined space-time holographic processing that allows the conversion between spatial and temporal optical information carrying channels is introduced. This method is used to demonstrate experimentally parallel-to-serial and serial-to-parallel data conversion for 1-D images and image-format data transmission. This holographic processors provide the advantages of self-referenced signal transmission and self-compensation for optical dispersion induced by the holographic materials, communication channel, as well as other optical components. Finally, future research directions for optical information processing with complex spatio-temporal signals are identified and discussed

    data conversion;high-speed optical techniques;holographic storage;image matching;image reconstruction;matched filters;optical dispersion;optical information processing;optical interconnections;photorefractive effect;