1 April 1998 Fringe-adjusted nonlinear incoherent-erasure joint transform correlation
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Abstract
A new all-optical nonlinear fringe-adjusted joint transform correlation technique is proposed. The proposed scheme is based on incoherent-to-coherent conversion with the erasure of a four-wave mixing arrangement in a real-time photorefractive media. This technique is very fast because it generates the correlation output in one step and all intermediate processing is performed in the optical domain. Furthermore, this technique eliminates the problems due to nonlinearities associated with the square law devices and spatial light modulators used for recording the joint power spectrum. Computer simulation results show that the proposed joint transform correlator yields superior performance when compared to the alternate joint transform correlator architectures.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mohammad S. Alam and Jehad Khoury "Fringe-adjusted nonlinear incoherent-erasure joint transform correlation", Proc. SPIE 3402, Optical Information Science and Technology (OIST97): Optical Memory and Neural Networks, (1 April 1998); doi: 10.1117/12.304967; https://doi.org/10.1117/12.304967
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