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Thin photorefractive‐crystal‐based joint transform processor
Author(s) -
Alam Mohammad S.,
Kurtzweg Eric
Publication year - 2000
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/1098-2760(20000805)26:3<192::aid-mop16>3.0.co;2-d
Subject(s) - photorefractive effect , joint (building) , binary number , microwave , optics , computer science , architecture , nonlinear system , materials science , optoelectronics , electronic engineering , engineering , physics , telecommunications , architectural engineering , art , arithmetic , mathematics , quantum mechanics , visual arts
An efficient four‐wave mixing all‐optical fringe‐adjusted joint transform correlator (JTC) architecture employing a thin photorefractive crystal is proposed. This technique is suitable for both single‐ and multiple‐target detection. It is very fast since all processing is done in the optical domain in one step. The proposed technique also alleviates the effects of nonlinearity introduced by square‐law devices used in optoelectronic architectures. Computer simulation results are presented for both binary and gray‐level target detection using the proposed all‐optical fringe‐adjusted JTC architecture. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 26: 192–196, 2000.