Title :
Ultrafast all-optical joint transform correlation
Author :
Alam, Mohammad S.
Author_Institution :
Dept. of Electr. Eng., Purdue Univ., Fort Wayne, IN, USA
Abstract :
A new all-optical architecture for fringe-adjusted joint transform correlation using a photorefractive crystal is proposed. The proposed is very fast because it generates the correlation output in one step while eliminating the intermediate Fourier plane processing required by alternate techniques. This also avoids the problems introduced by the nonlinearities associated with the CCD array used for recording the joint power spectrum
Keywords :
Fourier transforms; digital simulation; optical correlation; photorefractive effect; physics computing; simulation; CCD array; fringe-adjusted joint transform correlation; intermediate Fourier plane processing; joint power spectrum; nonlinearities; optical joint transform correlation; photorefractive crystal; real time; Correlators; Fourier transforms; Layout; Matched filters; Object detection; Optical filters; Optical recording; Optical saturation; Optical sensors; Ultrafast optics;
Conference_Titel :
Aerospace and Electronics Conference, 1997. NAECON 1997., Proceedings of the IEEE 1997 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-3725-5
DOI :
10.1109/NAECON.1997.618125
