Performance comparison of ferroelectric liquid-crystal-technology-based coherent optical multichannel correlators
Résumé
Our purpose is to compare two architectures when implemented with ferroelectric liquid-crystal technology: the conventional VanderLugt and joint transform correlators. The architectures are compared in the single-correlation and multichannel cases. The analysis covers both theoretical aspects and practical considerations regarding implementation. Specifications for a multichannel correlator design, including considerations of both spatial light modulators and architecture configurations, are discussed. Experimental results are presented for both architectures. Finally, the benefit resulting from extension to multichannel operation is discussed in terms of both multiplexing and algorithmic capabilities
Mots clés
Signal Processing
Image Processing
Opto-electronic
Encoding/Decoding
Compression
Decompression
encryption
Independent Components Analyses (ICA)
Optical correlation
recognition forms
Information Processing
Diffractive optics
Digital Holography
Fourier transform
polarized light
Composite filter
POF
VLC
JTC