INVESTIGADORES
IEMMI Claudio Cesar
artículos
Título:
Phase only photorefractive joint transform correlator
Autor/es:
C.IEMMI; C.LA MELA
Revista:
OPTICS COMMUNICATIONS
Editorial:
Elsevier
Referencias:
Año: 2002 vol. 209 p. 255 - 263
ISSN:
0030-4018
Resumen:
In this work we propose a method to improve the discrimination capability of joint transform correlators. The
technique is mainly developed to apply in photorefractive joint transform correlators that use a liquid crystal spatial
light modulator to display the input plane and a BSO crystal to record dynamically the joint transform plane. The
discrimination capability of the system is increased by using a phase-encoded input in combination with the phase-only
information of the reference. To this end we use the liquid crystal modulator working in a pure phase mode. We
perform numerical simulations to show that the proposed method also improves the discrimination capability of
correlators with conventional linear detection of the joint power spectrum. Experimental results obtained with our
photorefractive correlator are shown.