Optical correlator using very-large-scale integrated circuit/ferroelectric-liquid-crystal electrically addressed spatial light modulators.

The use of 2-kHz 64 × 64 very-large-scale integrated circuit/ferroelectric-liquid-crystal electrically addressed spatial light modulators as the input and filter planes of a VanderLugt-type optical correlator is discussed. Liquid-crystal layer thickness variations that are present in the devices are analyzed, and the effects on correlator performance are investigated through computer simulations. Experimental results from the very-large-scale-integrated/ferroelectric-liquid-crystal optical-correlator system are presented and are consistent with the level of performance predicted by the simulations.

[1]  D A Jared,et al.  Electrically addressed spatial light modulator that uses a dynamic memory. , 1991, Optics letters.

[2]  D J McKnight,et al.  Development of a spatial light modulator: a randomly addressed liquid-crystal-over-nMOS array. , 1989, Applied optics.

[3]  J L Horner,et al.  Is phase correction required in SLM-based optical correlators? , 1988, Applied optics.

[4]  H K Liu,et al.  Real-time computer-generated hologram by means of liquid-crystal television spatial light modulator. , 1986, Optics letters.

[5]  T. J. Drabik,et al.  Silicon VLSI/ferroelectric liquid crystal technology for micropower optoelectronic computing devices. , 1990, Applied optics.

[6]  T. J. Drabik,et al.  Ferroelectric-liquid-crystal/silicon-integrated-circuit spatial light modulator. , 1990, Optics letters.

[7]  D. Jared,et al.  Optically addressed thresholding very-large-scale-integration/liquid-crystal spatial light modulators. , 1991, Optics letters.

[8]  B. Kumar,et al.  Performance measures for correlation filters. , 1990, Applied optics.

[9]  Demetri Psaltis,et al.  Optical-Image Correlation With A Binary Spatial Light-Modulator , 1984 .

[10]  J L Horner,et al.  Signal-dependent phase distortion in optical correlators. , 1987, Applied optics.

[11]  Performance of a noisy phase-only matched filter in a broad spectral band optical correlator. , 1986, Applied optics.

[12]  J L Horner,et al.  Pattern recognition with binary phase-only filters. , 1985, Applied optics.

[13]  F M Dickey,et al.  Bandwidth considerations for binary phase-only filters. , 1988, Applied optics.

[14]  D Casasent,et al.  Phase correction of light modulators. , 1986, Optics letters.

[15]  H M Kim,et al.  Phase correction of a spatial light modulator displaying a binary phase-only filter. , 1988, Applied optics.

[16]  A. B. Vander Lugt,et al.  Signal detection by complex spatial filtering , 1964, IEEE Trans. Inf. Theory.

[17]  J. Horner,et al.  Phase-only matched filtering. , 1984, Applied optics.

[18]  J D Downie,et al.  Effects and correction of magneto-optic spatial light modulator phase errors in an optical correlator. , 1992, Applied optics.

[19]  Noel A. Clark,et al.  Surface-stabilized ferroelectric liquid crystal electro-optics: New multistate structures and devices , 1984 .