SPATIAL MODULATION OF MATRIX NEMATIC LCDS A FIBEROPTIC COMPONENTS

The effectiveness of matrix-type spatial-temporal LC modulators used i n information-array formation circuits depends not only on the electro optic parameters of the modulating layer but also on the modulator des ign. New possibilities for using multichannel modulation of radiation in optical circuits intended for formation and retrieval of informatio n arrays are opened up by the development of matrix liquid crystal dis plays (LCD) based on fiber-optic components. The work is concerned wit h the results of development and investigation of liquid-crystal matri x modulators on fibre-optic faceplates. The light transmission of the substrates employed was 0.75-0.80 in the visible spectral range, and t he resolution was not worse than 60mm(-1). The modulator samples utili zed the twist-effect and the effect of dynamic light scattering in nem atic liquid crystals, the LC layer width was 10 mu m. The modulation c haracteristics were investigated on samples featuring different sizes and shapes of electrodes. It is demonstrated that the contrast provide d by the spatial-temporal modulators on fibre-optic faceplate is enhan ced owing to a reduced noise level in the output faceplate plane.