Miniaturized total-reflection ferroelectric liquid-crystal electro-optic switch

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Abstract
A total internal reflection (TIR) ferroelectric liquid-crystal optical switch has been described using a larger value of birefringence and higher extraordinary refractive index (ne) of FLC than the refractive index (ng) of glass. The off-axis orientations of voltage selected optic axes directions provide a convenient matching of transmission and reflection characteristics. This enables one to decrease the critical angle for TIR. The electro-optic switch can be miniaturized and a large switch array (1×4; 4×4) architecture is feasible.