Electro-optic routing in a nematic liquid-crystal waveguide

We propose a versatile guided-wave geometry encompassing electro-optic control for signal routing. A zero-gap directional coupler in liquid crystal can switch between two output states in the guide plane, permitting signal rerouting with modulation voltages as small as 70 mV. In the absence of an ap...

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Bibliographic Details
Published in:Applied optics (2004) 2005-07, Vol.44 (19), p.4136-4143
Main Authors: Asquini, Rita, Fratalocchi, Andrea, d'Alessandro, Antonio, Assanto, Gaetano
Format: Article
Language:English
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Summary:We propose a versatile guided-wave geometry encompassing electro-optic control for signal routing. A zero-gap directional coupler in liquid crystal can switch between two output states in the guide plane, permitting signal rerouting with modulation voltages as small as 70 mV. In the absence of an applied bias, no guiding--hence no modal output--is provided by the structure.
ISSN:1559-128X
DOI:10.1364/AO.44.004136