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 applied bias, no guiding--hence no modal output--is provided by the structure.
Asquini
Rita
R
Department of Electronic Engineering and Istituto Nazionale per la Fisica della Materia, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy. rita.asquini@uniroma1.it
Fratalocchi
Andrea
A
d'Alessandro
Antonio
A
Assanto
Gaetano
G