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In this paper we demonstrate nonlinear optical properties of a channel waveguide made of E7 nematic liquid crystal infiltrated in a SiO2/Si V-groove. Light in C-Band (1530-1565 nm), fiber coupled to the core of the liquid crystal waveguide, was optically modulated by the optical beam itself, with a power below 25 mW. A bias voltage was applied to induce a liquid crystal orientation over the Freedericksz threshold and a further director reorientation was obtained by increasing the optical beam. The effect of optical modulation for different applied voltages obtained experimentally was modelled including both opto and electro-optical effects.
Taylor & Francis Group
Publication date: 
28 Oct 2011

Marco Trotta, Rita Asquini, Antonio d’Alessandro, Romeo Beccherelli

Biblio References: 
Volume: 549 Issue: 1 Pages: 100-105
Molecular Crystals and Liquid Crystals