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Proceedings Paper

Electro-optic and opto-optic effects in liquid crystal waveguides
Author(s): Giusy Scalia; David S. Hermann; F. De Marco; Pasquale Mormile; Giancarlo Abbate
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Paper Abstract

A guided light wave can be modulated by coupling it into a ferroelectric liquid crystal (FLC) waveguide. The FLC, which changes its optical properties under the application of an electric field, acts as active medium. With a carefully chosen aligned configuration, the large change in refractive index induced by the electric field, gives a good contrast ratio in the optical response. The optical and electro- optical properties of liquid crystals can be modified by the propagating light and these effects can be enhanced by the addition of a suitable absorbing dye in the liquid crystal. Thus changes in the guiding conditions of the light can be induced also by the guided light itself.

Paper Details

Date Published: 14 October 1999
PDF: 9 pages
Proc. SPIE 3800, Liquid Crystals III, (14 October 1999); doi: 10.1117/12.365795
Show Author Affiliations
Giusy Scalia, Chalmers Univ. of Technology (Sweden)
David S. Hermann, Univ. degli Studi di Napoli Federico II (Italy)
F. De Marco, Univ. degli Studi di Napoli Federico II (Italy)
Pasquale Mormile, Istituto di Cibernetica (Italy)
Giancarlo Abbate, Univ. degli Studi di Napoli Federico II (Italy)

Published in SPIE Proceedings Vol. 3800:
Liquid Crystals III
Iam-Choon Khoo, Editor(s)

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