Voltage sensor with a wide frequency range using a deformed helix ferroelectric liquid crystal

Abstract

In this paper we propose a new approach to fiber optic voltage sensors via voltage-controlled Liquid Crystals (LCs), which would allow direct measurement of up to 400 kV/m electric fields at multiple points. In addition, the electro-optical behavior of deformed helix ferroelectric (DHF) liquid crystal in reflective mode is described and tested. The electrically controlled reflectance has been measured at sub-kilohertz driving voltage frequency for different polarizations of the incident light. © 2013 Photonics Society of Poland.