Voltage Sensor with wide Frequency Range using Deformed Helix Ferroelectric Liquid Crystal

Qi Guo, Z. Brodzeli, L. Silvestri, A.K. Srivastava, E. P. Pozhidaev, V. G. Chigrinov, H. S. Kwok

Abstract


In this paper we propose a new approach to fiber optic voltage sensors via voltage-controlled Liquid Crystals (LC), 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.

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Photonics Letters of Poland - A Publication of the Photonics Society of Poland
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