We present a novel electric-field and voltage sensor based on the electro-optical properties of polymer-dispersed liquid-crystals (PDLCs). In principle, the transmittance of PDLCs is a nonlinear function of the applied electrical field. To measure an AC field we superposed to it a known DC field. This allowed us to achieve linearization of the PDLC response and to measure transmittance changes independently of the light-intensity level variations. Validation experiments are presented.
© 2006 Optical Society of America
Original Manuscript: September 7, 2005
Revised Manuscript: December 1, 2005
Manuscript Accepted: December 9, 2005
Elizabeth Scherschener, César D. Perciante, Enrique A. Dalchiele, Erna M. Frins, Matthias Korn, and José A. Ferrari, "Polymer-dispersed liquid-crystal voltage sensor," Appl. Opt. 45, 3482-3488 (2006)