Guo, Q.; Brodzeli, Z.; Silvestri, L.; Srivastava, A.; Pozhidaev, E. P.; Chigrinov, V. G.; Kwok, H. S. Voltage Sensor With Wide Frequency Range Using Deformed Helix Ferroelectric Liquid Crystal. Photonics Lett. Pol. 2013, 5, pp. 2-4.