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Proceedings Paper

Fiber optic dynamic electric field sensor based on nematic liquid crystal Fabry-Perot etalon
Author(s): Myeong Ock Ko; Sung-Jo Kim; Jong-Hyun Kim; Min Yong Jeon
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Paper Abstract

We propose a fiber-optic dynamic electric field sensor using a nematic liquid crystal (NLC) Fabry-Perot etalon and a wavelength-swept laser. The transmission wavelength of the NLC Fabry-Perot etalon depends on the applied electric field intensity. The change in the effective refractive index of the NLC is measured while changing the applied electric field intensity. It decreases from 1.67 to 1.51 as the applied the electric field intensity is increased. Additionally, we successfully measure the dynamic variation of the electric field using the high-speed wavelength-swept laser. By measuring the modulation frequency of the transmission peaks in the temporal domain, the frequency of the modulated electric field can be estimated.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91570W (2 June 2014); doi: 10.1117/12.2059037
Show Author Affiliations
Myeong Ock Ko, Chungnam National Univ. (Korea, Republic of)
Sung-Jo Kim, Chungnam National Univ. (Korea, Republic of)
Jong-Hyun Kim, Chungnam National Univ. (Korea, Republic of)
Min Yong Jeon, Chungnam National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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