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Sensors 2015, 15(4), 7125-7135; doi:10.3390/s150407125

Thermodynamic Modeling and Analysis of an Optical Electric-Field Sensor

State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China
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Academic Editor: Lorenzo Pavesi
Received: 4 December 2014 / Accepted: 18 March 2015 / Published: 24 March 2015
(This article belongs to the Special Issue Silicon Based Optical Sensors)
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Abstract

The stability of the optical electric field sensor (OEFS) in actual operation is affected by environmental factors such as temperature and SF6 (sulfur hexafluoride). To analyze the operational environment parameters affecting the optical properties of crystals, a thermodynamic model of the OEFS in which the optical properties of the crystal are changed by the first-order effects and the second-order effects was established. The intensity parameters such as electric, stress and temperature fields were introduced. The theoretical analysis results show that under temperature, stress and electric field conditions, the optical properties of the sensing crystals are no longer changed only by the electro-optic effect, but also by the temperature and the stress fields. Further synthesis suggests the expected optical property changes under the effect of the environment fields. OEFS tests show that the accuracy of OEFS is dependent on temperature with a ratio error of −0.8%~1.5% in the temperature range from −25 °C to +40 °C. View Full-Text
Keywords: optical electric-field sensor; thermodynamic model; sensor crystal; optical properties; stability optical electric-field sensor; thermodynamic model; sensor crystal; optical properties; stability
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Xiao, X.; Xu, Y.; Dong, Z. Thermodynamic Modeling and Analysis of an Optical Electric-Field Sensor. Sensors 2015, 15, 7125-7135.

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