Optical Sensing of Electric Fields in Harsh Environments

Seng, Frederick; Stan, Nikola; King, Rex; Josephson, Chad; Shumway, LeGrand; Hammond, Alec M.; Velasco, Ivann; Johnston, H. M.; Schultz, Stephen M.

doi:10.1109/jlt.2016.2631149

Cited by 8 publications

(2 citation statements)

References 17 publications

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“…Han et al (2014) developed a fiber EFS using the tapered fiber and LiNbO 3 crystal waveguide coupler. Seng et al (2017) presented an EFS based on a slab of LiNbO 3 and a D-shaped taper fiber. The electric field strength can be obtained by detecting the resonance wavelength shift generated by the interaction between the D-fiber and the slab waveguide.…”

Section: Introductionmentioning

confidence: 99%

Design of an electro-optical sensor with high sensitivity for AC electric field measurement

Peng

Bian

Jia

et al. 2022

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Purpose This study aims to address the issue of high-precision measurement of AC electric field. An electro-optical sensor with high sensitivity is proposed for this purpose. Design/methodology/approach The proposed sensor combines electromagnetic induction and fiber Bragg grating (FBG) sensing techniques. It is composed of a sensing probe, a piece or stack of piezoelectric ceramics (PZT) and an FBG. A signal processing circuit is designed to rectify and amplify the induced voltage. The processed signal is applied to the PZT and the deformation of PZT is detected by FBG. Theoretical calculation and simulation are conducted to verify the working principle of the probe. The sensor prototype is fabricated and its performance is tested. Findings The results of this study show that the sensor has good linearity and repeatability. The sensor sensitivity is 0.061 pm/Vm−1 in the range from 250 to 17,500 V/m, enabling a measurement resolution of electric field strength of 16.3 V/m. The PZT stack is used to enhance the sensor sensitivity and the resolution can be improved up to 3.15 V/m. Originality/value A flexure hinge lever mechanism is used to amplify the deformation of PZT for further enhancement of sensitivity. The results show that the proposed sensor has high sensitivity and can be used for the accurate measurement of an electric field. The proposed sensor could have potential use for electric field measurement in the power industry.

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Section: Introductionmentioning

confidence: 99%

Design of an electro-optical sensor with high sensitivity for AC electric field measurement

Peng

Bian

Jia

et al. 2022

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“…Compared with the traditional temperature sensor, optical fiber high-temperature sensor, combining with the characteristics of optical fiber sensing technology, has more obvious advantages, such as high precision, good linearity, a wide response range of temperature, corrosion resistance, safety and anti-interference (Mihailov, 2012, Huang et al , 2015, Xu et al , 2017, Seng et al , 2017). As a typical structure of optical fiber sensor, Fabry-Perot (F-P) optical fiber sensor also holds the above advantages and it is suitable to measure the temperature under the harsh condition of strenuous vibration, flammable and explosive, strong magnetic interference, high temperature and high pressure, and it can be widely used in the areas of aerospace, chemical, energy, metallurgy and building materials (Liu et al , 2017, Islam et al , 2014, Trontz et al , 2015, Tan et al , 2013, Rong et al , 2012).…”

Section: Introductionmentioning

confidence: 99%

Design and numerical analysis of high-reflective film used in F-P sapphire optical fiber high-temperature sensor

Lin

Zhao

et al. 2019

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Purpose The Fabry-Perot sapphire optical fiber sensor is an excellent choice for high-temperature sensing in civil and military fields, such as oil exploitation, engine and turbine. The purpose of this paper is to study the high-reflective film system withstanding high temperature in Fabry-Perot sapphire optical fiber high-temperature sensor. To improve the performance of the sensor and reduce the difficulty of signal acquisition, one of the key ways is to enhance the normalized light intensity of F-P sensor, which can be achieved by coating the high-reflective film system on the fiber end. Design/methodology/approach The high-reflective film system can be achieved by a multilayer film with alternating ZrO2 and Al2O3 film layers whose refractive indexes are different. In addition, the optimum film alternating sequences and the influence of the number of film layers, incident angle and temperature should be obtained by numerical analysis. Findings With the increase of the number of film layers, the reflectivity rises gradually and the change trend is more and more gentle. A minimum of the spectral reflectivity will occur at a certain incident angle depending on the design of the periodic multilayer system. Temperature affects the reflectivity of high-reflective film system. The normalized light intensity of the F-P sensor coated with high-reflective film system enhances greatly which is helpful to the signal demodulation. The temperature response of the F-P sensor is mainly determined by the characteristics of the F-P cavity. Originality/value Higher reflectivity, lower cost and easy signal acquisition are the most important features of the introduced high-reflective film system for the Fabry-Perot sapphire optical fiber high-temperature sensor.

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Electrically tunable optical fiber device based on hollow-core fiber infiltrated with liquid crystal

Liu

Cheng

Zhang

et al. 2021

Sensors and Actuators A: Physical

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Optical Sensing of Electric Fields in Harsh Environments

Cited by 8 publications

References 17 publications

Design of an electro-optical sensor with high sensitivity for AC electric field measurement

Design of an electro-optical sensor with high sensitivity for AC electric field measurement

Design and numerical analysis of high-reflective film used in F-P sapphire optical fiber high-temperature sensor

Electrically tunable optical fiber device based on hollow-core fiber infiltrated with liquid crystal

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