Optically controlled fiber voltage sensor

Филиппов, В. Н.; Starodumov, A.; Minkovich, Vladimir P.; Barmenkov, Yuri O.

doi:10.1109/68.853530

Cited by 13 publications

(7 citation statements)

References 6 publications

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“…Because it was based on frequency characteristics of interference signal, it was not so sensitive to the phase shift and polarization attenuation. In view of the adjustable sensitivity previously, in 2000, Filippov et al proposed a fiber-optic voltage sensor whose sensitivity can be controlled by light (Filippov et al, 2000). It can control sensitivity through applying an electro-optic crystal to adjust light intensity, but its sensitivity needs to be improved.…”

Section: Introductionmentioning

confidence: 99%

A voltage measurement system based on fiber loop cavity ring-down technology using polymer dispersed liquid crystal film as sensing device

Wang

Zhao

et al. 2017

Transactions of the Institute of Measurement and Control

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This paper proposed and experimentally demonstrated a high-resolution voltage measurement method based on fiber loop cavity ring-down (FLCRD) technology and polymer dispersed liquid crystal (PDLC) film as the sensing device. In this measurement system, PDLC is made into a film structure used as sensing device to measure external voltage changes, and the experiments were carried out to measure the relationships between light transmittivity of PDLC film and the external voltage. The FLCRD system with optimized structure parameters is obtained by numerical simulation, and the splitting ratios of fiber couplers used in the sensing system are optimized, and an erbium-doped fiber amplifier is used to compensate system signal loss, which has made a lot of improvement in the signal noise ratio and sensitivity. Finally, the experimental results show that the resolution of voltage measurement is 0.29 mV (0.0015%) in the range of 0-60V, which improved the resolution by 10 times compared with the current methods.

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Section: Introductionmentioning

confidence: 99%

A voltage measurement system based on fiber loop cavity ring-down technology using polymer dispersed liquid crystal film as sensing device

Wang

Zhao

et al. 2017

Transactions of the Institute of Measurement and Control

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“…Bi Ge O [1,2] and piezo-electric effect in quartz [3]. Furthermore, a fiber Bragg grating (FBG) mounted on a piezoelectric (PZT) transducer has been developed to measure voltage.…”

Section: Introductionmentioning

confidence: 99%

Optical Fiber Voltage Sensor Based on Michelson Interferometer Using Phase Generated Carrier Demodulation Algorithm

Chen¹,

He²,

Li³

et al. 2016

IEEE Sensors J.

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We present an optical fiber voltage sensor by Michelson interferometer employing a Fabry-Perot tunable optical filter and the phase generated carrier demodulation algorithm. By mounting a Michelson interferometer fabricated by an optical fiber coupler on a piezoelectric transducer, a dynamic strain would be generated to change the phase difference of the interferometer when the measured voltage is applied on the piezoelectric. The phase generated carrier demodulation method was used to obtain the phase variation of the interferometer by applying demodulate signal on a Fabry-Perot tunable optical filter. The measured voltage can be obtained by the variation of the phase; the random phase shift in the interferometer and the intensity fluctuation of the light source of the sensor can be eliminated. The experiment results show that the relation between the phase variation and the voltage applied on the piezoelectric is approximately linear. The dielectric reliability of the sensor has been verified according to the IEC standard.Index Terms-Optical fiber voltage sensor, Michelson interferometer, Fabry-Perot tunable optical filter, Phase generated carrier 1530-437X (c)

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“…Sagnac interferometer can be used to suppress reciprocal noise and drift signals in direct current sensor [7][8] . In order to compensate temperature drift of sensitivity, an optically controlled voltage sensor has been proposed whose sensitivity can be controlled by light intensity [9] . In a newly designed detachable bulk-optic current sensor, the sensitivity is dependent on the position of current-carrying conductor relative to current clamp [10] .…”

Section: Introductionmentioning

confidence: 99%

Single crystal-based optical current sensor with electrically adjustable sensitivity

2011

SPIE Proceedings

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An optical current sensor with adjustable sensitivity is proposed and investigated in experiment. A single bismuth germanate crystal is used as both current-sensing element and electro-optic modulator. When a rectangular pulse modulating voltage is applied to the crystal, the current-sensing signal can be obtained from the peak-to-peak intensity of output light. Both the measurement sensitivity and its temperature stability of the proposed sensor can be controlled by the modulating voltage, additionally its linear and monotone varying measurement range is larger than that of conventional optical current sensor. Direct current of ±(0.1~10)A was measured with electro-optically adjustable sensitivity, and maximum measurement uncertainty was less than 1.2%.

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Optically controlled fiber voltage sensor

Cited by 13 publications

References 6 publications

A voltage measurement system based on fiber loop cavity ring-down technology using polymer dispersed liquid crystal film as sensing device

A voltage measurement system based on fiber loop cavity ring-down technology using polymer dispersed liquid crystal film as sensing device

Optical Fiber Voltage Sensor Based on Michelson Interferometer Using Phase Generated Carrier Demodulation Algorithm

Single crystal-based optical current sensor with electrically adjustable sensitivity

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