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Testing of a Polarimetric Current Sensor in the Frequency Domain
Sławomir Andrzej Torbus1, Jacek Andrzej Michalski2
1Institute of Mathematics, Kazimierz Wielki University in Bydgoszcz, Powstańców Wielkopolskich 2, 85-090 Bydgoszcz, Poland.
Sensors (Basel, Switzerland)
|April 30, 2021
Summary
This study confirms single-mode telecommunication optical fibers can build polarimetric current sensors for alternating current (AC) measurement. These sensors do not introduce additional waveform distortions, validating their use in AC current sensing applications.
Area of Science:
- Electrical Engineering
- Optical Physics
- Materials Science
Background:
- Polarimetric current sensors offer a non-invasive method for electrical measurements.
- Telecommunication optical fibers are increasingly explored for sensing applications due to their robust properties.
- Previous research indicated potential for optical fibers in current sensing, but waveform distortion analysis was limited.
Purpose of the Study:
- To characterize a polarimetric current sensor utilizing single-mode telecommunication optical fibers for its measuring coil.
- To analyze the impact of signal processing, including Discrete Fourier Transform (DFT), on measurement accuracy.
- To investigate the influence of fiber properties (dopant concentration) and coil design (number of turns) on signal distortion and total harmonic distortion (THD).
Main Methods:
- Development and testing of a polarimetric current sensor with a measuring coil made from ITU-T G.652, G.653, G.655, and G.657 optical fibers.
- Application of Discrete Fourier Transform (DFT) to analyze signal harmonics at the sensor's input and output.
- Calculation of measurement errors and Total Harmonic Distortion (THD).
- Experimental determination of the effects of Germanium dioxide (GeO2) molar concentration and coil turns on signal processing distortions.
Main Results:
- Single-mode telecommunication optical fibers are suitable for constructing the measuring coil of a polarimetric sensor for alternating current (AC) measurements.
- The developed sensor demonstrated minimal introduction of additional distortions or waveform alterations during AC current measurement.
- Analysis confirmed the feasibility of using DFT for harmonic analysis in polarimetric current sensing.
- The study quantified the impact of GeO2 concentration and coil turns on measurement distortions.
Conclusions:
- The polarimetric current sensor utilizing single-mode telecommunication optical fibers is a viable technology for accurate AC current measurement.
- The sensor design effectively preserves the integrity of the measured AC current waveform.
- Further research directions include detailed frequency analysis to optimize sensor performance and minimize residual distortions.
Keywords:
Discrete Fourier Transformfrequency analysismeasurement errorpolarimetric current sensorsingle mode optical fibertotal harmonic distortionMore Related Videos
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