Diluted Magnetic Semiconductor Probe for Magnetic Field Sensing Using Improved Common-Mode Noise Reduction Scheme

Radu G. CUCU; Adrian Gh. PODOLEANU; David A. JACKSON

Diluted Magnetic Semiconductor Probe for Magnetic Field Sensing Using Improved Common-Mode Noise Reduction Scheme

Radu G. CUCU, Adrian Gh. PODOLEANU, David A. JACKSON

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An optical magnetic field measuring system using diluted magnetic semiconductors (DMS) probes is presented. The attractive features of DMS for building current/ magnetic field sensors are outlined. The system configuration includes a common-mode noise rejection scheme (CMR) to eliminate optic intensity noise induced in the fibre links by environmental vibrations. The CMR scheme relies on a pulse delay method based on the creation of two relatively delayed replicas of the photodetector output signal and their subsequent subtraction (division). Theoretical and experimental analyses of the system operation are developed and noise rejection methods using subtraction and division are presented and compared. Although CMR by division seems to be more appealing from the theoretical viewpoint (due to the rejection of intensity noise caused both by environmental vibrations and laser source output power fluctuations), in practical terms the subtraction is more reliable and easier to implement. The noise rejection figure measured experimentally is about 17 dBV for CMR both by subtraction and by division. A system calibration curve is presented. The minimum magnetic flux density detected with the system is 0.06 mT rms.

Publication: IEICE TRANSACTIONS on Electronics Vol.E83-C No.3 pp.336-341

Publication Date: 2000/03/25

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Type of Manuscript: Special Section PAPER (Special Issue on Optical Fiber Sensors)

Category: Sensors for Electromagnetic Phenomena

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Radu G. CUCU, Adrian Gh. PODOLEANU, David A. JACKSON, "Diluted Magnetic Semiconductor Probe for Magnetic Field Sensing Using Improved Common-Mode Noise Reduction Scheme" in IEICE TRANSACTIONS on Electronics, vol. E83-C, no. 3, pp. 336-341, March 2000, doi: .
Abstract: An optical magnetic field measuring system using diluted magnetic semiconductors (DMS) probes is presented. The attractive features of DMS for building current/ magnetic field sensors are outlined. The system configuration includes a common-mode noise rejection scheme (CMR) to eliminate optic intensity noise induced in the fibre links by environmental vibrations. The CMR scheme relies on a pulse delay method based on the creation of two relatively delayed replicas of the photodetector output signal and their subsequent subtraction (division). Theoretical and experimental analyses of the system operation are developed and noise rejection methods using subtraction and division are presented and compared. Although CMR by division seems to be more appealing from the theoretical viewpoint (due to the rejection of intensity noise caused both by environmental vibrations and laser source output power fluctuations), in practical terms the subtraction is more reliable and easier to implement. The noise rejection figure measured experimentally is about 17 dBV for CMR both by subtraction and by division. A system calibration curve is presented. The minimum magnetic flux density detected with the system is 0.06 mT rms.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e83-c_3_336/_p

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@ARTICLE{e83-c_3_336,
author={Radu G. CUCU, Adrian Gh. PODOLEANU, David A. JACKSON, },
journal={IEICE TRANSACTIONS on Electronics},
title={Diluted Magnetic Semiconductor Probe for Magnetic Field Sensing Using Improved Common-Mode Noise Reduction Scheme},
year={2000},
volume={E83-C},
number={3},
pages={336-341},
abstract={An optical magnetic field measuring system using diluted magnetic semiconductors (DMS) probes is presented. The attractive features of DMS for building current/ magnetic field sensors are outlined. The system configuration includes a common-mode noise rejection scheme (CMR) to eliminate optic intensity noise induced in the fibre links by environmental vibrations. The CMR scheme relies on a pulse delay method based on the creation of two relatively delayed replicas of the photodetector output signal and their subsequent subtraction (division). Theoretical and experimental analyses of the system operation are developed and noise rejection methods using subtraction and division are presented and compared. Although CMR by division seems to be more appealing from the theoretical viewpoint (due to the rejection of intensity noise caused both by environmental vibrations and laser source output power fluctuations), in practical terms the subtraction is more reliable and easier to implement. The noise rejection figure measured experimentally is about 17 dBV for CMR both by subtraction and by division. A system calibration curve is presented. The minimum magnetic flux density detected with the system is 0.06 mT rms.},
keywords={},
doi={},
ISSN={},
month={March},}

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TY - JOUR
TI - Diluted Magnetic Semiconductor Probe for Magnetic Field Sensing Using Improved Common-Mode Noise Reduction Scheme
T2 - IEICE TRANSACTIONS on Electronics
SP - 336
EP - 341
AU - Radu G. CUCU
AU - Adrian Gh. PODOLEANU
AU - David A. JACKSON
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E83-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 2000
AB - An optical magnetic field measuring system using diluted magnetic semiconductors (DMS) probes is presented. The attractive features of DMS for building current/ magnetic field sensors are outlined. The system configuration includes a common-mode noise rejection scheme (CMR) to eliminate optic intensity noise induced in the fibre links by environmental vibrations. The CMR scheme relies on a pulse delay method based on the creation of two relatively delayed replicas of the photodetector output signal and their subsequent subtraction (division). Theoretical and experimental analyses of the system operation are developed and noise rejection methods using subtraction and division are presented and compared. Although CMR by division seems to be more appealing from the theoretical viewpoint (due to the rejection of intensity noise caused both by environmental vibrations and laser source output power fluctuations), in practical terms the subtraction is more reliable and easier to implement. The noise rejection figure measured experimentally is about 17 dBV for CMR both by subtraction and by division. A system calibration curve is presented. The minimum magnetic flux density detected with the system is 0.06 mT rms.
ER -