Stable dynamic detection scheme for magnetostrictive fiber-optic interferometric sensors

Shi, Changhai; Chen, Jianping; Wu, Guiling; Li, Xinwan; Zhou, Jian; Ou, Fang

doi:10.1364/oe.14.005098

Cited by 28 publications

(9 citation statements)

References 7 publications

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“…They show no interference with electromagnetic radiation, so they can function in many hostile environments where conventional sensors would fail [32,33]. TbDyFe is one of the most promising magnetostrictive materials, especially TbDyFe has giant magnetostrictive coefficient [34,35]. It will expand when being put in magnetic field, which has a linear and reverse response to the strength of the magnetic field.…”

Section: Optical Fiber Magnetic Filed Sensor Developmentmentioning

confidence: 99%

Review on optical fiber sensors with sensitive thin films

Yang

Dai

2011

Photonic Sens

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Abstract:The combination of fiber optics with nano-structure technologies and sensitive thin films offers great potential for the realization of novel sensor concepts. Miniatured optical fiber sensors with thin films as sensitive elements could open new fields for optical fiber sensor applications. Thin films work as sensitive elements and transducer to get response and feedback from environments, in which optical fibers are employed to work as signal carrier. This article presents some research work conducted at the National Engineering Laboratory for Optical Fiber Sensing Technologies in recent years. Concrete examples are: Pd/WO 3 co-sputtered coating as sensing material for optical hydrogen sensors shows robust mechanical stability and meanwhile good sensing performance; TbDyFe magnetostrictive coating directly deposited on fiber Bragg grating (FBG) demonstrates its possibility of miniature optical magnetic field/current sensors, and 40-pm shift of the FBG wavelength happens at a magnetic field order of 50 mT.

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Section: Optical Fiber Magnetic Filed Sensor Developmentmentioning

confidence: 99%

Review on optical fiber sensors with sensitive thin films

Yang

Dai

2011

Photonic Sens

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“…Magnetic field induced from other phases in this sensor. AC current measurement with FBG has been extensively discussed earlier [7][8][9][10]. The sensor uses the principal of magnetic induction of a straight infinite conductor.…”

Section: Development Of Conceptmentioning

confidence: 99%

Novel Fiber Bragg Grating sensor applicable for fault detection in high voltage transformers

Moghadas

Shadaram

2010

2010 IEEE Conference on Innovative Technologies for an Efficient and Reliable Electricity Supply

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In this paper, a fiber optic based sensor capable of fault detection in the high voltage transformers is investigated. Bragg wavelength shift is used to detect fault in power systems. Magnetic fields generated by fault currents in the transformer cause a strain in magnetostrictive material which is then detected by Fiber Bragg Grating (FBG). Fiber Bragg interrogator senses the reflected FBG signals, and the Bragg wavelength shift is calculated and signals are processed. It is shown that the faults in both primary and secondary of transformers cause a detectable wavelength shift in the Fiber Bragg Grating.

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“…However, the magnetostrictive material in multilayer structure and cylindrical configuration is generally adopted in a real magnetostrictive fiber-optic interferometric magnetic field transducer [19], [26]. Thus, it is not easy to evolve an exact and simple expression as the one shown in (3) for a real transducer, especially to include the thermal expansion coefficients of all the parameters along with the size and shape of the transducer.…”

Section: Principle and Theoretic Analysismentioning

confidence: 99%

Experimental Investigation on Temperature Dependence of the Performance in a Magnetostrictive Fiber-Optic Interferometric Magnetic Field Sensor

Wang

et al. 2009

IEEE Sensors J.

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This paper studies the temperature dependence of the performance in magnetostrictive fiber-optic Michelson interferometric magnetic field sensors. Experiments are carried out and the results show that the sensor system output, system sensitivity and transducer's mechanical resonant frequency are strongly affected by the ambient temperature. Fitted expressions are provided and compensation methods are demonstrated with experimental verification.Index Terms-Fiber-optic interferometric magnetic field transducer, mechanical resonant frequency, system output, temperature behavior.

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Stable dynamic detection scheme for magnetostrictive fiber-optic interferometric sensors

Cited by 28 publications

References 7 publications

Review on optical fiber sensors with sensitive thin films

Review on optical fiber sensors with sensitive thin films

Novel Fiber Bragg Grating sensor applicable for fault detection in high voltage transformers

Experimental Investigation on Temperature Dependence of the Performance in a Magnetostrictive Fiber-Optic Interferometric Magnetic Field Sensor

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