Temperature compensation for a fiber‐Bragg‐grating‐based magnetostrictive sensor

Yi, Bokai; Chu, Beatrice C.B.; Chiang, Kin Seng

doi:10.1002/mop.10722

Cited by 15 publications

(8 citation statements)

References 10 publications

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“…The spectral sensitivity in this range was independent of temperature, having a value of (2.31 ± 0.05) × 10 ). In order to compensate the temperature effects in the FBG based on magnetostrictive materials, two simple techniques were demonstrated by Yi et al [65]. The first technique consisted of two FBGs placed perpendicular to each other and bounded onto a single Terfenol-D layer material.…”

Section: Terfenol-dmentioning

confidence: 99%

Optical Current Sensors for High Power Systems: A Review

et al. 2012

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Abstract:The intrinsic advantages of optical sensor technology are very appealing for high voltage applications and can become a valuable asset in a new generation of smart grids. In this paper the authors present a review of optical sensors technologies for electrical current metering in high voltage applications. A brief historical overview is given together with a more detailed focus on recent developments. Technologies addressed include all fiber sensors, bulk magneto-optical sensors, piezoelectric transducers, magnetic force sensors and hybrid sensors. The physical principles and main advantages and disadvantages are discussed. Configurations and strategies to overcome common problems, such as interference from external currents and magnetic fields induced linear birefringence and others are discussed. The state-of-the-art is presented including commercial available systems.

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Section: Terfenol-dmentioning

confidence: 99%

Optical Current Sensors for High Power Systems: A Review

et al. 2012

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“…Two separate FBGs with the same central wavelength, one for strain measurement and the other for temperature reference (Dong, 2008;Dong et al, 2004;Heo et al, 2006;Chiang et al, 2001;Xu et al, 1994a, b, c;Song et al, 1997;Yi et al, 2003) The most simple and straightforward technique for temperature compensation. However, it is difficult to assure that the two FBGs possess the same central wavelength Two FBGs with entirely different central wavelengths, temperature sensitivities and strain sensing sensitivities (Liu et al, 2007;Xu et al, 1994a, b, c) Simultaneously measurement of temperature and strain, but this technique requires two light sources and two interrogation units, thereby increasing the overall cost of the system Single FBG attached onto or embedded into a negative coefficient of thermal expansion (CET) material to compensate temperature shift (Nakamura et al, 2005;Du et al, 2008;Li et al, 2008;Hayano and Mita, 2005;Lo and Kuo, 2003;Huang et al, 2003;Tian et al, 2005) Strain measure can be realized using only one FBG.…”

Section: Schemes Of Temperature Compensation Remarksmentioning

confidence: 99%

A comparison study of the sensing characteristics of FBG and TFBG

Jiang

2013

Sensor Review

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Purpose -The purpose of this paper is to compare the sensing characteristics of uniform fiber Bragg grating (FBG) and tilted fiber Bragg grating (TFBG) by presenting a detailed research review. Temperature, axial strain, bending, vibration and refractive index measurands of FBG and TFBG sensor are presented and some significant differences are found. Design/methodology/approach -Theoretical analysis and practical application in engineering are investigated and compared from other authors' research papers and self analysis. Spectra behavior of both FBG and TFBG are discussed. Findings -There are found to be significant differences in temperature, axial strain, bending, vibration and refractive index sensing characteristics of FBG and TFBG. Originality/value -The paper's analysis is comprehensive and clear and provides readers with the sensing characteristics of FBG and TFBG in detail.

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“…Current can be measured by detecting magnetic field around the current cable. At present most researches are based on bulk magnetostrictive materials [36][37][38] and magneto-optical crystal [39][40][41], and there are rarely investigations using FBG dipped in the magnetic fluid as sensing element. It was reported that long-period fiber grating (LPFG) had a high wavelength shift [42] when immersed in the magnetic fluid.…”

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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Temperature compensation for a fiber‐Bragg‐grating‐based magnetostrictive sensor

Cited by 15 publications

References 10 publications

Optical Current Sensors for High Power Systems: A Review

Optical Current Sensors for High Power Systems: A Review

A comparison study of the sensing characteristics of FBG and TFBG

Review on optical fiber sensors with sensitive thin films

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