Fiber Bragg Grating and Magnetic Shape Memory Alloy: Novel High-Sensitivity Magnetic Sensor

Ambrosino, C.; Capoluongo, P.; Campopiano, Stefania; Cutolo, A.; Giordano, M.; Davino, D.; Visone, C.; Cusano, A.

doi:10.1109/jsen.2006.886905

Cited by 16 publications

(11 citation statements)

References 7 publications

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“…Duenas and Carman [ 4 ] later demonstrated that Terfenol-D/epoxy composites can exhibit magnetostrictive strain responses comparable to that of the monolithic. Even though it has been previously demonstrated that bonding FBGs to monolithic Terfenol-D results in efficient sensors for different applications [ 5 – 10 ], there are very few published reports on the combined use of magnetostrictive composites and FBGs for sensing applications. In Reference [ 11 ], Liu et al .…”

Section: Introductionmentioning

confidence: 99%

A Magnetostrictive Composite-Fiber Bragg Grating Sensor

Quintero

Braga

Weber

et al. 2010

Sensors

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This paper presents a light and compact optical fiber Bragg Grating sensor for DC and AC magnetic field measurements. The fiber is coated by a thick layer of a magnetostrictive composite consisting of particles of Terfenol-D dispersed in a polymeric matrix. Among the different compositions for the coating that were tested, the best magnetostrictive response was obtained using an epoxy resin as binder and a 30% volume fraction of Terfenol-D particles with sizes ranging from 212 to 300 μm. The effect of a compressive preload in the sensor was also investigated. The achieved resolution was 0.4 mT without a preload or 0.3 mT with a compressive pre-stress of 8.6 MPa. The sensor was tested at magnetic fields of up to 750 mT under static conditions. Dynamic measurements were conducted with a magnetic unbalanced four-pole rotor.

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Section: Introductionmentioning

confidence: 99%

A Magnetostrictive Composite-Fiber Bragg Grating Sensor

Quintero

Braga

Weber

et al. 2010

Sensors

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“…: +20 1002952131, E-Mail: Taha25@gmail.com b OSA Member. humidity, 11 acceleration, 12 high magnetic field, 13 force, 14 medical, 7,15 acoustic, 16 and chemical 17 sensor elements. Quite several important characteristics make FBG sensors attractive for sensing applications.…”

Section: Introductionmentioning

confidence: 99%

Performance optimization of apodized FBG-based temperature sensors in single and quasi-distributed DWDM systems with new and different apodization profiles

2013

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In this work, different FBG temperature sensors are designed and evaluated with various apodization profiles. Evaluation is done under a wide range of controlling design parameters like sensor length and refractive index modulation amplitude, targeting a remarkable temperature sensing performance. New judgment techniques are introduced such as apodization window roll-off rate, asymptotic sidelobe (SL) decay level, number of SLs, and average SL level (SLav). Evaluation techniques like reflectivity, Full width at Half Maximum (FWHM), and Sidelobe Suppression Ratio (SLSR) are also used. A “New” apodization function is proposed, which achieves better performance like asymptotic decay of 18.4 dB/nm, high SLSR of 60 dB, high channel isolation of 57.9 dB, and narrow FWHM less than 0.15 nm. For a single accurate temperature sensor measurement in extensive noisy environment, optimum results are obtained by the Nuttall apodization profile and the new apodization function, which have remarkable SLSR. For a quasi-distributed FBG temperature sensor the Barthann and the new apodization profiles obtain optimum results. Barthann achieves a high asymptotic decay of 40 dB/nm, a narrow FWHM (less than 25 GHZ), a very low SLav of −45.3 dB, high isolation of 44.6 dB, and a high SLSR of 35 dB. The new apodization function achieves narrow FWHM of 0.177 nm, very low SL of −60.1, very low SLav of −63.6 dB, and very high SLSR of −57.7 dB. A study is performed on including an unapodized sensor among apodized sensors in a quasi-distributed sensing system. Finally, an isolation examination is performed on all the discussed apodizations and a linear relation between temperature and the Bragg wavelength shift is observed experimentally and matched with the simulated results.

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“…In any case, however, any hysteresis phenomena has been disregarded. Finally, in [18] the Terfenol-D active material was replaced by a Ni-Mn-Ga alloy, and the performances of a new magnetic field sensors were studied.…”

Section: Introductionmentioning

confidence: 99%