A highly sensitive force sensor based on two identical fiber Bragg gratings

Tang, Guoyu; Wei, Jingyan; Zhou, Wei; Yang, Meichao; Wu, Ming‐Xue; Xu, Xiaofeng

doi:10.1088/0957-0233/26/11/115203

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…1(b) which is an alternative to other fibre optic force sensors reported until now, see for example [7,[18][19][20][21][22][23]. The modes that participate in the interference are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Supersensitive sensors based on multicore optical fibres

et al. 2016

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In this work, we demonstrate the use of particularly characterised multicore optical fibres (MCFs) to devise compact, compellingly simple, ultrasensitive interferometric sensors which are capable of sensing single or multiple physical parameters. Generally, our devices operate in reflection mode and consist of a few centimetres of MCF fusion spliced to standard single-mode optical fibre (SMF). The tools and instrumentation needed to fabricate our devices are a conventional fibre cleaver and a fusion splicing machine. We demonstrate a highly-sensitive bending sensor (inclinometer) with a MCF with three strongly coupled cores which is capable of distinguishing multiple bending or inclination orientations, and also a force sensor based on MCF with seven coupled cores. In both cases the devices are interrogated with a low-power LED and a miniature spectrum analyser. Bending or force on the MCF induces drastic changes of the supermodes, their excitation, and consequently, on the reflected spectrum (interference pattern).

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Section: Resultsmentioning

confidence: 99%

Supersensitive sensors based on multicore optical fibres

et al. 2016

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“…Mo et al reported a miniature and magnetic-resonance-compatible optical Fabry-Perot (F-P) force sensor [ 8 ], achieving a force sensing range of 0–5 N with a resolution of 0.1 N. Noh et al developed a three-axis fiber-optic body force sensor structure for flexible manipulators with a measurement range of 0–21 N, being suitable for inclusion in instruments and robotic tools for minimally invasive surgery [ 9 ]. Tang et al reported a sensitive force sensor using two identical fiber Bragg gratings (FBGs), achieving a sensitivity of (1.16 ± 0.06) × 10 3 dB/N [ 10 ]. Zychowicz presented a fiber-optic force sensor, operating in the configuration of a birefringent fiber based on a Sagnac interferometer, with a measurement range of 0–2 N [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Fiber Fabry-Perot Force Sensor with Small Volume and High Performance for Assessing Fretting Damage of Steam Generator Tubes

Huang¹,

Wang²,

Li³

et al. 2017

Sensors

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Measuring the radial collision force between the steam generator tube (SGT) and the tube support plate (TSP) is essential to assess the fretting damage of the SGT. In order to measure the radial collision force, a novel miniaturized force sensor based on fiber Fabry-Perot (F-P) was designed, and the principle and characteristics of the sensor were analyzed in detail. Then, the F-P force sensor was successfully fabricated and calibrated, and the overall dimensions of the encapsulated fiber F-P sensor were 17 mm × 5 mm × 3 mm (L × W × H). The sensor works well in humid, high pressure (10 MPa), high temperature (350 °C), and vibration (40 kHz) environments. Finally, the F-P force sensors were installed in a 1:1 steam generator test loop, and the radial collision force signals between the SGT and the TSP were obtained. The experiments indicated that the F-P sensor with small volume and high performance could help in assessing the fretting damage of the steam generator tubes.

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“…The strategies of controlling the membrane morphology and structure by introducing additives were reported in detail by many researches through the thermodynamic phase diagram or kinetic light transmission of phase separation [1][2][3]. Among which, polyethylene glycol (PEG) and LiCl are the common additives used as organic compound and inorganic salt respectively for membrane preparation.…”

Section: Introductionmentioning

confidence: 99%

Synergy Effect of PEG and LiCl as Additives on PVDF UF Membrane Performance

Zhang

2014

AMR

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PVDF flat UF membranes were optimized to get relative high protein rejection with high permeation fluxes. The effects of PVDF content and the additive species on the membrane performance were investigated. The synergy effect between LiCl and PEG8kcan increase the flux remarkably than the single additive. With the increase of PEG8kcontent, the synergy effect of LiCl decreased. In addition, when the PEG8kcontent was higher than LiCl, the pure water flux was relatively high, while with the increasing of LiCl content, the membrane tensile strength was increased. The addition of PEG8kand LiCl should constitute an appropriate method to prepare a series of membranes with controlled flux.

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A highly sensitive force sensor based on two identical fiber Bragg gratings

Cited by 5 publications

References 26 publications

Supersensitive sensors based on multicore optical fibres

Supersensitive sensors based on multicore optical fibres

Fiber Fabry-Perot Force Sensor with Small Volume and High Performance for Assessing Fretting Damage of Steam Generator Tubes

Synergy Effect of PEG and LiCl as Additives on PVDF UF Membrane Performance

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