Pressure-independent Brillouin Fiber Optic Sensors for temperature measurements

Sonneville, Camille; Degioanni, S.; Martinet, C.; Ligny, Dominique de; Martinez, V.; Jurdyc, Anne-Marie; Braunn, A.; Raffaëlly, L.; Champagnon, B.; Vouagner, D.

doi:10.1016/j.jnoncrysol.2014.01.029

Cited by 5 publications

(7 citation statements)

References 12 publications

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“…2. OF is a cylindrical symmetric part controlled by a core that has a uniform refractive index [16,17]. Moreover, in the design of disaster detection systems, other optical components are used such as multiplexers, couplers, connectors etc.…”

Section: Distributed Of Brillouin Sensing Network Based On Of Andmentioning

confidence: 99%

“…The authors of [16,23] have reported that BFS is linearly dependent on both pressure P and temperature T given in (7). Gu et al [23] proposed dual path distributed Brillouin sensors for simultaneous temperature and pressure monitoring.…”

Section: Monitoring Of Pressure and Temperature Changes Through Bfs Vmentioning

confidence: 99%

“…Gu et al [23] proposed dual path distributed Brillouin sensors for simultaneous temperature and pressure monitoring. Therefore, Sonneville et al [16] showed that the use of temperature sensors based on Brillouin scattering allows the measurement of pressure and temperature…”

Section: Monitoring Of Pressure and Temperature Changes Through Bfs Vmentioning

confidence: 99%

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Simultaneous monitoring of temperature, pressure, and strain through Brillouin sensors and a hybrid BOTDA/FBG for disasters detection systems

Zrelli

2019

IET Communications

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Section: Distributed Of Brillouin Sensing Network Based On Of Andmentioning

confidence: 99%

Section: Monitoring Of Pressure and Temperature Changes Through Bfs Vmentioning

confidence: 99%

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Simultaneous monitoring of temperature, pressure, and strain through Brillouin sensors and a hybrid BOTDA/FBG for disasters detection systems

Zrelli

2019

IET Communications

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“…The silica anomaly is well documented from molecular dynamics simulations [2][3][4] or from in situ high pressure Raman [3] and Brillouin experiments. The Brillouin frequency shift (BFS) presents a minimum at 2.5 GPa [5]. Recently the silica anomaly was shown to vanish in densified silica glasses, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…It is then postulated that intermediate glasses with pressure [5] or temperature [7] independent elastic moduli can be made by different ways but the determination of the exact a-thermal composition and the question of the structural origin of the a-thermal behavior is still open. This paper reports on the study of a sodium alumino-silicate glass SiO 2 -Na 2 O-Al 2 O 3 in order to determine the a-thermal composition.…”

Section: Introductionmentioning

confidence: 99%

A-thermal elastic behavior of silicate glasses

Rabia¹,

Degioanni²,

Martinet³

et al. 2016

J. Phys.: Condens. Matter

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Depending on the composition of silicate glasses, their elastic moduli can increase or decrease as function of the temperature. Studying the Brillouin frequency shift of these glasses versus temperature allows the a-thermal composition corresponding to an intermediate glass to be determined. In an intermediate glass, the elastic moduli are independent of the temperature over a large temperature range. For sodium alumino-silicate glasses, the a-thermal composition is close to the albite glass (NaAlSi3O8). The structural origin of this property is studied by in situ high temperature Raman scattering. The structure of the intermediate albite glass and of silica are compared at different temperatures between room temperature and 600 °C. When the temperature increases, it is shown that the high frequency shift of the main band at 440 cm(-1) in silica is a consequence of the cristobalite-like alpha-beta transformation of 6-membered rings. This effect is stronger in silica than bond elongation (anharmonic effects). As a consequence, the elastic moduli of silica increase as the temperature increases. In the albite glass, the substitution of 25% of Si(4+) ions by Al(3+) and Na(+) ions decreases the proportion of SiO2 6-membered rings responsible for the silica anomaly. The effects of the silica anomaly balance the anharmonicity in albite glass and give rise to an intermediate a-thermal glass. Different networks, formers or modifiers, can be added to produce different a-thermal glasses with useful mechanical or chemical properties.

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Anisotropic elastic deformation of silica glass under uniaxial stress

Champagnon

Degioanni

Martinet

2014

Journal of Applied Physics

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The difference between the axial and the radial Brillouin strain coefficients of a silica fiber submitted to a uniaxial stress is due to an anisotropic response of the silica submitted to an elastic mechanical stress. The anisotropy recently observed in permanently modified silica for stresses above the elastic limit is demonstrated to exist also in the elastic domain. It is explained by the anisotropic response of the silica structure at the intermediate scale when submitted to shear stresses. An alignment of the Si-O-Si bonds along the principal stress direction is proposed.

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Pressure-independent Brillouin Fiber Optic Sensors for temperature measurements

Cited by 5 publications

References 12 publications

Simultaneous monitoring of temperature, pressure, and strain through Brillouin sensors and a hybrid BOTDA/FBG for disasters detection systems

Simultaneous monitoring of temperature, pressure, and strain through Brillouin sensors and a hybrid BOTDA/FBG for disasters detection systems

A-thermal elastic behavior of silicate glasses

Anisotropic elastic deformation of silica glass under uniaxial stress

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