23 April 2017 Dynamic measurements of physical quantities in extreme environment using fiber Bragg grating
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103234K (2017) https://doi.org/10.1117/12.2265670
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
Fiber Bragg Gratings (FBGs) are used to measure shock velocity, detonation velocity, shock wave profile or pressure profile in inert and energetic materials. Such thin probe, with a diameter below 150 μm, can be inserted directly into materials without disturbing the physical phenomena. Chirped FBGs are used to track the shock wave in the grating using wavelengths. The velocity (few km/s) and shock wave profile measurements are realized by recording the CFBG’s reflected spectral width. Pressure measurements at few GPa levels use dynamic spectrometers, two approaches are compared: parallel acquisition using an Arrayed-Waveguide-Grating and time-multiplexing by wavelength-to-time conversion using dispersion.
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Y. Barbarin, Y. Barbarin, A. Lefrançois, A. Lefrançois, S. Magne, S. Magne, V. Chuzeville, V. Chuzeville, M. Balbarie, M. Balbarie, L. Jacquet, L. Jacquet, F. Sinatti, F. Sinatti, A. Osmont, A. Osmont, J. Luc, J. Luc, } "Dynamic measurements of physical quantities in extreme environment using fiber Bragg grating", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103234K (23 April 2017); doi: 10.1117/12.2265670; https://doi.org/10.1117/12.2265670
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