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Conference papers
Dynamic Measurements of Physical Quantities in Extreme Environment using Fiber Bragg Grating
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.
Cited literature [8 references]
https://hal-cea.archives-ouvertes.fr/cea-02549087
Contributor : Yohan Barbarin Connect in order to contact the contributor
Submitted on : Tuesday, April 21, 2020 - 11:01:26 AM
Last modification on : Thursday, February 17, 2022 - 10:08:03 AM
Contributor : Yohan Barbarin Connect in order to contact the contributor
Submitted on : Tuesday, April 21, 2020 - 11:01:26 AM
Last modification on : Thursday, February 17, 2022 - 10:08:03 AM
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OFS2017 V2.0 soumis.pdf
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