Concatenated Bragg grating fiber-optic sensors for simultaneous measurement of curvature, temperature, and axial pressure
| Autor: | S. Shojaei Khatouni, S. Zakowski, R. Hosseini Vedad, M. Masjedi, A. Askar, J. C. E. Ewald, H. K. Trieu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Journal of Sensors and Sensor Systems, Vol 13, Pp 147-155 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2194-8771 2194-878X |
| DOI: | 10.5194/jsss-13-147-2024 |
| Popis: | This paper presents the development and evaluation of four sensors based on multiple fiber Bragg grating (FBG) constellations embedded in a silicon dioxide single-mode fiber (SMF) for simultaneous measurement of pressure, temperature, and bending curvature. We applied dimension and material variations – including core, cladding, and coating dimensions; coating material; and the number and arrangement of the FBGs – to optimize the reflected signal response and increase information density. A bootstrap-aggregated ensemble of decision trees was used to evaluate the sensor signal. The results show that adjusting the cladding-to-coating ratio led to significant improvements in pressure and bending prediction performance. Additionally, two combined FBGs were fabricated to form a fiber Bragg grating Fabry–Pérot interferometer, which enabled the detection of curvature with a root-mean-square error (RMSE) of 0.0034 L mm−1 (R2=1), axial pressure with an RMSE of 0.0564 bar (R2=0.99), and temperature with an RMSE of 0.0265 °C (R2=1). At the time of writing, there is no commercially available instrument that can perform these measurements simultaneously. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|