Xiongxing Zhang, Zhe Sun, Xueqing Zhao, Zihao Gao, Xiaojun Feng, Wen Pan, Haibin Chen. Simulation and Experimental Research on Fiber-Optic Dynamic Pressure Sensor Based on a Fiber-Tip Film-Type Fabry-Perot Cavity[J]. Acta Optica Sinica, 2024, 44(7): 0728003
- Acta Optica Sinica
- Vol. 44, Issue 7, 0728003 (2024)
Fig. 1. Structure diagram of thin-film fiber-optic F-P pressure sensor
Fig. 2. Thin-film fiber-optic F-P pressure sensor. (a) Optical micrograph of sensor head (side view); (b) physical photograph of thin-film fiber-optic F-P pressure sensor
Fig. 3. Two-dimensional equivalent model
Fig. 4. Simulation process
Fig. 5. Electromagnetic energy distributions of sensor at different wavelengths. (a) At wavelength of 1600 nm; (b) at wavelength of 1543 nm; (c) at wavelength of 1535.6 nm
Fig. 6. Reflection spectrum of sensor
Fig. 7. Simulation diagram of thin-film fiber-optic F-P pressure sensor structure model under pressure. (a) Pressure deformation diagram of sensor structure; (b) three-dimensional observation diagram of sensor under pressure
Fig. 8. F-P cavity length variations of sensors under different pressure loads
Fig. 9. Resonance frequency of sensor
Fig. 10. Experimental system for pressure testing
Fig. 11. Reflection spectrum of thin-film fiber-optic F-P pressure sensor without pressure loading
Fig. 12. Reflection spectra of thin-film fiber-optic F-P pressure sensor under different pressures
Fig. 13. Relationship between pressure and wavelength of thin film fiber-optic F-P pressure sensor
Fig. 14. Schematic diagram of dynamic pressure measuring experimental setup
Fig. 15. Shock wave pressure signal
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