Junjie Wang, Jing Liu, Zhengyi Fu, Chenglei Chu, Minghong Yang. Miniature Underwater Shock Wave Pressure Sensor Based on All-Silica Optical Fiber Fizeau Cavity[J]. Acta Optica Sinica, 2019, 39(2): 0212010
- Acta Optica Sinica
- Vol. 39, Issue 2, 0212010 (2019)
Fig. 1. All-silica fiber Fizeau cavity and its mechanical analysis
Fig. 2. Variation curve of interference fringe contrast with cavity length
Fig. 3. Testing method of Fizeau cavity transfer function in reflection and its key parameters
Fig. 4. Fabrication procedure for pressure sensor. (a) Welding of SMF and quartz glass capillary; (b) slicing of quartz glass capillary; (c) welding of SMF; (d) slicing of SMF; (e) polishing of SMF; (f) corrosion of SMF by using HF
Fig. 5. Inverse detection transfer function of Fizeau cavity. (a) Before HF acid corrosion; (b) after HF acid corrosion
Fig. 6. (a) Fizeau cavity(×500); (b) shock wave pressure probe
Fig. 7. Phase high-speed demodulation system based on Fizeau cavity
Fig. 8. Static pressure calibrated data for Fizeau cavity probe
Fig. 9. (a) The first and (b) the second dynamic calibrated experimental data
Fig. 10. Measured data of PTS water switch. (a) Original output voltage corresponding to Laser 0; (b) original output voltage corresponding to Laser 1; (c) original output voltage corresponding to Laser 2; (d) shock wave pressure curve synthesized by three-wavelength laser interference output
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