Yu Wang, Di Xiao, Yangyang Niu, Jie Yang, Pengxi Yang, Zhaohao Zhu, Guolu Yin, Tao Zhu. Structural Deformation of Fiber Optic Hydrophone Probe Based on Optical Frequency Domain Reflectometry[J]. Acta Optica Sinica, 2023, 43(5): 0528001
- Acta Optica Sinica
- Vol. 43, Issue 5, 0528001 (2023)
Fig. 1. OFDR sensing system and monitoring prototype. (a) OFDR sensing system; (b) monitoring prototype
Fig. 2. Signal demodulation process of OFDR
Fig. 3. Schematic diagram of hydrophone probe shape measurement
Fig. 4. Experimental setup of fiber optic hydrophone probe deformation testing
Fig. 5. Simulation results of deformation of fiber optic hydrophone probe. (a) Outside of probe; (b) cross section of probe
Fig. 6. Wavelength shift caused by deformation of fiber optic hydrophone probe under different pressures. (a) Hydrophone probe 1 covered with soft rubber; (b) hydrophone probe 2 encapsulated by metal skeleton
Fig. 7. Constriction radius of fiber optic hydrophone probe and wavelength shift varying with pressure. (a) Hydrophone probe 1 covered with soft rubber; (b) hydrophone probe 2 encapsulated by metal skeleton
Fig. 8. Wavelength shift of fiber optic hydrophone probe 1 at pressure of 6 Mpa
Fig. 9. Reconstruction results of cross-sectional deformation of fiber optic hydrophone probes under different static pressures. (a) Hydrophone probe 1 covered with soft rubber; (b) hydrophone probe 2 encapsulated by metal skeleton
Fig. 10. Reconstruction result of cross-sectional deformation of fiber optic hydrophone probes under static pressure of 6 MPa
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