Jinjin Zhao, Jiaxuan Wang, Jiayuan Wang, Hongdan Wan, Zuxing Zhang. Multi-Frequency Optical Fiber Acoustic Sensor Based on Graphene Oxide Microcavity[J]. Laser & Optoelectronics Progress, 2021, 58(21): 2123002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 21, 2123002 (2021)
Fig. 1. Interference spectra at different FP microcavity lengths
Fig. 2. Glass tube end surface covered with GO film
Fig. 3. Measuring principle of interference spectrum
Fig. 4. Interference spectra of optical fiber acoustic vibration sensor in different environments. (a) Air; (b) water
Fig. 5. Simulation result of interference spectra of FP cavity
Fig. 6. Test and experiment system of acoustic vibration signal
Fig. 7. Spectra diagram of single frequency acoustic vibration signal in air. (a) 500‒900 Hz; (b) 1‒10 kHz; (c) 11‒19 kHz
Fig. 8. Spectra diagram of single frequency acoustic vibration signal under water. (a) 1‒10 kHz; (b) 11‒20 kHz
Fig. 9. Results of dual-frequency acoustic vibration in different environments. (a) Air; (b) water
Fig. 10. Results of three-frequency acoustic vibration in different environments. (a) Air; (b) water
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