Qianyu REN, Pinggang JIA, Jiang QIAN, Jun WANG, Wenyi LIU, Jijun XIONG. Three-wavelength Dynamic Demodulation Technique for Multi-cavity Fiber Fabry-Perot Sensor[J]. Acta Photonica Sinica, 2022, 51(9): 0906005
- Acta Photonica Sinica
- Vol. 51, Issue 9, 0906005 (2022)
Fig. 1. Structure of typical multi-cavity fiber-optic EFPI sensor
Fig. 2. Schematic of the three-wavelength demodulation technology for the interrogation of multi-cavity F-P sensors
Fig. 3. Diagram of interference signals simulation with the center wavelength of 1 548.14，1 550.224，and 1 552.744 nm，respectively
Fig. 4. The simulation results of the demodulation algorithm
Fig. 5. The noise performance of the demodulation system
Fig. 6. The experimental results with initial F-P cavity length of 39.29 μm
Fig. 7. The experimental results with initial F-P cavity length of 64.8 μm
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