Lei SHI, Xing-hua TU, Zheng-you SHAN, Zhan WANG. Research on Acoustic Sensing of Fiber Bragg Grating based on Edge Filter Detection[J]. Study On Optical Communications, 2023, 49(2): 40
- Study On Optical Communications
- Vol. 49, Issue 2, 40 (2023)
Fig. 1. Schematic diagram of edge filtering method
Fig. 2. The wavelength of the sound wave is 2 cm
Fig. 3. The wavelength of the sound wave is 20 cm
Fig. 4. The pressure effect of the transverse sound
Fig. 5. The pressure effect of the longitudinal sound
Fig. 6. Reflection spectra of three grating structures and their linear regions ①②③
Fig. 7. Laser reflectivity curves under different grating structures
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Table 1. Characteristic parameters of different materials
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Table 2. Detection results of three grating structures
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