Citian You, Peichao Chen, Panfeng Ding. Experimental Research on Single Mode-Multimode-Single Mode Fiber Structure in Security System[J]. Laser & Optoelectronics Progress, 2018, 55(6): 060603
- Laser & Optoelectronics Progress
- Vol. 55, Issue 6, 060603 (2018)
Fig. 1. Schematic of the SMS optical fiber structure
Fig. 2. Schematic diagram of the sensing system
Fig. 3. System interference signal under external disturbance
Fig. 4. Interference signal after wavelet transform
Fig. 5. Interference signal after knocking fence
Fig. 6. Interference signal after waggling fence
Fig. 7. Interference signal after treading optical fiber
Fig. 8. Interference signal after walking
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