Jianhua Cao, Shengtao Lin, Zinan Wang, Bing Han, Yunjiang Rao. Design and Implementation for Ultra-Long-Distance Multi-Point Sensing System Based on Random Fiber Laser[J]. Acta Optica Sinica, 2021, 41(13): 1306006
- Acta Optica Sinica
- Vol. 41, Issue 13, 1306006 (2021)
Fig. 1. Flow chart of equation solution
Fig. 2. Simulation parameters. (a) Raman gain coefficient; (b) loss coefficient; (c) Rayleigh scattering coefficient
Fig. 3. Schematic diagram of second-order random fiber laser
Fig. 4. Spectra of second-order full-open-cavity random fiber laser. (a) Simulated results with different pump powers; (b) experimental result
Fig. 5. Schematic diagram of second-order half-open-cavity random fiber laser system
Fig. 6. Results of second-order half-open-cavity random fiber laser system under 2 W pump power. (a) Simulation result; (b) experimental result
Fig. 7. Schematic diagram of long-distance multi-point sensing system
Fig. 8. Simulation results of different fiber lengths under 2.3 W pump power. (a) 125 km SMF; (b) 150 km SMF; (c) 175 km SMF; (d) 200 km SMF
Fig. 9. Experimental result of 150 km sensing system
Fig. 10. Center wavelength versus micro strain curve
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Table 1. Parameters for simulation
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