Chinese Journal of Lasers, Volume. 45, Issue 5, 510002(2018)
Research on Polarization Control of Distributed Optical Fiber Sensing System Based on FPGA
Figures & Tables(6)
Fig. 1. Schematic of distributed fiber-optic sensor based on dual Mach-Zehnder type
Fig. 3. Bandwidth test resluts of AD637. (a) Curve of the relationship between output VRMS and frequency; (b) curve of the relationship between output VRMS and input Vpp
Fig. 4. (a) Output signals before polarization control; (b) output signals after polarization control
Table 1. Comparison between the positioning accuracy before and after polarization control
View tableTable 1. Comparison between the positioning accuracy before and after polarization control
Status Position Position error /m ±10 ±20 ±30-±50 >±50 Before polarization control 200 m 36% 20% 31% 13% 1.3 km 33% 31% 31% 5% 2.5 km 29% 24% 35% 12% After polarization control 200 m 62% 27% 11% 0 1.3 km 65% 28% 6% 1% 2.5 km 70% 25% 5% 0%
Table 2. Polarization control time
View tableTable 2. Polarization control time
Number of events 1 2 3 4 5 Average Polarization control time /s 0.838 0.844 0.65 0.552 1.02 0.7808
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Li Pengcheng, Liu Kun, Jiang Junfeng, Pan Liang, Ma Pengfei, Li Zhichen, Zhang Zhao, Li Xin, Liu Tiegen. Research on Polarization Control of Distributed Optical Fiber Sensing System Based on FPGA[J]. Chinese Journal of Lasers, 2018, 45(5): 510002
Paper Information
Category: remote sensing and sensor
Received: Oct. 17, 2017
Accepted: --
Published Online: May. 2, 2018
The Author Email: Pengcheng Li (279474137@qq.com)
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