Si Xiaolong, Wu Linfang, Zhuang Yan, Mou Chengbo, Liu Yunqi. Quasi-Distributed High-Temperature Monitoring System Based on Fiber Bragg Grating[J]. Laser & Optoelectronics Progress, 2021, 58(1): 106001
- Laser & Optoelectronics Progress
- Vol. 58, Issue 1, 106001 (2021)
Fig. 1. Fabrication of FBGs. (a) Transmission spectrum of FBGs under different pulse exposure conditions; (b) wavelength and contrast of FBGs under different pulse exposure conditions
Fig. 2. Schematic diagram of annealing setup for FBGs
Fig. 3. Annealing experiment results of FBGs. (a) Contrast of FBGs under high temperature; (b) transmission spectrum of FBG under 22.9 ℃; (c) transmission spectrum of FBG under 801 ℃
Fig. 4. Experiment results of temperature sensing. (a) Repeatability experiments of temperature sensing; (b) fitting results of three experimental data
Fig. 5. Stainless steel packaged FBG sensor
Fig. 6. Schematic diagram of quasi-distribution temperature measurement. (a) Comprehensive schematic; (b) partial schematic
Fig. 7. Relationship between wavelength of FBGs and annealing time
Fig. 8. Calibration results of FBG (#31) temperature sensor
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Table 1. Effect of encapsulation using stainless steel tube on the temperature sensitivity of FBGs unit: pm·℃-1
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Table 2. Experimental results of quasi-distributed high temperature monitoring system unit: ℃
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