Qingshan Wang, Weijie Wang, Xu Guo, Lina Mao, Jiqing Mu, Lei Chen. Error Correction Method for Distributed Fiber Raman Temperature Sensor[J]. Laser & Optoelectronics Progress, 2020, 57(17): 170602
- Laser & Optoelectronics Progress
- Vol. 57, Issue 17, 170602 (2020)
Fig. 1. Distributed optical fiber temperature sensor structure diagram
Fig. 2. Contrast of dispersion offset compensation by different interpolation algorithms
Fig. 3. Flow chart of linear interpolation algorithm
Fig. 4. Distributed optical fiber temperature measurement system
Fig. 5. Raman scattering signals
Fig. 6. Corresponding measurement temperature before and after loss coefficient compensation. (a) Before loss coefficient compensation; (b) after loss coefficient compensation
Fig. 7. Contrast of dispersion compensation effect before and after linear interpolation
Fig. 8. Temperature measurement accuracy before and after dispersion compensation
Fig. 9. Signal errors at different measuring time
Fig. 10. Temperature measurement accuracy before and after self-compensation error
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Table 1. Key devices and their performance parameters of the distributed optical fiber temperature measurement system
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Table 2. Experiment results before and after fluctuation compensation
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