Shuo Li, Jiqiang Wang, Zhongguo Gao, Jianxin Gao, Zemin Hou, Long Jiang, Moyu Hou. Research on spatial resolution improvement of distributed optical fiber temperature measurement based on Raman signal segmentation and reconstruction[J]. Infrared and Laser Engineering, 2023, 52(10): 20230076
- Infrared and Laser Engineering
- Vol. 52, Issue 10, 20230076 (2023)
Fig. 1. Optical pulse transmission process
Fig. 2. System structure diagram
Fig. 3. (a) Ratio curve at a laser pulse width of 20 ns; (b) Ratio curve at a laser pulse width of 50 ns
Fig. 4. Temperature measurement curve at 92.1 ℃
Fig. 5. Temperature error between conventional demodulation method and Raman signal segmentation and reconstruction method
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Table 1. Comparison of traditional temperature demodulation and reconfigured temperature demodulation
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