Optics and Precision Engineering, Volume. 32, Issue 17, 2645(2024)
Single optical channel based Raman distributed optical fiber temperature measurement system
Figures & Tables(10)
Fig. 1. Schematic diagram of Raman distributed fiber temperature sensing experimental system
Fig. 4. Results of temperature demodulation by traditional dual-channel based scheme
Fig. 5. Temperature information within heating zone by Raman Stokes scattering data
Fig. 6. Temperature information within heating zone by Raman anti-Stokes scattering data
Table 1. Contrast of temperature data
View tableView in ArticleTable 1. Contrast of temperature data
实际温度 测得温度 误差 35.0 36.2 +1.2 45.0 46.1 +1.1 55.0 56.1 +1.1 65.0 65.3 +0.3 75.0 75.3 +0.3 85.0 85.0 0.0 95.0 94.1 -0.9
Table 2. Contrast of temperature data demodulated by Raman Stokes scattering light
View tableView in ArticleTable 2. Contrast of temperature data demodulated by Raman Stokes scattering light
实际温度/℃ 变化系数R 测得温度/℃ 误差/℃ 35.0 0.994 9 35.7 +0.7 45.0 0.997 9 44.5 -0.6 55.0 1.007 7 54.6 -0.4 65.0 1.013 0 68.3 +3.3 75.0 1.017 6 75.5 +0.5 85.0 1.024 3 82.1 -2.9 95.0 1.014 4 93.2 -1.8
Table 3. Contrast of temperature data demodulated by anti-strokes scattering light
View tableView in ArticleTable 3. Contrast of temperature data demodulated by anti-strokes scattering light
实际温度/℃ 比值R 测得温度/℃ 误差/℃ 35.0 1.017 4 34.7 -0.3 45.0 1.018 8 44.8 -0.2 55.0 1.010 3 55.8 +0.8 65.0 1.015 0 67.2 +2.2 75.0 1.032 1 76.1 +1.1 85.0 1.029 4 85.1 +0.1 95.0 1.050 2 94.7 -0.3
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Yuxiang FENG, Zhikai LIU, Minnan HUANG, Yishan WANG, Lidong LYU. Single optical channel based Raman distributed optical fiber temperature measurement system[J]. Optics and Precision Engineering, 2024, 32(17): 2645
Paper Information
Category: Precision Measurement and Sensing
Received: May. 22, 2024
Accepted: --
Published Online: Nov. 18, 2024
The Author Email: LYU Lidong (lvlidong@ahut.edu.cn)
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