FENG Yuxiang; WANG Yuchen; TONG Jiahuan; LYU Lidong

doi:10.7498/aps.74.20241652

Abstract

Distributed optical fiber temperature measurement system is widely used in the fields of substation, power cable, natural gas transmission pipeline and other temperature measurement systems. It can continuously measure the temperature information at each location along the sensing direction. Raman distributed optical fiber temperature measurement system demodulates the temperature information based on Raman Stokes scattered light and anti-Stokes scattered light power, and the Raman scattering light power directly affects the temperature measurement accuracy. So, it is a challenging task to control the hardware of the system to ensure the feasiblity of the Raman sacttering signals. The laser pulse power, and the gain of avalanche photodetector may vary randomly in the system, resulting in fluctuations in the acquired Raman scattered light power data. Therefore, a scheme of Raman distributed fiber temperature measurement system based on dynamic calibration is proposed in this work, and by setting up the temperature calibration unit and combining the proposed power correction algorithm and previous calibration data, the Raman Stokes scattering light and Raman anti-Stokes scattering light power are calibrated at the same laser pulse power level and avalanche photodetector gain, thereby improving the temperature measurement accuracy of the system. For the performance demonstration of the new scheme, the experimental system adopts 50-ns laser pulse to carry out temperature measurement experiments with a 4.6-km long single-mode fiber. The results show that in the temperature measurement range from 35 ℃ to 95 ℃, based on the traditional temperature demodulation algorithm, the temperature deviation measured is in the range from –5.8 ℃ to 1.0 ℃, and the root mean square error is 4.0 ℃, and by the dynamic calibration algorithm, the deviation of deviation measured is within –0.8 ℃ to 0.9 ℃ and the root mean square error is 0.5 ℃. Therefore, the novel Raman-type distributed optical fiber temperature measurement system proposed in this work has the function to dynamically correct the Raman-type scattered light power to suppress the influence caused by instability of the key devices such as pulsed laser and avalanche photodetector and improve the temperature measurement accuracy, which is valuable in practical engineering applications.

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Corresponding author: LYU Lidong, lvlidong@ahut.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 51977001).

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[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]

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实际温度/℃	测得温度/℃	误差/℃
35.0	36.0	+1.0
45.0	43.0	–2.0
55.0	50.4	–4.6
65.0	64.1	–0.9
75.0	69.6	–5.4
85.0	80.2	–4.8
95.0	89.2	–5.8

DownLoad: CSV

实际温度/℃	测得温度/℃	比值H₁	比值H₂	误差/℃
35.0	35.4	1.0180	1.0150	+0.4
45.0	45.3	1.0100	1.0225	+0.3
55.0	54.6	1.0141	1.0350	–0.4
65.0	64.2	1.0365	1.0366	–0.8
75.0	75.2	1.0204	1.0443	+0.2
85.0	85.9	1.0250	1.0478	+0.9
95.0	95.5	1.0263	1.0500	+0.5

DownLoad: CSV

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Vol. 74, Issue 7 - 2025-04-05

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