Detection Accuracy Improvement of Compact and Low-Cost BOTDR System Using Locally Stimulated Scattering Excitation

Xinyu Liu; Liping Chen; Yuming Chen; Yongzheng Li; Qiuming Huang; Yingkai Chen; Linfeng Guo; Xiaomin Xu

doi:10.3788/AOS240540

Acta Optica Sinica, Volume. 44, Issue 11, 1106006(2024)

Detection Accuracy Improvement of Compact and Low-Cost BOTDR System Using Locally Stimulated Scattering Excitation

Xinyu Liu^1,2, Liping Chen³, Yuming Chen⁴, Yongzheng Li^5、**, Qiuming Huang^1,2, Yingkai Chen^1,2, Linfeng Guo^1,2,6、*, and Xiaomin Xu^6,7、***

Author Affiliations

¹School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu, China

²Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing 210044, Jiangsu, China

³China Railway (Shanghai) Investment Group Co., Ltd., Shanghai 200126, China

⁴Jiangsu Product Quality Testing＆Inspection Institute, Nanjing 210007, Jiangsu, China

⁵China Railway No. 3 Group East China Construction Co., Ltd., Nanjing 211153, Jiangsu, China

⁶Jiangsu International Joint Laboratory on Meterological Photonics and Optoelectronic Detection, Nanjing 210044, Jiangsu, China

⁷Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom

show less

Abstract Get PDF(in Chinese)

Figures & Tables(13)

Fig. 1. Process of Brillouin scattering generation. (a) Process of Brillouin Stokes light generation; (b) process of Brillouin anti-Stokes light generation

Download full size

Fig. 2. Power of transmitted light and backscattered light varying with input power^[24]

Download full size

Fig. 3. Device diagram of BOTDR system based on short-time Fourier transform

Download full size

Fig. 4. Frequency shift distributions of the optical fiber under different currents in 20-900 m when the pulse frequency is 40 kHz and the length of the optical fiber to be measured is 1009 m (frequency is decreased by 10.4 GHz). (a) 500 mA; (b) 400 mA; (c) 300 mA; (d) 200 mA

Download full size

Fig. 5. Variation curves of the peak intensity of scattered light along the optical fiber at different currents when the pulse frequency is 40 kHz and the length of the optical fiber to be measured is 1009 m. (a) 500 mA; (b) 400 mA; (c) 300 mA; (d) 200 mA

Download full size

Fig. 6. Frequency shift distributions of the optical fiber under different current in 20-900 m when the pulse frequency is 10 kHz and the length of the optical fiber to be measured is 2019 m (frequency is decreased by 10.4 GHz). (a) 500 mA; (b) 400 mA; (c) 300 mA; (d) 200 mA

Download full size

Fig. 7. Variations of the peak intensity of scattered light along the optical fiber at different currents when the pulse frequency is 10 kHz and the length of the optical fiber to be measured is 2019 m. (a) 500 mA; (b) 400 mA; (c) 300 mA; (d) 200 mA

Download full size

Fig. 8. RMSE comparison of fiber segments at different currents when the pulse frequency is 10 kHz and the length of the optical fiber to be measured is 2019 m

Download full size

Fig. 9. Frequency shift distributions of the optical fiber under different currents in 20-900 m when the pulse frequency is 20 kHz and the length of the optical fiber to be measured is 2000 m (frequency is decreased by 10.4 GHz). (a) 500 mA; (b) 200 mA

Download full size

Fig. 10. Variation curves of the peak intensity of scattered light along the optical fiber at different currents when the pulse frequency is 20 kHz and the length of the optical fiber to be measured is 2000 m. (a) 500 mA; (b) 200 mA

Download full size

Table 1. RMSE at different positions under different currents when the pulse frequency is 40 kHz and the fiber length to be measured is 1009 m
View table
Table 1. RMSE at different positions under different currents when the pulse frequency is 40 kHz and the fiber length to be measured is 1009 m
Current /mA Power /dBm RMSE /MHz
20-200 m 200-400 m 400-600 m 600-800 m 800-900 m
500 0.68 1.06 1.02 0.96 0.94 0.99
400 0.47 1.10 1.19 1.08 1.09 1.07
300 0.08 1.23 1.33 1.21 1.30 1.15
200 -0.79 1.48 1.44 1.50 1.44 1.44

Table 2. Segmented RMSE at different currents when the pulse frequency is 10 kHz and the fiber length to be measured is 2019 m
View table
Table 2. Segmented RMSE at different currents when the pulse frequency is 10 kHz and the fiber length to be measured is 2019 m
Current /mA Power /dBm RMSE /MHz
1 2 3 4 5 6 7 8
500 0.68 0.68 0.72 0.81 0.77 0.88 0.77 0.99 0.86
400 0.46 0.85 0.75 0.75 0.83 0.74 0.80 0.80 0.78
300 0.07 0.98 0.83 0.85 0.88 0.82 0.81 0.93 0.81
200 -0.81 1.31 1.11 1.23 1.16 1.17 1.03 1.01 1.06

Table 3. RMSE and temperature measurement accuracy at different currents when the pulse frequency is 20 kHz and the length of the optical fiber to be measured is 2000 m
View table
Table 3. RMSE and temperature measurement accuracy at different currents when the pulse frequency is 20 kHz and the length of the optical fiber to be measured is 2000 m
Current /mA Power /dBm RMSE /MHz Accuracy /℃
300 m 800 m 300 m 800 m
500 1.46 0.45 0.43 0.35 0.33
200 1.27 0.68 0.69 0.52 0.53

Tools

Get Citation

Copy Citation Text

Xinyu Liu, Liping Chen, Yuming Chen, Yongzheng Li, Qiuming Huang, Yingkai Chen, Linfeng Guo, Xiaomin Xu. Detection Accuracy Improvement of Compact and Low-Cost BOTDR System Using Locally Stimulated Scattering Excitation[J]. Acta Optica Sinica, 2024, 44(11): 1106006

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category: Fiber Optics and Optical Communications

Received: Jan. 22, 2024

Accepted: Mar. 11, 2024

Published Online: Jun. 12, 2024

The Author Email: Li Yongzheng (liyongzhengzt@163.com), Guo Linfeng (guolf_nj@163.com), Xu Xiaomin (xx787@eng.cam.ac.uk)

DOI:10.3788/AOS240540

CSTR:32393.14.AOS240540

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. RMSE at different positions under different currents when the pulse frequency is 40 kHz and the fiber length to be measured is 1009 m

Table 1. RMSE at different positions under different currents when the pulse frequency is 40 kHz and the fiber length to be measured is 1009 m

Table 2. Segmented RMSE at different currents when the pulse frequency is 10 kHz and the fiber length to be measured is 2019 m

Table 2. Segmented RMSE at different currents when the pulse frequency is 10 kHz and the fiber length to be measured is 2019 m

Table 3. RMSE and temperature measurement accuracy at different currents when the pulse frequency is 20 kHz and the length of the optical fiber to be measured is 2000 m

Table 3. RMSE and temperature measurement accuracy at different currents when the pulse frequency is 20 kHz and the length of the optical fiber to be measured is 2000 m