Yu Miao, Sun Mingyang, He Yutong, Zhang Chongfu, Zheng Zhifeng, Kong Qian. Optimization of low frequency response performance of phase sensitive optical time-domain reflectometry system[J]. Infrared and Laser Engineering, 2022, 51(5): 20211125. doi: 10.3788/IRLA20211125
Citation:
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Yu Miao, Sun Mingyang, He Yutong, Zhang Chongfu, Zheng Zhifeng, Kong Qian. Optimization of low frequency response performance of phase sensitive optical time-domain reflectometry system[J]. Infrared and Laser Engineering, 2022, 51(5): 20211125. doi: 10.3788/IRLA20211125
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Optimization of low frequency response performance of phase sensitive optical time-domain reflectometry system
- 1.
School of Electronic Information Engineering, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China
- 2.
College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130012, China
- 3.
Zhuhai Pegasus Optoelectronics Technology Co., Ltd., Zhuhai 519000, China
Funds:
Young Innovative Talents Program of Guangdong University(2018 KQNCX332);Introduction of Leading Talents Program of Guangdong Province(00201507);Education Department of Guangdong Province Created Group Project(2018 KCXTD033);Zhongshan Social welfare Science and Technology Research Project(2018 B1021,2020 B2018); Cooperation project between universities in Chongqing and affiliated institutes of Chinese Academy of Sciences(HZ2021014);Major project of Chongqing Education Commission(KJZDM202001401)
- Received Date: 2021-12-05
- Rev Recd Date:
2022-01-25
- Accepted Date:
2022-02-23
- Publish Date:
2022-06-08
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Abstract
Phase sensitive optical time-domain reflectometry system due to its advantages of distributed optical fiber sensing technology has a high application prospect in low frequency monitoring fields such as distributed hydrophone, fracture micro-seismic detection and natural disaster warning. The problem of different clock source of pulse chopper signal and frequency modulated signal in the system was verified and the influence was analyzed theoretically in this paper. A dual-channel synchronous clock source was designed to generate pulse chopper signal and frequency modulation signal to reduce the random low-frequency phase noise of frequency modulation signal in each pulse repetition period and improve the phase stability of the detection pulse light. The acousti-optic modulator of typical phase-sensitive optical time-domain reflectometry system based on heterodyne coherent detection was driven by clock homology and clock non-homology, a signal generator drives a piezoelectric ceramic wrapped in optical fibers to generate disturbance signals in different frequency bands. The experimental results show that under the same test conditions, the former is superior to the latter in the aspects of SNR, phase demodulation quality and frequency response in low frequency band. The minimum response frequency is 0.1 Hz, which is 2 orders of magnitude higher than the latter, and reduces the interference of low frequency noise in the system. The method was easy to implement and compatible with the existing low frequency performance optimization methods or structures to further improve the low frequency response performance of the system.
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References
[1]
|
Lu Y, Zhu T, Chen L, et al. Distributed vibration sensor based on coherent detection of Phase-OTDR [J]. Journal of Lightwave Technology, 2010, 28(22): 3243-3249. |
[2]
|
Ye Qing, Pan Zhengqing, Wang Zhaoayong, et al. Progress of research and applications of phase-sensitive optical time domain reflectometry [J]. Chinese Journal of Lasers, 2017, 44(6): 060001. (in Chinese) |
[3]
|
Cai Haiwen, Ye Qing, Wang Zhaoyong, et al. Distributed optical fiber acoustic sensing technology based on coherent rayleigh scattering [J]. Laser & Optoelectronics Progress, 2020, 57(5): 050001. (in Chinese) |
[4]
|
Zhang Xuping, Ding Zhewen, Hong Rui, et al. Phase sensitive optical time-domain reflective distributed optical fiber sensing technology [J]. Acta Optica Sinica, 2021, 41(1): 0106004. (in Chinese) |
[5]
|
Meng Zhou, Chen Wei, Wang Jianfei, et al. Research progress of fiber optic hydrophone technology [J]. Laser & Optoelectronics Progress, 2021, 58(13): 1306009. (in Chinese) |
[6]
|
Dong Xiaowei, Xie Bin, Pan Yong, et al. Development and application of distributed optical fiber acoustic vibration sensor system [J]. Journal of Applied Optics, 2020, 41(6): 1298-1304. doi: 10.5768/JAO202041.0608002 |
[7]
|
Wang Shun. Research and application of fiber-optic low-frequency acoustic sensing technology[D]. Wuhan: Huazhong University of Science & Technology, 2016. (in Chinese) |
[8]
|
Fu Siyi. Research on the fading-suppression broadband φ-OTDR[D]. Nanjing: Nanjing University, 2019. (in Chinese) |
[9]
|
Liu Huawei. Research on influence and suppression algorithm of polarization dependence in distributed optical fiber vibration sensing system[D]. Nanjing: Southeast University, 2020. (in Chinese) |
[10]
|
Qin Z, Liang C, Bao X. Wavelet denoising method for improving detection performance of distributed vibration sensor [J]. IEEE Photonics Technology Letters, 2012, 24(7): 542-544. doi: 10.1109/LPT.2011.2182643 |
[11]
|
Zhang X, Sun Z, Shan Y, et al. A high performance distributed optical fiber sensor based on Φ-OTDR for dynamic strain measurement [J]. Photonics Journal IEEE, 2017, 9(3): 1-12. |
[12]
|
Zeng Tao, Yin Pilei, Yang Xiaopeng, et al. Time and phase synchronization for distributed aperture coherent radar [J]. Journal of Radars, 2013(1): 105-110. |
[13]
|
Yu Miao, Sun Mingyang, Zhang Yaolu, et al. Phase ambiguity and unwrapping of phase-sensitive optical time-domain reflectometer [J]. Infrared and Laser Engineering, 2021, 50(5): 20200437. (in Chinese) doi: 10.3788/IRLA20200437 |
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