A Novel Distributed Vibration Sensor Based on Fading Noise Reduction in Multi-Mode Fiber
Multi-mode fiber (MMF) is used in a polarization-sensitive optical time domain reflectometer (OTDR) for vibration event location and spectrum analysis. The vibration events acting on MMF are considered to be the optical polarization state and phase diversifying process for fading noise reduction. In...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/20/8028 |
| _version_ | 1797469920266551296 |
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| author | Lidong Lu Xingchen Su Chenglong Zhang Qinghao Gao Hongwei Yang |
| author_facet | Lidong Lu Xingchen Su Chenglong Zhang Qinghao Gao Hongwei Yang |
| author_sort | Lidong Lu |
| collection | DOAJ |
| description | Multi-mode fiber (MMF) is used in a polarization-sensitive optical time domain reflectometer (OTDR) for vibration event location and spectrum analysis. The vibration events acting on MMF are considered to be the optical polarization state and phase diversifying process for fading noise reduction. In addition, data averaging with continuous positions and the fast Fourier transform (FFT) method is proposed to extract the spectrum of the vibration events. In the experiment, the vibration events are loaded at the positions of 5.167 and 10.145 km, respectively, along MMF. The experimental results demonstrate that the vibration event can effectively diversify the optical polarization state and phase of the Rayleigh scattering light to make the averaged OTDR trace behind the vibration position converge rapidly, which helps to locate corresponding vibration events and extract the vibration spectrum. It is inferred that the new distributed vibration sensor shall have a lower false alarm rate, as it can greatly reduce the errors caused by randomness of the sensing light signals. Additionally, it also saves time in comparison with the method that analyzes the vibration spectra for all the positions along the fiber under test. |
| first_indexed | 2024-03-09T19:29:47Z |
| format | Article |
| id | doaj.art-7ee1cef393f848fe92d6fe9bac59284c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T19:29:47Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-7ee1cef393f848fe92d6fe9bac59284c2023-11-24T02:30:37ZengMDPI AGSensors1424-82202022-10-012220802810.3390/s22208028A Novel Distributed Vibration Sensor Based on Fading Noise Reduction in Multi-Mode FiberLidong Lu0Xingchen Su1Chenglong Zhang2Qinghao Gao3Hongwei Yang4School of Electrical and Information Engineering, Anhui University of Technology, Maanshan 243002, ChinaSchool of Electrical and Information Engineering, Anhui University of Technology, Maanshan 243002, ChinaSchool of Electrical and Information Engineering, Anhui University of Technology, Maanshan 243002, ChinaSchool of Electrical and Information Engineering, Anhui University of Technology, Maanshan 243002, ChinaSchool of Electrical and Information Engineering, Anhui University of Technology, Maanshan 243002, ChinaMulti-mode fiber (MMF) is used in a polarization-sensitive optical time domain reflectometer (OTDR) for vibration event location and spectrum analysis. The vibration events acting on MMF are considered to be the optical polarization state and phase diversifying process for fading noise reduction. In addition, data averaging with continuous positions and the fast Fourier transform (FFT) method is proposed to extract the spectrum of the vibration events. In the experiment, the vibration events are loaded at the positions of 5.167 and 10.145 km, respectively, along MMF. The experimental results demonstrate that the vibration event can effectively diversify the optical polarization state and phase of the Rayleigh scattering light to make the averaged OTDR trace behind the vibration position converge rapidly, which helps to locate corresponding vibration events and extract the vibration spectrum. It is inferred that the new distributed vibration sensor shall have a lower false alarm rate, as it can greatly reduce the errors caused by randomness of the sensing light signals. Additionally, it also saves time in comparison with the method that analyzes the vibration spectra for all the positions along the fiber under test.https://www.mdpi.com/1424-8220/22/20/8028optical fiber sensorvibration locationmulti-mode fiber |
| spellingShingle | Lidong Lu Xingchen Su Chenglong Zhang Qinghao Gao Hongwei Yang A Novel Distributed Vibration Sensor Based on Fading Noise Reduction in Multi-Mode Fiber Sensors optical fiber sensor vibration location multi-mode fiber |
| title | A Novel Distributed Vibration Sensor Based on Fading Noise Reduction in Multi-Mode Fiber |
| title_full | A Novel Distributed Vibration Sensor Based on Fading Noise Reduction in Multi-Mode Fiber |
| title_fullStr | A Novel Distributed Vibration Sensor Based on Fading Noise Reduction in Multi-Mode Fiber |
| title_full_unstemmed | A Novel Distributed Vibration Sensor Based on Fading Noise Reduction in Multi-Mode Fiber |
| title_short | A Novel Distributed Vibration Sensor Based on Fading Noise Reduction in Multi-Mode Fiber |
| title_sort | novel distributed vibration sensor based on fading noise reduction in multi mode fiber |
| topic | optical fiber sensor vibration location multi-mode fiber |
| url | https://www.mdpi.com/1424-8220/22/20/8028 |
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