Hybrid Fiber-Optic Sensing Integrating Brillouin Optical Time-Domain Analysis and Fiber Bragg Grating for Long-Range Two-Parameter Measurement
Distributed fiber sensing (DFS) can provide real-time signals and warnings. The entire length of fiber optic cable can act as a sensing element, but the accuracy is sometimes limited. On the other hand, point-to-point fiber sensing (PPFS) is usually implemented using one or more fiber Bragg gratings...
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| Format: | Article |
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MDPI AG
2021-06-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/12/4224 |
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| author | Shien-Kuei Liaw Chi-Wen Liao Meng-Hsuan Tsai Dong-Chang Li Shu-Ming Yang Zhu-Yong Xia Chien-Hung Yeh Wen-Fung Liu |
| author_facet | Shien-Kuei Liaw Chi-Wen Liao Meng-Hsuan Tsai Dong-Chang Li Shu-Ming Yang Zhu-Yong Xia Chien-Hung Yeh Wen-Fung Liu |
| author_sort | Shien-Kuei Liaw |
| collection | DOAJ |
| description | Distributed fiber sensing (DFS) can provide real-time signals and warnings. The entire length of fiber optic cable can act as a sensing element, but the accuracy is sometimes limited. On the other hand, point-to-point fiber sensing (PPFS) is usually implemented using one or more fiber Bragg gratings (FBGs) at specific positions along with the fiber for the monitoring of specific parameters (temperature, strain, pressure, and so on). However, the cost becomes expensive when the number of FBGs increases. A hybrid fiber sensing scheme is thus proposed, combining the advantages of DFS and PPFS. It is based on a Brillouin optical time-domain analysis (BOTDA) fiber system with additional FBGs embedded at certain positions where it is necessary to detect specific parameters. The hybrid fiber sensing system has the advantages of full sensing coverage at essential locations that need to be carefully monitored. In our work, the test results showed that the proposed system could achieve a sensing distance of 16 km with the single-mode fiber with a 2 m spatial resolution. For FBG parameter measurements, the temperature variation was 52 °C, from 25 °C to 77 °C, with a temperature sensitivity of 23 pm/°C, and the strain was from 0 to 400 µε, with a strain sensitivity of 0.975 pm/µε, respectively, using two FBGs. |
| first_indexed | 2024-03-10T10:14:18Z |
| format | Article |
| id | doaj.art-0c6e2f6c0bb6478f838931d0527badc7 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T10:14:18Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0c6e2f6c0bb6478f838931d0527badc72023-11-22T00:56:23ZengMDPI AGSensors1424-82202021-06-012112422410.3390/s21124224Hybrid Fiber-Optic Sensing Integrating Brillouin Optical Time-Domain Analysis and Fiber Bragg Grating for Long-Range Two-Parameter MeasurementShien-Kuei Liaw0Chi-Wen Liao1Meng-Hsuan Tsai2Dong-Chang Li3Shu-Ming Yang4Zhu-Yong Xia5Chien-Hung Yeh6Wen-Fung Liu7Department of Electronics and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10671, TaiwanEnergy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu 31048, TaiwanDepartment of Electronics and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10671, TaiwanDepartment of Electronics and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10671, TaiwanDepartment of Electronics and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10671, TaiwanDepartment of Electronics and Computer Engineering, National Taiwan University of Science and Technology, Taipei 10671, TaiwanDepartment of Photonics, Feng Chia University, Taichung 40724, TaiwanDepartment of Photonics, Feng Chia University, Taichung 40724, TaiwanDistributed fiber sensing (DFS) can provide real-time signals and warnings. The entire length of fiber optic cable can act as a sensing element, but the accuracy is sometimes limited. On the other hand, point-to-point fiber sensing (PPFS) is usually implemented using one or more fiber Bragg gratings (FBGs) at specific positions along with the fiber for the monitoring of specific parameters (temperature, strain, pressure, and so on). However, the cost becomes expensive when the number of FBGs increases. A hybrid fiber sensing scheme is thus proposed, combining the advantages of DFS and PPFS. It is based on a Brillouin optical time-domain analysis (BOTDA) fiber system with additional FBGs embedded at certain positions where it is necessary to detect specific parameters. The hybrid fiber sensing system has the advantages of full sensing coverage at essential locations that need to be carefully monitored. In our work, the test results showed that the proposed system could achieve a sensing distance of 16 km with the single-mode fiber with a 2 m spatial resolution. For FBG parameter measurements, the temperature variation was 52 °C, from 25 °C to 77 °C, with a temperature sensitivity of 23 pm/°C, and the strain was from 0 to 400 µε, with a strain sensitivity of 0.975 pm/µε, respectively, using two FBGs.https://www.mdpi.com/1424-8220/21/12/4224Brillouin optical time-domain analysisfiber Bragg gratingdistributed fiber sensingpoint to pointhybrid sensing |
| spellingShingle | Shien-Kuei Liaw Chi-Wen Liao Meng-Hsuan Tsai Dong-Chang Li Shu-Ming Yang Zhu-Yong Xia Chien-Hung Yeh Wen-Fung Liu Hybrid Fiber-Optic Sensing Integrating Brillouin Optical Time-Domain Analysis and Fiber Bragg Grating for Long-Range Two-Parameter Measurement Sensors Brillouin optical time-domain analysis fiber Bragg grating distributed fiber sensing point to point hybrid sensing |
| title | Hybrid Fiber-Optic Sensing Integrating Brillouin Optical Time-Domain Analysis and Fiber Bragg Grating for Long-Range Two-Parameter Measurement |
| title_full | Hybrid Fiber-Optic Sensing Integrating Brillouin Optical Time-Domain Analysis and Fiber Bragg Grating for Long-Range Two-Parameter Measurement |
| title_fullStr | Hybrid Fiber-Optic Sensing Integrating Brillouin Optical Time-Domain Analysis and Fiber Bragg Grating for Long-Range Two-Parameter Measurement |
| title_full_unstemmed | Hybrid Fiber-Optic Sensing Integrating Brillouin Optical Time-Domain Analysis and Fiber Bragg Grating for Long-Range Two-Parameter Measurement |
| title_short | Hybrid Fiber-Optic Sensing Integrating Brillouin Optical Time-Domain Analysis and Fiber Bragg Grating for Long-Range Two-Parameter Measurement |
| title_sort | hybrid fiber optic sensing integrating brillouin optical time domain analysis and fiber bragg grating for long range two parameter measurement |
| topic | Brillouin optical time-domain analysis fiber Bragg grating distributed fiber sensing point to point hybrid sensing |
| url | https://www.mdpi.com/1424-8220/21/12/4224 |
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