Ultrahigh Resolution Multiplexed Fiber Bragg Grating Sensor for Crustal Strain Monitoring
We demonstrated a multiplexed fiber Bragg grating (FBG) sensor with static strain resolution of 10 nanostrain (nε) for crustal strain monitoring. Each sensor unit consists of a pair of identical FBGs for strain sensing and reference, respectively. A narrow linewidth tunable laser is used...
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IEEE
2012-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/6204300/ |
| _version_ | 1818618605898563584 |
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| author | Q. Liu T. Tokunaga K. Mogi H. Matsui H. F. Wang T. Kato Z. He |
| author_facet | Q. Liu T. Tokunaga K. Mogi H. Matsui H. F. Wang T. Kato Z. He |
| author_sort | Q. Liu |
| collection | DOAJ |
| description | We demonstrated a multiplexed fiber Bragg grating (FBG) sensor with static strain resolution of 10 nanostrain (nε) for crustal strain monitoring. Each sensor unit consists of a pair of identical FBGs for strain sensing and reference, respectively. A narrow linewidth tunable laser is used to interrogate the FBGs, and a cross-correlation algorithm is incorporated to demodulate the wavelength difference induced by strain. When no strain is applied, an ultrahigh wavelength precision corresponding to strain resolution of 3.3 nε was obtained, indicating the ultimate resolution of the sensor system. With a variable strain applied by a piezo-stage, strain resolution of 17.6 nε was demonstrated. When the sensor is adopted for the in situ monitoring of crustal deformation, the strain induced by oceanic tide is clearly recorded with a resolution of 10 nε, providing a potential tool for the geophysical measurements. |
| first_indexed | 2024-12-16T17:24:15Z |
| format | Article |
| id | doaj.art-134067338a49425a835e464e08669d13 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-16T17:24:15Z |
| publishDate | 2012-01-01 |
| publisher | IEEE |
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| series | IEEE Photonics Journal |
| spelling | doaj.art-134067338a49425a835e464e08669d132022-12-21T22:23:05ZengIEEEIEEE Photonics Journal1943-06552012-01-0143996100310.1109/JPHOT.2012.22012176204300Ultrahigh Resolution Multiplexed Fiber Bragg Grating Sensor for Crustal Strain MonitoringQ. Liu0T. Tokunaga1K. Mogi2H. Matsui3H. F. Wang4T. Kato5Z. He6<formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex></formula>Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, Japan<formula formulatype="inline"><tex Notation="TeX">$^{2}$</tex></formula>Department of Environment Systems , The University of Tokyo, Chiba, Japan<formula formulatype="inline"><tex Notation="TeX">$^{3}$</tex></formula>Department of Systems Innovation, The University of Tokyo, Tokyo, Japan<formula formulatype="inline"><tex Notation="TeX">$^{4}$</tex></formula>Geological Isolation Research and Development Directorate, Japan Atomic Energy Agency, Gifu, Japan<formula formulatype="inline"><tex Notation="TeX">$^{5}$</tex></formula>Department of Geoscience, University of Wisconsin-Madison, Madison, WI, USA<formula formulatype="inline"><tex Notation="TeX">$^{6}$</tex></formula>Earthquake Research Institute, The University of Tokyo, Tokyo, Japan<formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex></formula>Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, JapanWe demonstrated a multiplexed fiber Bragg grating (FBG) sensor with static strain resolution of 10 nanostrain (nε) for crustal strain monitoring. Each sensor unit consists of a pair of identical FBGs for strain sensing and reference, respectively. A narrow linewidth tunable laser is used to interrogate the FBGs, and a cross-correlation algorithm is incorporated to demodulate the wavelength difference induced by strain. When no strain is applied, an ultrahigh wavelength precision corresponding to strain resolution of 3.3 nε was obtained, indicating the ultimate resolution of the sensor system. With a variable strain applied by a piezo-stage, strain resolution of 17.6 nε was demonstrated. When the sensor is adopted for the in situ monitoring of crustal deformation, the strain induced by oceanic tide is clearly recorded with a resolution of 10 nε, providing a potential tool for the geophysical measurements.https://ieeexplore.ieee.org/document/6204300/Sensorsfiber gratings |
| spellingShingle | Q. Liu T. Tokunaga K. Mogi H. Matsui H. F. Wang T. Kato Z. He Ultrahigh Resolution Multiplexed Fiber Bragg Grating Sensor for Crustal Strain Monitoring IEEE Photonics Journal Sensors fiber gratings |
| title | Ultrahigh Resolution Multiplexed Fiber Bragg Grating Sensor for Crustal Strain Monitoring |
| title_full | Ultrahigh Resolution Multiplexed Fiber Bragg Grating Sensor for Crustal Strain Monitoring |
| title_fullStr | Ultrahigh Resolution Multiplexed Fiber Bragg Grating Sensor for Crustal Strain Monitoring |
| title_full_unstemmed | Ultrahigh Resolution Multiplexed Fiber Bragg Grating Sensor for Crustal Strain Monitoring |
| title_short | Ultrahigh Resolution Multiplexed Fiber Bragg Grating Sensor for Crustal Strain Monitoring |
| title_sort | ultrahigh resolution multiplexed fiber bragg grating sensor for crustal strain monitoring |
| topic | Sensors fiber gratings |
| url | https://ieeexplore.ieee.org/document/6204300/ |
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