In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration Sensitivity
A simple vibration sensor is proposed and demonstrated based on an optical fiber Fabry-Perot interferometer (FPI) with an in-fiber collimator. The device was fabricated by splicing a quarter-pitch graded index fiber (GIF) with a section of a hollow-core fiber (HCF) interposed between single mode fib...
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| Format: | Article |
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MDPI AG
2019-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/19/2/435 |
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| author | Bin Du Xizhen Xu Jun He Kuikui Guo Wei Huang Fengchan Zhang Min Zhang Yiping Wang |
| author_facet | Bin Du Xizhen Xu Jun He Kuikui Guo Wei Huang Fengchan Zhang Min Zhang Yiping Wang |
| author_sort | Bin Du |
| collection | DOAJ |
| description | A simple vibration sensor is proposed and demonstrated based on an optical fiber Fabry-Perot interferometer (FPI) with an in-fiber collimator. The device was fabricated by splicing a quarter-pitch graded index fiber (GIF) with a section of a hollow-core fiber (HCF) interposed between single mode fibers (SMFs). The static displacement sensitivity of the FPI with an in-fiber collimator was 5.17 × 10<sup>−4</sup> μm<sup>−1</sup>, whereas the maximum static displacement sensitivity of the device without collimator was 1.73 × 10<sup>−4</sup> μm<sup>−1</sup>. Moreover, the vibration sensitivity of the FPI with the collimator was 60.22 mV/g at 100 Hz, which was significantly higher than the sensitivity of the FPI without collimator (11.09 mV/g at 100 Hz). The proposed FPI with an in-fiber collimator also exhibited a vibration sensitivity nearly one order of magnitude higher than the device without the collimator at frequencies ranging from 40 to 200 Hz. This low-cost FPI sensor is highly-sensitive, robust and easy to fabricate. It could potentially be used for vibration monitoring in remote and harsh environments. |
| first_indexed | 2024-04-11T22:03:22Z |
| format | Article |
| id | doaj.art-98d7162b4aef42da9e67b29d574f571b |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:03:22Z |
| publishDate | 2019-01-01 |
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| series | Sensors |
| spelling | doaj.art-98d7162b4aef42da9e67b29d574f571b2022-12-22T04:00:49ZengMDPI AGSensors1424-82202019-01-0119243510.3390/s19020435s19020435In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration SensitivityBin Du0Xizhen Xu1Jun He2Kuikui Guo3Wei Huang4Fengchan Zhang5Min Zhang6Yiping Wang7Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaA simple vibration sensor is proposed and demonstrated based on an optical fiber Fabry-Perot interferometer (FPI) with an in-fiber collimator. The device was fabricated by splicing a quarter-pitch graded index fiber (GIF) with a section of a hollow-core fiber (HCF) interposed between single mode fibers (SMFs). The static displacement sensitivity of the FPI with an in-fiber collimator was 5.17 × 10<sup>−4</sup> μm<sup>−1</sup>, whereas the maximum static displacement sensitivity of the device without collimator was 1.73 × 10<sup>−4</sup> μm<sup>−1</sup>. Moreover, the vibration sensitivity of the FPI with the collimator was 60.22 mV/g at 100 Hz, which was significantly higher than the sensitivity of the FPI without collimator (11.09 mV/g at 100 Hz). The proposed FPI with an in-fiber collimator also exhibited a vibration sensitivity nearly one order of magnitude higher than the device without the collimator at frequencies ranging from 40 to 200 Hz. This low-cost FPI sensor is highly-sensitive, robust and easy to fabricate. It could potentially be used for vibration monitoring in remote and harsh environments.https://www.mdpi.com/1424-8220/19/2/435fiber vibration sensorgraded index fiberFabry-Perot interferometer |
| spellingShingle | Bin Du Xizhen Xu Jun He Kuikui Guo Wei Huang Fengchan Zhang Min Zhang Yiping Wang In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration Sensitivity Sensors fiber vibration sensor graded index fiber Fabry-Perot interferometer |
| title | In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration Sensitivity |
| title_full | In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration Sensitivity |
| title_fullStr | In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration Sensitivity |
| title_full_unstemmed | In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration Sensitivity |
| title_short | In-Fiber Collimator-Based Fabry-Perot Interferometer with Enhanced Vibration Sensitivity |
| title_sort | in fiber collimator based fabry perot interferometer with enhanced vibration sensitivity |
| topic | fiber vibration sensor graded index fiber Fabry-Perot interferometer |
| url | https://www.mdpi.com/1424-8220/19/2/435 |
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