Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain
Negative curvature hollow core fiber (NCHCF) is a promising candidate for sensing applications; however, research on NCHCF based fiber sensors starts only in the recent two years. In this work, an all-fiber interferometer based on an NCHCF structure is proposed for the first time. The interferometer...
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MDPI AG
2020-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/17/4763 |
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| author | Dejun Liu Wei Li Qiang Wu Haoyu Zhao Fengzi Ling Ke Tian Changyu Shen Fangfang Wei Wei Han Gerald Farrell Yuliya Semenova Pengfei Wang |
| author_facet | Dejun Liu Wei Li Qiang Wu Haoyu Zhao Fengzi Ling Ke Tian Changyu Shen Fangfang Wei Wei Han Gerald Farrell Yuliya Semenova Pengfei Wang |
| author_sort | Dejun Liu |
| collection | DOAJ |
| description | Negative curvature hollow core fiber (NCHCF) is a promising candidate for sensing applications; however, research on NCHCF based fiber sensors starts only in the recent two years. In this work, an all-fiber interferometer based on an NCHCF structure is proposed for the first time. The interferometer was fabricated by simple fusion splicing of a short section of an NCHCF between two singlemode fibers (SMFs). Both simulation and experimental results show that multiple modes and modal interferences are excited within the NCHCF structure. Periodic transmission dips with high spectral extinction ratio (up to 30 dB) and wide free spectral range (FSR) are produced, which is mainly introduced by the modes coupling between HE<sub>11</sub> and HE<sub>12</sub>. A small portion of light guiding by means of Anti-resonant reflecting optical waveguide (ARROW) mechanism is also observed. The transmission dips, resulting from multimode interferences (MMI) and ARROW effect have a big difference in sensitivities to strain and temperature, thus making it possible to monitor these two parameters with a single sensor head by using a characteristic matrix approach. In addition, the proposed sensor structure is experimentally proven to have a good reproducibility. |
| first_indexed | 2024-03-10T16:57:52Z |
| format | Article |
| id | doaj.art-401ff117100f4dce9cb4e0c7d712496e |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T16:57:52Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj.art-401ff117100f4dce9cb4e0c7d712496e2023-11-20T11:04:42ZengMDPI AGSensors1424-82202020-08-012017476310.3390/s20174763Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and StrainDejun Liu0Wei Li1Qiang Wu2Haoyu Zhao3Fengzi Ling4Ke Tian5Changyu Shen6Fangfang Wei7Wei Han8Gerald Farrell9Yuliya Semenova10Pengfei Wang11Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Laboratory of Nondestructive Test (Ministry of Education), Nanchang Hangkong University, Nanchang 330063, ChinaTechnical Center, Sichuan Changhong Electric Co., Ltd., Mianyang 621000, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaKey Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001, ChinaInstitute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, ChinaPhotonics Research Centre, Technological University Dublin, Kevin Street, Dublin 8, IrelandPhotonics Research Centre, Technological University Dublin, Kevin Street, Dublin 8, IrelandPhotonics Research Centre, Technological University Dublin, Kevin Street, Dublin 8, IrelandPhotonics Research Centre, Technological University Dublin, Kevin Street, Dublin 8, IrelandKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaNegative curvature hollow core fiber (NCHCF) is a promising candidate for sensing applications; however, research on NCHCF based fiber sensors starts only in the recent two years. In this work, an all-fiber interferometer based on an NCHCF structure is proposed for the first time. The interferometer was fabricated by simple fusion splicing of a short section of an NCHCF between two singlemode fibers (SMFs). Both simulation and experimental results show that multiple modes and modal interferences are excited within the NCHCF structure. Periodic transmission dips with high spectral extinction ratio (up to 30 dB) and wide free spectral range (FSR) are produced, which is mainly introduced by the modes coupling between HE<sub>11</sub> and HE<sub>12</sub>. A small portion of light guiding by means of Anti-resonant reflecting optical waveguide (ARROW) mechanism is also observed. The transmission dips, resulting from multimode interferences (MMI) and ARROW effect have a big difference in sensitivities to strain and temperature, thus making it possible to monitor these two parameters with a single sensor head by using a characteristic matrix approach. In addition, the proposed sensor structure is experimentally proven to have a good reproducibility.https://www.mdpi.com/1424-8220/20/17/4763fiber interferometersnegative curvature hollow core fiberoptical fiber sensorssimultaneous measurementtemperaturestrain |
| spellingShingle | Dejun Liu Wei Li Qiang Wu Haoyu Zhao Fengzi Ling Ke Tian Changyu Shen Fangfang Wei Wei Han Gerald Farrell Yuliya Semenova Pengfei Wang Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain Sensors fiber interferometers negative curvature hollow core fiber optical fiber sensors simultaneous measurement temperature strain |
| title | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
| title_full | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
| title_fullStr | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
| title_full_unstemmed | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
| title_short | Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer and Its Sensing Applications to Temperature and Strain |
| title_sort | negative curvature hollow core fiber based all fiber interferometer and its sensing applications to temperature and strain |
| topic | fiber interferometers negative curvature hollow core fiber optical fiber sensors simultaneous measurement temperature strain |
| url | https://www.mdpi.com/1424-8220/20/17/4763 |
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