Fiber Optic Micro-Hole Salinity Sensor Based on Femtosecond Laser Processing
This study presents a novel reflective fiber Fabry–Perot (F–P) salinity sensor. The sensor employs a femtosecond laser to fabricate an open liquid cavity, facilitating the unobstructed ingress and egress of the liquid, thereby enabling the direct involvement of the liquid in light transmission. Vari...
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| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/1/60 |
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| author | Chen Li Chao Fan Hao Wu Xxx Sedao Jiang Wang |
| author_facet | Chen Li Chao Fan Hao Wu Xxx Sedao Jiang Wang |
| author_sort | Chen Li |
| collection | DOAJ |
| description | This study presents a novel reflective fiber Fabry–Perot (F–P) salinity sensor. The sensor employs a femtosecond laser to fabricate an open liquid cavity, facilitating the unobstructed ingress and egress of the liquid, thereby enabling the direct involvement of the liquid in light transmission. Variations in the refractive index of the liquid induce corresponding changes in the effective refractive index of the optical path, which subsequently influences the output spectrum. The dimensions and quality of the optical fiber are meticulously regulated through a combination of femtosecond laser cutting and chemical polishing, significantly enhancing the mechanical strength and sensitivity of the sensor’s overall structure. Experimental results indicate that the sensor achieves salinity sensitivity of 0.288 nm/% within a salinity range of 0% to 25%. Furthermore, the temperature sensitivity is measured at a minimal 0.015 nm/°C, allowing us to neglect temperature effects. The device is characterized by its compact size, straightforward structure, high mechanical robustness, ease of production, and excellent reproducibility. It demonstrates considerable potential for sensing applications in the domains of biomedicine and chemical engineering. |
| format | Article |
| id | doaj-art-a22ff45f94f846149572f9cd8aa63d63 |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-a22ff45f94f846149572f9cd8aa63d632025-01-10T13:19:23ZengMDPI AGNanomaterials2079-49912025-01-011516010.3390/nano15010060Fiber Optic Micro-Hole Salinity Sensor Based on Femtosecond Laser ProcessingChen Li0Chao Fan1Hao Wu2Xxx Sedao3Jiang Wang4College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaCollege of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaCollege of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, ChinaLaboratoire Hubert Curien, UMR CNRS 5516, Université de Lyon, 92 Rue Pasteur, CS 30122, 69361 Lyon Cedex 07, FranceSchool of Artificial Intelligence, Optics and Electronics (iOPEN), Northwestern Polytechnical University, Xi’an 710072, ChinaThis study presents a novel reflective fiber Fabry–Perot (F–P) salinity sensor. The sensor employs a femtosecond laser to fabricate an open liquid cavity, facilitating the unobstructed ingress and egress of the liquid, thereby enabling the direct involvement of the liquid in light transmission. Variations in the refractive index of the liquid induce corresponding changes in the effective refractive index of the optical path, which subsequently influences the output spectrum. The dimensions and quality of the optical fiber are meticulously regulated through a combination of femtosecond laser cutting and chemical polishing, significantly enhancing the mechanical strength and sensitivity of the sensor’s overall structure. Experimental results indicate that the sensor achieves salinity sensitivity of 0.288 nm/% within a salinity range of 0% to 25%. Furthermore, the temperature sensitivity is measured at a minimal 0.015 nm/°C, allowing us to neglect temperature effects. The device is characterized by its compact size, straightforward structure, high mechanical robustness, ease of production, and excellent reproducibility. It demonstrates considerable potential for sensing applications in the domains of biomedicine and chemical engineering.https://www.mdpi.com/2079-4991/15/1/60femtosecond laserFabry–Perotmicro-hole |
| spellingShingle | Chen Li Chao Fan Hao Wu Xxx Sedao Jiang Wang Fiber Optic Micro-Hole Salinity Sensor Based on Femtosecond Laser Processing Nanomaterials femtosecond laser Fabry–Perot micro-hole |
| title | Fiber Optic Micro-Hole Salinity Sensor Based on Femtosecond Laser Processing |
| title_full | Fiber Optic Micro-Hole Salinity Sensor Based on Femtosecond Laser Processing |
| title_fullStr | Fiber Optic Micro-Hole Salinity Sensor Based on Femtosecond Laser Processing |
| title_full_unstemmed | Fiber Optic Micro-Hole Salinity Sensor Based on Femtosecond Laser Processing |
| title_short | Fiber Optic Micro-Hole Salinity Sensor Based on Femtosecond Laser Processing |
| title_sort | fiber optic micro hole salinity sensor based on femtosecond laser processing |
| topic | femtosecond laser Fabry–Perot micro-hole |
| url | https://www.mdpi.com/2079-4991/15/1/60 |
| work_keys_str_mv | AT chenli fiberopticmicroholesalinitysensorbasedonfemtosecondlaserprocessing AT chaofan fiberopticmicroholesalinitysensorbasedonfemtosecondlaserprocessing AT haowu fiberopticmicroholesalinitysensorbasedonfemtosecondlaserprocessing AT xxxsedao fiberopticmicroholesalinitysensorbasedonfemtosecondlaserprocessing AT jiangwang fiberopticmicroholesalinitysensorbasedonfemtosecondlaserprocessing |