A Taper-in-Taper Structured Interferometric Optical Fiber Sensor for Cu<sup>2+</sup> ion Detection
Copper ion is closely associated with the ecosystem and human health, and even a little excessive dose in drinking water may result in a range of health problems. However, it remains challenging to produce a highly sensitive, reliable, cost-effective and electromagnetic-interference interference-imm...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/7/2709 |
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| author | Zidan Gong Yisong Lei Ziwen Wang Jie Zhang Zeji Sun Yuyao Li Jianhao Huang Chichiu Chan Xia Ouyang |
| author_facet | Zidan Gong Yisong Lei Ziwen Wang Jie Zhang Zeji Sun Yuyao Li Jianhao Huang Chichiu Chan Xia Ouyang |
| author_sort | Zidan Gong |
| collection | DOAJ |
| description | Copper ion is closely associated with the ecosystem and human health, and even a little excessive dose in drinking water may result in a range of health problems. However, it remains challenging to produce a highly sensitive, reliable, cost-effective and electromagnetic-interference interference-immune device to detect Cu<sup>2+</sup> ion in drinking water. In this paper, a taper-in-taper fiber sensor was fabricated with high sensitivity by mode-mode interference and deposited polyelectrolyte layers for Cu<sup>2+</sup> detection. We propose a new structure which forms a secondary taper in the middle of the single-mode fiber through two-arc discharge. Experimental results show that the newly developed fiber sensor possesses a sensitivity of 2741 nm/RIU in refractive index (RI), exhibits 3.7 times sensitivity enhancement when compared with traditional tapered fiber sensors. To apply this sensor in copper ions detection, the results present that when the concentration of Cu<sup>2+</sup> is 0–0.1 mM, the sensitivity could reach 78.03 nm/mM. The taper-in-taper fiber sensor exhibits high sensitivity with good stability and mechanical strength which has great potential to be applied in the detection of low Cu<sup>2+</sup> ions in some specific environments such as drinking water. |
| first_indexed | 2024-03-09T11:26:04Z |
| format | Article |
| id | doaj.art-ef27caab86584a2cb23b8c24930efe5d |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T11:26:04Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ef27caab86584a2cb23b8c24930efe5d2023-12-01T00:03:59ZengMDPI AGSensors1424-82202022-04-01227270910.3390/s22072709A Taper-in-Taper Structured Interferometric Optical Fiber Sensor for Cu<sup>2+</sup> ion DetectionZidan Gong0Yisong Lei1Ziwen Wang2Jie Zhang3Zeji Sun4Yuyao Li5Jianhao Huang6Chichiu Chan7Xia Ouyang8Sino German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, ChinaSino German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, ChinaSino German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, ChinaSino German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, ChinaSino German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, ChinaSino German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, ChinaSino German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, ChinaCenter for Smart Sensing System, Julong College, Shenzhen Technology University, Shenzhen 518118, ChinaSino German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, ChinaCopper ion is closely associated with the ecosystem and human health, and even a little excessive dose in drinking water may result in a range of health problems. However, it remains challenging to produce a highly sensitive, reliable, cost-effective and electromagnetic-interference interference-immune device to detect Cu<sup>2+</sup> ion in drinking water. In this paper, a taper-in-taper fiber sensor was fabricated with high sensitivity by mode-mode interference and deposited polyelectrolyte layers for Cu<sup>2+</sup> detection. We propose a new structure which forms a secondary taper in the middle of the single-mode fiber through two-arc discharge. Experimental results show that the newly developed fiber sensor possesses a sensitivity of 2741 nm/RIU in refractive index (RI), exhibits 3.7 times sensitivity enhancement when compared with traditional tapered fiber sensors. To apply this sensor in copper ions detection, the results present that when the concentration of Cu<sup>2+</sup> is 0–0.1 mM, the sensitivity could reach 78.03 nm/mM. The taper-in-taper fiber sensor exhibits high sensitivity with good stability and mechanical strength which has great potential to be applied in the detection of low Cu<sup>2+</sup> ions in some specific environments such as drinking water.https://www.mdpi.com/1424-8220/22/7/2709optical fiber sensorinterferometrictaper-in-taperrefractive indexCu<sup>2+</sup> detection |
| spellingShingle | Zidan Gong Yisong Lei Ziwen Wang Jie Zhang Zeji Sun Yuyao Li Jianhao Huang Chichiu Chan Xia Ouyang A Taper-in-Taper Structured Interferometric Optical Fiber Sensor for Cu<sup>2+</sup> ion Detection Sensors optical fiber sensor interferometric taper-in-taper refractive index Cu<sup>2+</sup> detection |
| title | A Taper-in-Taper Structured Interferometric Optical Fiber Sensor for Cu<sup>2+</sup> ion Detection |
| title_full | A Taper-in-Taper Structured Interferometric Optical Fiber Sensor for Cu<sup>2+</sup> ion Detection |
| title_fullStr | A Taper-in-Taper Structured Interferometric Optical Fiber Sensor for Cu<sup>2+</sup> ion Detection |
| title_full_unstemmed | A Taper-in-Taper Structured Interferometric Optical Fiber Sensor for Cu<sup>2+</sup> ion Detection |
| title_short | A Taper-in-Taper Structured Interferometric Optical Fiber Sensor for Cu<sup>2+</sup> ion Detection |
| title_sort | taper in taper structured interferometric optical fiber sensor for cu sup 2 sup ion detection |
| topic | optical fiber sensor interferometric taper-in-taper refractive index Cu<sup>2+</sup> detection |
| url | https://www.mdpi.com/1424-8220/22/7/2709 |
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