Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber
Evanescent wave absorption-based mid-infrared chalcogenide fiber sensors have prominent advantages in multicomponent liquid and gas detection. In this work, a new approach of tapered-fiber geometry optimization was proposed, and the evanescent efficiency was also theoretically calculated to evaluate...
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MDPI AG
2022-05-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/11/3834 |
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| author | Xudong Zhao Ni Yao Xianghua Zhang Lei Zhang Guangming Tao Zijian Li Quan Liu Xiujian Zhao Yinsheng Xu |
| author_facet | Xudong Zhao Ni Yao Xianghua Zhang Lei Zhang Guangming Tao Zijian Li Quan Liu Xiujian Zhao Yinsheng Xu |
| author_sort | Xudong Zhao |
| collection | DOAJ |
| description | Evanescent wave absorption-based mid-infrared chalcogenide fiber sensors have prominent advantages in multicomponent liquid and gas detection. In this work, a new approach of tapered-fiber geometry optimization was proposed, and the evanescent efficiency was also theoretically calculated to evaluate sensing performance. The influence of fiber geometry (waist radius (<i>R</i><sub>w</sub>), taper length (<i>L</i><sub>t</sub>), waist deformation) on the mode distribution, light transmittance (<i>T</i>), evanescent proportion (<i>T</i><sub>O</sub>) and evanescent efficiency (<i>τ</i>) is discussed. Remarkably, the calculated results show that the evanescent efficiency can be over 10% via optimizing the waist radius and taper length. Generally, a better sensing performance based on tapered fiber can be achieved if the proportion of the <i>LP</i><sub>11</sub>-like mode becomes higher or <i>R</i><sub>w</sub> becomes smaller. Furthermore, the radius of the waist boundary (<i>R</i><sub>L</sub>) was introduced to analyze the waist deformation. Mode proportion is almost unchanged as the <i>R</i><sub>L</sub> increases, while <i>τ</i> is halved. In addition, the larger the micro taper is, the easier the taper process is. Herein, a longer waist can be obtained, resulting in larger sensing area which increases sensitivity greatly. |
| first_indexed | 2024-03-10T01:09:49Z |
| format | Article |
| id | doaj.art-e89e941e2f6345c9882b02228ed07ed9 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:09:49Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e89e941e2f6345c9882b02228ed07ed92023-11-23T14:21:03ZengMDPI AGMaterials1996-19442022-05-011511383410.3390/ma15113834Optimizing Evanescent Efficiency of Chalcogenide Tapered FiberXudong Zhao0Ni Yao1Xianghua Zhang2Lei Zhang3Guangming Tao4Zijian Li5Quan Liu6Xiujian Zhao7Yinsheng Xu8State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, ChinaResearch Center for Intelligent Sensing, Zhejiang Laboratory, Hangzhou 311121, ChinaState Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, ChinaResearch Center for Intelligent Sensing, Zhejiang Laboratory, Hangzhou 311121, ChinaWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, ChinaState Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, ChinaEvanescent wave absorption-based mid-infrared chalcogenide fiber sensors have prominent advantages in multicomponent liquid and gas detection. In this work, a new approach of tapered-fiber geometry optimization was proposed, and the evanescent efficiency was also theoretically calculated to evaluate sensing performance. The influence of fiber geometry (waist radius (<i>R</i><sub>w</sub>), taper length (<i>L</i><sub>t</sub>), waist deformation) on the mode distribution, light transmittance (<i>T</i>), evanescent proportion (<i>T</i><sub>O</sub>) and evanescent efficiency (<i>τ</i>) is discussed. Remarkably, the calculated results show that the evanescent efficiency can be over 10% via optimizing the waist radius and taper length. Generally, a better sensing performance based on tapered fiber can be achieved if the proportion of the <i>LP</i><sub>11</sub>-like mode becomes higher or <i>R</i><sub>w</sub> becomes smaller. Furthermore, the radius of the waist boundary (<i>R</i><sub>L</sub>) was introduced to analyze the waist deformation. Mode proportion is almost unchanged as the <i>R</i><sub>L</sub> increases, while <i>τ</i> is halved. In addition, the larger the micro taper is, the easier the taper process is. Herein, a longer waist can be obtained, resulting in larger sensing area which increases sensitivity greatly.https://www.mdpi.com/1996-1944/15/11/3834evanescent wavetapered fibersensorevanescent wave efficiency |
| spellingShingle | Xudong Zhao Ni Yao Xianghua Zhang Lei Zhang Guangming Tao Zijian Li Quan Liu Xiujian Zhao Yinsheng Xu Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber Materials evanescent wave tapered fiber sensor evanescent wave efficiency |
| title | Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber |
| title_full | Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber |
| title_fullStr | Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber |
| title_full_unstemmed | Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber |
| title_short | Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber |
| title_sort | optimizing evanescent efficiency of chalcogenide tapered fiber |
| topic | evanescent wave tapered fiber sensor evanescent wave efficiency |
| url | https://www.mdpi.com/1996-1944/15/11/3834 |
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