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Liu D, Huang Z, Wu Q, Yan L, Tian K, Shen C, Farrell G, Semenova Y, Wang P. Construction of multiple anti-resonant light guidance mechanisms in a hollow-core fiber structure for simultaneous measurement of multiple parameters. OPTICS LETTERS 2022; 47:4849-4852. [PMID: 36181133 DOI: 10.1364/ol.468787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 08/19/2022] [Indexed: 06/16/2023]
Abstract
The construction of multiple light guidance mechanisms in a hollow-core fiber (HCF) structure is a popular way to realize the simultaneous measurement of multiple parameters. In this work, a partial coating method to excite multiple anti-resonant light guidance mechanisms (ARLGMs) in an HCF structure for the simultaneous measurement of multiple parameters is proposed. As an example, a double ARLGM based on a partially polyimide (PI)-coated HCF structure for the simultaneous measurement of relative humidity (RH) and temperature is demonstrated theoretically and experimentally. The dip (dip II) produced by the PI-coated HCF section shifts linearly with surrounding RH changes with a sensitivity of circa 58.6 ± 0.77 pm/%RH, while the dip (dip I) produced by the bare HCF section (with an air coating layer) is insensitive to RH changes. In addition, both types of dips have linear responses to temperature variations, with similar sensitivities of ∼ 17 pm/°C. Hence, the proposed sensor structure can be used as an RH sensor that is also capable of compensating for local temperature fluctuations. More importantly, the simultaneous measurement of multiple parameters (such as biomarkers) is possible using the proposed method provided the proper sensing materials are partially coated onto the HCF surface.
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Zhao X, Yao N, Zhang X, Zhang L, Tao G, Li Z, Liu Q, Zhao X, Xu Y. Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber. MATERIALS 2022; 15:ma15113834. [PMID: 35683134 PMCID: PMC9181228 DOI: 10.3390/ma15113834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/18/2022] [Accepted: 05/24/2022] [Indexed: 12/10/2022]
Abstract
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 (Rw), taper length (Lt), waist deformation) on the mode distribution, light transmittance (T), evanescent proportion (TO) and evanescent efficiency (τ) 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 LP11-like mode becomes higher or Rw becomes smaller. Furthermore, the radius of the waist boundary (RL) was introduced to analyze the waist deformation. Mode proportion is almost unchanged as the RL increases, while τ 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.
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Affiliation(s)
- Xudong Zhao
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
| | - Ni Yao
- Research Center for Intelligent Sensing, Zhejiang Laboratory, Hangzhou 311121, China;
- Correspondence: (N.Y.); (Y.X.)
| | - Xianghua Zhang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
- Laboratoire des Verres et Céramiques, UMR-CNRS 6226, Sciences Chimiques de Rennes, Université de Rennes 1, 35042 Rennes, France
| | - Lei Zhang
- Research Center for Intelligent Sensing, Zhejiang Laboratory, Hangzhou 311121, China;
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Guangming Tao
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China;
| | - Zijian Li
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
| | - Quan Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
| | - Xiujian Zhao
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
| | - Yinsheng Xu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
- Correspondence: (N.Y.); (Y.X.)
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Rao X, Zhao L, Xu L, Wang Y, Liu K, Wang Y, Chen GY, Liu T, Wang Y. Review of Optical Humidity Sensors. SENSORS 2021; 21:s21238049. [PMID: 34884052 PMCID: PMC8659510 DOI: 10.3390/s21238049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 11/24/2021] [Accepted: 11/27/2021] [Indexed: 11/16/2022]
Abstract
Optical humidity sensors have evolved through decades of research and development, constantly adapting to new demands and challenges. The continuous growth is supported by the emergence of a variety of optical fibers and functional materials, in addition to the adaptation of different sensing mechanisms and optical techniques. This review attempts to cover the majority of optical humidity sensors reported to date, highlight trends in design and performance, and discuss the challenges of different applications.
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Affiliation(s)
- Xing Rao
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/GuangDong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (X.R.); (L.X.); (Y.W.); (K.L.); (Y.W.); (Y.W.)
- Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, Shenzhen University, Shenzhen 518060, China
| | - Lin Zhao
- Laser Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (L.Z.); (T.L.)
| | - Lukui Xu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/GuangDong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (X.R.); (L.X.); (Y.W.); (K.L.); (Y.W.); (Y.W.)
- Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, Shenzhen University, Shenzhen 518060, China
| | - Yuhang Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/GuangDong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (X.R.); (L.X.); (Y.W.); (K.L.); (Y.W.); (Y.W.)
- Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, Shenzhen University, Shenzhen 518060, China
| | - Kuan Liu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/GuangDong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (X.R.); (L.X.); (Y.W.); (K.L.); (Y.W.); (Y.W.)
- Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, Shenzhen University, Shenzhen 518060, China
| | - Ying Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/GuangDong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (X.R.); (L.X.); (Y.W.); (K.L.); (Y.W.); (Y.W.)
- Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, Shenzhen University, Shenzhen 518060, China
| | - George Y. Chen
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/GuangDong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (X.R.); (L.X.); (Y.W.); (K.L.); (Y.W.); (Y.W.)
- Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, Shenzhen University, Shenzhen 518060, China
- Correspondence:
| | - Tongyu Liu
- Laser Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (L.Z.); (T.L.)
| | - Yiping Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education/GuangDong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (X.R.); (L.X.); (Y.W.); (K.L.); (Y.W.); (Y.W.)
- Shenzhen Key Laboratory of Photonic Devices and Sensing Systems for Internet of Things, Guangdong and Hong Kong Joint Research Centre for Optical Fibre Sensors, Shenzhen University, Shenzhen 518060, China
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