| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Ultra-longer fiber cantilever taper for simultaneous measurement of temperature and relative humidity |
| Min Li(李敏)1, Jiwen Yin(尹辑文)1, Weili Yan(闫伟丽)2, Aimin Cong(丛爱民)1,†, Hongjuan Li(李红娟)1, and Wenqiang Ma(马文强)1 |
1 Chifeng College, College of Physics and Intelligent Manufacturing Engineering, Chifeng 024000, China;
2 Inner Mongolia Traffic Vocational and Technical College, Chifeng 024000, China |
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Abstract An ultra-longer fiber cantilever taper for simultaneous measurement of the temperature and relative humidity (RH) with high sensitivities was proposed. The structure was fabricated by using the simple and cost-effective method only including fiber cleaving, splicing, and tapering. The length of the cantilever taper is about 1.5 mm. The dip A and dip B were measured simultaneously, owing to the ultra-long length and super-fine size, the temperature sensitivities of the dip A and dip B reached as high as 127.3 pm/℃ and 0 pm/℃ between 25 ℃ and 50 ℃, and the RH sensitivities are -31.2 pm/% RH and -29.2 pm/% RH with a broad RH interval ranging from 20% RH to 70% RH. Besides, the proposed structure showed good linearity in the sensing process and small temperature crosstalk. It will be found in wide applications in environmental monitoring, food processing, and industries.
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Received: 16 February 2021
Revised: 12 May 2021
Accepted manuscript online: 14 May 2021
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PACS:
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42.81.Pa
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(Sensors, gyros)
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92.60.hv
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(Pressure, density, and temperature)
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92.60.jk
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(Humidity)
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| Fund: Project supported by the Scientific Research Project of Institutions of Higher Learning in Inner Mongolia Autonomous Region, China (Grant No. NJZY19214), the Natural Science Foundation of Inner Mongolia Autonomous Region, China (Grant No. 2018MS05064), the Education and Teaching Research Project of Chifeng College (Grant No. JYXMY202025), the Applied Model Curriculum Construction Project of Chifeng College (Grant No. SFK20200904), and the Construction Project of the Key Laboratory of Chifeng College (Grant No. CFXYZD202007). |
Corresponding Authors:
Aimin Cong
E-mail: c15026710904@163.com
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Cite this article:
Min Li(李敏), Jiwen Yin(尹辑文), Weili Yan(闫伟丽), Aimin Cong(丛爱民), Hongjuan Li(李红娟), and Wenqiang Ma(马文强) Ultra-longer fiber cantilever taper for simultaneous measurement of temperature and relative humidity 2021 Chin. Phys. B 30 114210
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