| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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High sensitivity dual core photonic crystal fiber sensor for simultaneous detection of two samples |
| Pibin Bing(邴丕彬)1,†, Guifang Wu(武桂芳)1, Qing Liu(刘庆)1, Zhongyang Li(李忠洋)1, Lian Tan(谭联)1, Hongtao Zhang(张红涛)1, and Jianquan Yao(姚建铨)1,2 |
1 College of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China;
2 College of Precision Instrument and Opto-Electronics Engineering, Institute of Laser and Opto-Electronics, Tianjin University, Tianjin 300072, China |
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Abstract The optical control ability of photonic crystal fiber (PCF) is a distinctive property suitable for improving sensing and plasma performance. This article proposes a dual-core D-channel PCF sensor that can detect two samples simultaneously, which effectively solves the problems of coating difficulty and low wavelength sensitivity. The PCF has four layers of air holes, which dramatically reduces the optical fiber loss and is more conducive to the application of sensors in actual production. In addition, by introducing dual cores on the upper and lower sides of the central air hole, reducing the spacing between the core and the gold nanolayer, a stronger evanescent field can be generated in the cladding air hole. The optical fiber sensor can detect the refractive index of two samples simultaneously with a maximum sensitivity of 21300 nm/RIU. To the best of our knowledge, the sensitivity achieved in this work is the highest sensitivity with the dual sample synchronous detection sensors. The detection range of the refraction index is 1.35-1.41, and the resolution of the sensor is 4.695×10-6. Overall, the sensor will be suitable for medical detection, organic chemical sensing, analyte detection, and other fields.
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Received: 07 November 2021
Revised: 27 December 2021
Accepted manuscript online: 12 January 2022
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PACS:
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42.81.Pa
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(Sensors, gyros)
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07.07.Df
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(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
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71.45.Gm
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(Exchange, correlation, dielectric and magnetic response functions, plasmons)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61601183 and 31671580), the Key Technologies Research and Development Program of Henan Province, China (Grant No. 202102210390 and 222102210242), and Young Backbone Teachers in University of Henan Province, China (Grant No. 2020GGJS099). |
Corresponding Authors:
Pibin Bing
E-mail: bing463233@163.com
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Cite this article:
Pibin Bing(邴丕彬), Guifang Wu(武桂芳), Qing Liu(刘庆), Zhongyang Li(李忠洋),Lian Tan(谭联), Hongtao Zhang(张红涛), and Jianquan Yao(姚建铨) High sensitivity dual core photonic crystal fiber sensor for simultaneous detection of two samples 2022 Chin. Phys. B 31 084208
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