Sensitivity and linearity enhanced wide-detection range surface-plasmon-resonance photonic-crystal-fiber sensor

Dehuai Xie; Haiwei Zhang; Guangyao Wang; Lifang Xue; Xiaoping Yang; Wei Shi; Jianquan Yao

Results in Physics (Oct 2021)

Sensitivity and linearity enhanced wide-detection range surface-plasmon-resonance photonic-crystal-fiber sensor

Dehuai Xie,
Haiwei Zhang,
Guangyao Wang,
Lifang Xue,
Xiaoping Yang,
Wei Shi,
Jianquan Yao

Affiliations

Dehuai Xie: Engineering Research Center of Optoelectronic Devices and Communication Technology (Ministry of Education), Tianjin Key Laboratory of Film Electronic and Communication Device, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin 300384, China
Haiwei Zhang: Engineering Research Center of Optoelectronic Devices and Communication Technology (Ministry of Education), Tianjin Key Laboratory of Film Electronic and Communication Device, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin 300384, China; Corresponding authors.
Guangyao Wang: Institute of Laser and Optoelectronics, Key Laboratory of Optoelectronics Information Science and Technology (Ministry of Education), School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
Lifang Xue: Engineering Research Center of Optoelectronic Devices and Communication Technology (Ministry of Education), Tianjin Key Laboratory of Film Electronic and Communication Device, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin 300384, China; Corresponding authors.
Xiaoping Yang: Engineering Research Center of Optoelectronic Devices and Communication Technology (Ministry of Education), Tianjin Key Laboratory of Film Electronic and Communication Device, School of Electrical and Electronic Engineering, Tianjin University of Technology, Tianjin 300384, China
Wei Shi: Institute of Laser and Optoelectronics, Key Laboratory of Optoelectronics Information Science and Technology (Ministry of Education), School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China
Jianquan Yao: Institute of Laser and Optoelectronics, Key Laboratory of Optoelectronics Information Science and Technology (Ministry of Education), School of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China

Journal volume & issue: Vol. 29
p. 104707

Abstract

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A refractive-index (RI) sensor based on photonic crystal fiber (PCF) and surface plasmon resonance (SPR) is proposed and demonstrated in this paper. The influences induced by the changes of the diameter of gold nanowire, air-hole spacing, diameter of central hole and diameter of the air hole on both sides of central hole are investigated to analyze and optimize the performances of the SPR-PCF sensor. It is indicated that the proposed sensor is suitable for the detection of the RI of material in the range from 1.15 to 1.45. Moreover, the optimized RI sensitivity can reach −5893.9 nm/RIU and the optimized R2 can be larger than 0.999. Detections of the alcohol with different concentrations are carried out to demonstrate the performance of the SPR-PCF. The sensitivities in both polarization directions are −192 nm/% and −198 nm/% when the concentration is changed from 10% to 87%. Moreover, the sensitivities for RI-detection are −5900 nm/RIU and −6116 nm/RIU with the corresponding R2 larger than 0.9993 in both polarization-directions. Our detailed results will help to understand the SPR phenomenon in hexagonal PCF, and promote the realization and application of SPR-PCF sensors.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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