A novel photonic crystal fiber refractive index sensor with ultra wide detection range based on surface plasmon resonance effect

Qu, Yuwei, Yuan, Jinhui, Qiu, Shi, Zhou, Xian, Yan, Binbin, Wu, Qiang, Liu, Bin, Wang, Kuiru, Sang, Xinzhu, Long, Keping and Yu, Chongxiu (2022) A novel photonic crystal fiber refractive index sensor with ultra wide detection range based on surface plasmon resonance effect. Optik, 262. p. 169287. ISSN 0030-4026

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Official URL: https://doi.org/10.1016/j.ijleo.2022.169287

Abstract

In this paper, a novel photonic crystal fiber (PCF) refractive index (RI) sensor based on surface plasmon resonance (SPR) effect is proposed. With the full vector finite element method, the SPR-PCF RI sensor is designed, and the mode coupling effects between the X-polarization (X-pol) and Y-polarization (Y-pol) core modes and second-order surface plasmon polariton modes are analyzed. The simulation results show that the structure parameters of the proposed PCF have significant influences on the resonance wavelength drift and wavelength sensitivity (WS). Finally, in the RI range of 1.32 ~ 1.48, the average WSs of the X-pol and Y-pol core modes can reach − 4735.83 nm/RIU and − 4525.83 nm/RIU, respectively. Moreover, the maximum resolution (R) and figure of merits (FOM) of the X-pol and Y-pol core modes are 4.71 × 10−6 and 4.65 × 10−6 RIU, and 134 and 177 RIU−1, respectively. Compared with other reported results, the proposed SPR-PCF RI sensor can achieve wide detection range, high average WS, good linearity, high R, and large FOM, so it will have important applications in the fields of biochemistry, medicine, and environmental science.

Item Type: Article
Additional Information: Funding information: This work was supported in part by the National Natural Science Foundation of China (Granted No. 61875238).
Uncontrolled Keywords: Photonic crystal fiber, Refractive index sensor, Surface plasmon resonance, Wavelength sensitivity, Detection range
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: John Coen
Date Deposited: 06 Jun 2022 13:24
Last Modified: 06 Jun 2022 13:30
URI: http://nrl.northumbria.ac.uk/id/eprint/49255

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