High FOM PCF-SPR refractive index sensor based on MgF2-Au double-layer films

Qiang Liu; Kaiyu Wang; Xinrui Li; Wei Liu; Tingting Lv; Xueyan Zhao; Jingwei Lv; Paul K. Chu; Chao Liu

doi:10.1364/JOSAA.512121

High FOM PCF-SPR refractive index sensor based on MgF₂-Au double-layer films

Qiang Liu, Kaiyu Wang, Xinrui Li, Wei Liu, Tingting Lv, Xueyan Zhao, Jingwei Lv, Paul K. Chu, Chao Liu^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

A simple twin-core D-shape photonic crystal fiber sensor based on surface plasmon resonance (SPR) is designed for the measurement of refractive indices (RI). The twin-core D-shape structure enhances the SPR effect, and the MgF₂-Au dual-layer film narrows the linewidth in the loss spectrum, consequently improving both the sensitivity and figure of merit (FOM). The properties of the sensor are analyzed by the finite element method. In the RI range of 1.32–1.42, the maximum wavelength sensitivity, FOM, and resolution are 62,000 nm/RIU, 1281 RIU⁻¹, and 1.61 × 10⁻⁶, respectively. © 2024 Optica Publishing Group.

Original language	English
Pages (from-to)	349-354
Number of pages	6
Journal	Journal of the Optical Society of America A: Optics and Image Science, and Vision
Volume	41
Issue number	2
Online published	4 Jan 2024
DOIs	https://doi.org/10.1364/JOSAA.512121
Publication status	Published - 1 Feb 2024

Funding

Basic Research Support Project for the Excellent Youth Scholars of Heilongjiang Province, Hainan Province Science and Technology Special Fund (ZDYF2022GXJS003); Local Universities Reformation and Development Personnel Training Supporting Project from Central Authorities, Natural Science Foundation of Heilongjiang Province (Grant Number LH2021F007); China Postdoctoral Science Foundation Funded Project (Grant Number 2020M670881); City University of Hong Kong Strategic Research Grant (SRG) (Grant Number 7005505); City University of Hong Kong Donation Research Grant (Grant Number DON-RMG 9229021).

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title = "High FOM PCF-SPR refractive index sensor based on MgF2-Au double-layer films",

abstract = "A simple twin-core D-shape photonic crystal fiber sensor based on surface plasmon resonance (SPR) is designed for the measurement of refractive indices (RI). The twin-core D-shape structure enhances the SPR effect, and the MgF2-Au dual-layer film narrows the linewidth in the loss spectrum, consequently improving both the sensitivity and figure of merit (FOM). The properties of the sensor are analyzed by the finite element method. In the RI range of 1.32–1.42, the maximum wavelength sensitivity, FOM, and resolution are 62,000 nm/RIU, 1281 RIU−1, and 1.61 × 10−6, respectively. {\textcopyright} 2024 Optica Publishing Group.",

author = "Qiang Liu and Kaiyu Wang and Xinrui Li and Wei Liu and Tingting Lv and Xueyan Zhao and Jingwei Lv and Chu, {Paul K.} and Chao Liu",

year = "2024",

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day = "1",

doi = "10.1364/JOSAA.512121",

language = "English",

volume = "41",

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journal = "Journal of the Optical Society of America A: Optics and Image Science, and Vision",

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TY - JOUR

T1 - High FOM PCF-SPR refractive index sensor based on MgF2-Au double-layer films

AU - Liu, Qiang

AU - Wang, Kaiyu

AU - Li, Xinrui

AU - Liu, Wei

AU - Lv, Tingting

AU - Zhao, Xueyan

AU - Lv, Jingwei

AU - Chu, Paul K.

AU - Liu, Chao

PY - 2024/2/1

Y1 - 2024/2/1

N2 - A simple twin-core D-shape photonic crystal fiber sensor based on surface plasmon resonance (SPR) is designed for the measurement of refractive indices (RI). The twin-core D-shape structure enhances the SPR effect, and the MgF2-Au dual-layer film narrows the linewidth in the loss spectrum, consequently improving both the sensitivity and figure of merit (FOM). The properties of the sensor are analyzed by the finite element method. In the RI range of 1.32–1.42, the maximum wavelength sensitivity, FOM, and resolution are 62,000 nm/RIU, 1281 RIU−1, and 1.61 × 10−6, respectively. © 2024 Optica Publishing Group.

AB - A simple twin-core D-shape photonic crystal fiber sensor based on surface plasmon resonance (SPR) is designed for the measurement of refractive indices (RI). The twin-core D-shape structure enhances the SPR effect, and the MgF2-Au dual-layer film narrows the linewidth in the loss spectrum, consequently improving both the sensitivity and figure of merit (FOM). The properties of the sensor are analyzed by the finite element method. In the RI range of 1.32–1.42, the maximum wavelength sensitivity, FOM, and resolution are 62,000 nm/RIU, 1281 RIU−1, and 1.61 × 10−6, respectively. © 2024 Optica Publishing Group.

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85185319331&origin=recordpage

U2 - 10.1364/JOSAA.512121

DO - 10.1364/JOSAA.512121

M3 - RGC 21 - Publication in refereed journal

C2 - 38437349

SN - 1084-7529

VL - 41

SP - 349

EP - 354

JO - Journal of the Optical Society of America A: Optics and Image Science, and Vision

JF - Journal of the Optical Society of America A: Optics and Image Science, and Vision

IS - 2

ER -

High FOM PCF-SPR refractive index sensor based on MgF₂-Au double-layer films

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High FOM PCF-SPR refractive index sensor based on MgF2-Au double-layer films

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DON_RMG: Fabrication, Characterization, and Properties of Functional Materials - RMGS

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High FOM PCF-SPR refractive index sensor based on MgF₂-Au double-layer films