Graphene coated micro-channel fiber sensor based on localized surface plasmon resonance

Jingao Zhang, Jinhui Yuan*, Yuwei Qu, Shi Qiu, Chao Mei, Xian Zhou, Binbin Yan, Qiang Wu*, Kuiru Wang, Xinzhu Sang, Chongxiu Yu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In this paper, a novel localized surface plasmon resonance (LSPR)-based micro-channel photonic crystal fiber (PCF) sensor is proposed. The LSPR-PCF sensor is designed with the three micro-channels, and the metal nanostraps and graphene are coated onto the PCF as the sensing elements. To realize high refractive index (RI) sensitivity, the influence of different plasmon materials, structure parameters, and graphene layers on the sensing performance of the LSPR-PCF sensor is investigated. The maximum wavelength sensitivity and amplitude sensitivity of the optimized LSPR-PCF sensor are up to 45800 nm/RIU and 1818RIU−1, respectively, when the RI changes from 1.35 to 1.42. Furthermore, the proposed LSPR-PCF sensor achieves the maximum figure of merit of 594.8, alone with a resolution of 2.18×10−6RIU. Because of its simple structure and excellent sensing performance, the proposed LSPR-PCF sensor has potential applications in biochemistry and environmental science.
Original languageEnglish
Pages (from-to)695-704
Number of pages1
JournalJournal of the Optical Society of America B
Volume40
Issue number4
Early online date8 Mar 2023
DOIs
Publication statusPublished - 1 Apr 2023

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