D-shaped photonic crystal fiber sensor based on the surface plasmon resonance effect for refractive index detection

被引：6

作者：

Liu, Xiaokai ^{[1
]}

Yuan, Jinhui ^{[1
,2
,3
]}

Qu, Yuwei ^{[1
]}

Zhang, Jingao ^{[1
]}

Zhou, Xian ^{[2
,3
]}

Yan, Binbin ^{[1
]}

Wang, Kuiru ^{[1
]}

Sang, Xinzhu ^{[1
]}

Yu, Chongxiu ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

[2] Univ Sci & Technol Beijing USTB, Res Ctr Convergence Networks, Beijing 100083, Peoples R China

[3] Univ Sci & Technol Beijing USTB, Ubiquitous Serv, Beijing 100083, Peoples R China

来源：

APPLIED OPTICS | 2023年 / 62卷 / 16期

基金：

中国国家自然科学基金;

关键词：

TOPOLOGICAL STATES; RANGE; FILMS;

D O I：

10.1364/AO.485312

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this paper, a photonic crystal fiber (PCF) sensor based on the surface plasmon resonance (SPR) effect for refractive index (RI) detection is proposed. We design a D-shaped polished PCF structure consisting of air holes arranged in a hexagonal lattice. The silver film is coated on the middle channel of the polished surface of the PCF. The finite element method is used to analyze the propagation characteristics of the proposed D-shaped SPR-PCF sensor. Simulation results show that the proposed D-shaped SPR-PCF sensor has a maximum wavelength sensitivity of 30,000 nm/RIU, an average wavelength sensitivity of 6785.71 nm/RIU, and a maximum resolution of 3.33 x 10-6 RIU in the RI range of 1.22-1.36. Owing to the high wavelength sensitivity in the considered RI range, the proposed D-shaped SPR-PCF sensor is suitable for applications in water contamination detection, liquid concentration measurement, food safety monitoring, etc. & COPY; 2023 Optica Publishing Group

引用

页码：E83 / E91

页数：9

共 47 条

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