A Dual-Interface PCF-SPR Sensor for Simultaneous Refractive Index and Temperature Detection

IF 5.6 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2026-09-16 DOI:10.1007/s11468-026-03468-z

Wenxiao Dong, Lulu Sun, Haojun Zhao, Yan Chen, Yi Liu, Ji Ma

{"title":"A Dual-Interface PCF-SPR Sensor for Simultaneous Refractive Index and Temperature Detection","authors":"Wenxiao Dong, Lulu Sun, Haojun Zhao, Yan Chen, Yi Liu, Ji Ma","doi":"10.1007/s11468-026-03468-z","DOIUrl":null,"url":null,"abstract":"<div>A dual-interface photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) is proposed for the simultaneous detection of refractive index (RI) and temperature. In the dual-interface configuration, two independent sensing channels are formed on opposite sides of the PCF, and gold (Au) films are deposited on the polished surfaces to excite the SPR effect. Numerical results show that the resonance wavelength exhibits distinct spectral shifts in response to variations in both the analyte RI and temperature. For RI sensing, the proposed sensor achieves a maximum wavelength sensitivity of 8300 \\(\\mathrm{nm}/^\\circ\\mathrm C\\) over an RI range of 1.34–1.42. For temperature sensing, a maximum sensitivity of 10.8 \\(nm^\\circ\\text{C}\\) is obtained within the temperature range of 10–80 \\(^{\\circ}\\text{C}\\). The RI and temperature detection resolutions are estimated to be \\(\\:\\text{1.20}\\times{\\text{10}}^{\\text{-5}}\\) \\(\\:\\text{RIU}\\) and \\(\\:\\text{9.26}\\times{\\text{10}}^{\\text{-3}}{^\\circ}\\text{C}\\), respectively. In addition, the dual-interface configuration facilitates metal-film deposition and improves the fabrication feasibility of the sensor. These results indicate that the proposed PCF-SPR sensor has promising potential for simultaneous RI and temperature monitoring because of its favorable sensitivity, relatively wide detection ranges, and potential fabrication feasibility.</div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"21 9","pages":"3679 - 3691"},"PeriodicalIF":5.6000,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasmonics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s11468-026-03468-z","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

A dual-interface photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) is proposed for the simultaneous detection of refractive index (RI) and temperature. In the dual-interface configuration, two independent sensing channels are formed on opposite sides of the PCF, and gold (Au) films are deposited on the polished surfaces to excite the SPR effect. Numerical results show that the resonance wavelength exhibits distinct spectral shifts in response to variations in both the analyte RI and temperature. For RI sensing, the proposed sensor achieves a maximum wavelength sensitivity of 8300 \(\mathrm{nm}/^\circ\mathrm C\) over an RI range of 1.34–1.42. For temperature sensing, a maximum sensitivity of 10.8 \(nm^\circ\text{C}\) is obtained within the temperature range of 10–80 \(^{\circ}\text{C}\). The RI and temperature detection resolutions are estimated to be \(\:\text{1.20}\times{\text{10}}^{\text{-5}}\) \(\:\text{RIU}\) and \(\:\text{9.26}\times{\text{10}}^{\text{-3}}{^\circ}\text{C}\), respectively. In addition, the dual-interface configuration facilitates metal-film deposition and improves the fabrication feasibility of the sensor. These results indicate that the proposed PCF-SPR sensor has promising potential for simultaneous RI and temperature monitoring because of its favorable sensitivity, relatively wide detection ranges, and potential fabrication feasibility.

查看原文本刊更多论文

用于同时检测折射率和温度的双界面PCF-SPR传感器

提出了一种基于表面等离子体共振（SPR）的双界面光子晶体光纤（PCF）传感器，用于同时检测折射率（RI）和温度。在双界面结构中，在PCF的两侧形成两个独立的传感通道，并在抛光表面沉积金（Au）膜以激发SPR效应。数值结果表明，共振波长随分析物RI和温度的变化呈现明显的谱移。对于RI感测，所提出的传感器在1.34-1.42的RI范围内实现了8300 \(\mathrm{nm}/^\circ\mathrm C\)的最大波长灵敏度。对于温度传感，在10-80 \(^{\circ}\text{C}\)的温度范围内，最大灵敏度为10.8 \(nm^\circ\text{C}\)。估计RI和温度检测分辨率分别为\(\:\text{1.20}\times{\text{10}}^{\text{-5}}\)\(\:\text{RIU}\)和\(\:\text{9.26}\times{\text{10}}^{\text{-3}}{^\circ}\text{C}\)。此外，双界面结构有利于金属膜的沉积，提高了传感器的制造可行性。这些结果表明，所提出的PCF-SPR传感器具有良好的灵敏度，相对较宽的检测范围和潜在的制造可行性，具有同时监测RI和温度的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.