Metal Nanowire Assisted Hollow Core Fiber Sensor for an Efficient Detection of Small Refractive Index Change of Measurand Liquid
| Autor: | B. M. A. Rahman, Vinod Kumar Singh, Souvik Ghosh, Rahul Kumar Gangwar, Akhilesh Kumar Pathak |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
TK Biophysics Nanowire chemistry.chemical_element 02 engineering and technology 01 natural sciences Biochemistry 010309 optics Metal 0103 physical sciences Polariton Fiber Surface plasmon resonance business.industry 021001 nanoscience & nanotechnology Copper Core (optical fiber) chemistry visual_art visual_art.visual_art_medium Optoelectronics 0210 nano-technology business Refractive index Biotechnology |
| Zdroj: | Plasmonics. 14:1823-1830 |
| ISSN: | 1557-1963 1557-1955 |
| DOI: | 10.1007/s11468-019-00969-y |
| Popis: | In this article, a cost-effective hollow core fiber (HCF)-based refractive index (RI) sensor using surface plasmon resonance (SPR) is designed and demonstrated. The sensor consists of a metal nanowire inside an HCF along with the sensing medium of various refractive indices. SPR effect between polaritons and the guided core mode of designed HCF is exploited to enhance the sensing performance. A full vectorial finite element method (FEM) is used for the design and analyses of the sensing probes which exhibit very high sensitivities of 12,400 nm/RIU, 10560 nm/RIU, and 6400 nm/RIU for copper (Cu), gold (Au), and silver (Ag), respectively with a resolution of 1.61 × 10−6 RIU. Additionally, the influence of metal wire dimension is also investigated in this paper. The reported simple and low-cost sensor exhibits high sensitivity for liquid with refractive indices slightly higher than that of the dielectric tube, such as olive oil, turpentine, kerosene, chloroform, carbon tetrachloride, glycerol, and toluene. |
| Databáze: | OpenAIRE |
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