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Near-infrared surface plasmon resonance sensor based on photonic crystal fiber with big open rings

  • Chao Liu*
  • , Jianwei Wang
  • , Xin Jin
  • , Famei Wang
  • , Lin Yang
  • , Jingwei Lv
  • , Guanglai Fu
  • , Xianli Li
  • , Qiang Liu
  • , Tao Sun*
  • , Paul K. Chu*
  • *Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

A photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) is designed for near-infrared detection. The Ag-Au dual layers are selected as the plasmonic materials and the silver layer is covered by a gold layer for protection against oxidation. Influences of structural parameters on the confinement losses are investigated by the finite element method (FEM). The resonance wavelength of the sensor varies from 1470 nm to 2150 nm and a maximum wavelength sensitivity of 12400 nm/RIU and corresponding resolution of 8.06×10−6 RIU are obtained for analyte refractive indexes between 1.22 and 1.36.
Original languageEnglish
Article number164466
JournalOptik
Volume207
Online published28 Feb 2020
DOIs
Publication statusPublished - Apr 2020

Research Keywords

  • FEM
  • Photonic crystal fiber
  • Surface plasmon resonance

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