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Open AccessArticle

Grapefruit Fiber Filled with Silver Nanowires Surface Plasmon Resonance Sensor in Aqueous Environments

College of Precision Instrument and Opto-electronics Engineering, Key Laboratory of Opto-Electronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
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Sensors 2012, 12(9), 12016-12025; https://doi.org/10.3390/s120912016
Received: 19 June 2012 / Revised: 10 August 2012 / Accepted: 10 August 2012 / Published: 31 August 2012
(This article belongs to the Section Physical Sensors)
A kind of surface plasmon resonance sensor based on grapefruit photonic crystal fiber (PCF) filled with different numbers of silver nanowires has been studied in this paper. The surface plasmon resonance modes and the sensing properties are investigated comprehensively using the finite element method (FEM). The simulation results show that the intensity sensitivity is related to nanowire numbers and the distance between two nanowires. The optimum value obtained is 2,400 nm/RIU, corresponding to a resolution of 4.51 × 10−5 RIU with a maximum distance of 2 μm. To a certain extent, the PCF filled with more nanowires is better than with just one. Furthermore, the air holes of grapefruit PCF are large enough to operate in practice. Moreover, the irregularity of the filled nanowires has no effect on sensitivity, which will be very convenient for the implementation of experiments. View Full-Text
Keywords: grapefruit photonic crystal fiber; surface plasmon resonance; silver nanowire; nanowire distance and number grapefruit photonic crystal fiber; surface plasmon resonance; silver nanowire; nanowire distance and number
MDPI and ACS Style

Lu, Y.; Hao, C.-J.; Wu, B.-Q.; Huang, X.-H.; Wen, W.-Q.; Fu, X.-Y.; Yao, J.-Q. Grapefruit Fiber Filled with Silver Nanowires Surface Plasmon Resonance Sensor in Aqueous Environments. Sensors 2012, 12, 12016-12025.

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