D-type photonic crystal fiber low refractive index sensor based on surface plasmon

Runhua Li, Sitong Liu, Hongman Wang, Ziyi Yang, Lulu Sun and Ji Ma
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Runhua Li: Liaoning Provincial Key Laboratory, of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Sitong Liu: Liaoning Provincial Key Laboratory, of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Hongman Wang: Liaoning Provincial Key Laboratory, of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Ziyi Yang: Liaoning Provincial Key Laboratory, of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Lulu Sun: ��College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China
Ji Ma: Liaoning Provincial Key Laboratory, of Novel Micro-Nano Functional Materials, Liaoning Petrochemical University, Fushun 113001, P. R. China†College of Sciences, Liaoning Petrochemical University, Fushun 113001, P. R. China

International Journal of Modern Physics C (IJMPC), 2024, vol. 35, issue 07, 1-10

Abstract: This study presents the design and analysis of a novel surface plasmon resonance sensor based on D-type photonic crystal fiber. The analyte channel in the sensor comprises an open ring with a thin gold film deposited on the channel, inducing the surface plasmon resonance effect to enhance the resonance effect and improve the spectral sensitivity of the sensor. The proposed design eliminates the need to introduce liquid into the analyte channel. Upon inserting the sensor into the vessel, the analyte automatically flows into the liquid channel. Simulations illustrate the capability of the proposed sensor to detect low refractive indices spanning from 1.15 to 1.26, exhibiting a remarkable spectral sensitivity of up to 9000nm/RIU. The surface plasmon resonance sensor presented in this study emerges as a competitive candidate for applications requiring low refractive index detection. It is all because of its promising sensing results, wide refractive index sensing range, and simple, compact fiber design.

Keywords: Photonic crystal fiber; refractive index sensor; surface plasmon; Drude–Lorentz model (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S0129183124500918

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