Simulation and experiment of enhanced SPR sensing in silver/graphene-modified microstructured fiber

IF 2.5 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications Pub Date : 2025-02-01 DOI:10.1016/j.photonics.2024.101342

Ying Guo , Xinpeng Tian , Shuguang Li , Jianshe Li , Yuefeng Qi

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引用次数: 0

Abstract

A microstructured fiber (MSF) sensor utilizing a silver/graphene composite film is proposed and demonstrated. The sensor is fabricated by depositing a nanometer-thick silver film on the MSF and subsequently transferring a graphene film to the silver film using the liquid phase method. The proposed sensor leverages the evanescent field effect of the cladding mode in the MSF, effectively enhancing the surface plasmon resonance (SPR) effect with the assistance of the composite film, which results in a great gain in sensor sensitivity. Simulation results show that the silver/graphene bilayer structure substantially influences the mode field of the sensor and can be well applied in subsequent refractive index sensing research. The experimental findings reveal that the sensitivity of the silver-coated MSF sensor increases to 2916.8 nm/RIU following modification with graphene. The proposed sensor has the potential for applications in biomedical and environmental monitoring.

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来源期刊

Photonics and Nanostructures-Fundamentals and Applications 工程技术-材料科学：综合

CiteScore

5.00

自引率

3.70%

发文量

审稿时长

62 days

期刊介绍： This journal establishes a dedicated channel for physicists, material scientists, chemists, engineers and computer scientists who are interested in photonics and nanostructures, and especially in research related to photonic crystals, photonic band gaps and metamaterials. The Journal sheds light on the latest developments in this growing field of science that will see the emergence of faster telecommunications and ultimately computers that use light instead of electrons to connect components.