Mr. Wenyu Bie Profile

Wenyu Bie

at Harbin Engineering Univ

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Proceedings Article | 30 January 2019 Paper

Research on angle modulation based on nanohole array fiber optic sensor

Heliang Shen, Wenyu Bie, Rongxin Tao

Proceedings Volume 10841, 1084103 (2019) https://doi.org/10.1117/12.2505017

KEYWORDS: Sensors, Optical fibers, Fiber optics sensors, Gold, Angle modulation, Metals, Liquids, Refractive index, Structured optical fibers, Polishing

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Optical fiber sensor based on extraordinary optical transmission (EOT) phenomenon is widely used in chemistry, biomedicine and other fields for its intense near-field enhancement effect and high sensitivity of dielectric environment. However, processing periodic nanohole arrays structure on the fiber end face requires complicated process or expensive microfabrication equipments, which limits the development of optical fiber sensor based on EOT phenomenon. Striving to solve this problem, this paper proposes the template transfer method to process metal periodic nanostructures on the fiber end surface, and further examines the influence of excitation angle on the localized surface plasma resonance(LSPR) and surface plasmon resonance(SPR) through grinding the fiber end surface into sloping structures with different angles. The experiment results show that when the Angle is 7°, resonance excitation of fiber sensor with periodic nanohole arrays structure performs the strongest, as well as sensors achieving optimal sensing ability.

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