Fiber-Optic Surface Plasmon Resonance Sensing Technology

Wenhua, 王文华 Wang; Zhengye, 熊正烨 Xiong; Wenqing, 师文庆 Shi; Jiang, 黄江 Huang; Xiuyun, 田秀云 Tian; Xianxiang, 费贤翔 Fei; Yuping, 谢玉萍 Xie

doi:10.3788/lop54.090008

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“…Especially with the development of photonic crystal fiber (PCF) technology, a new platform has been provided for the application of SPR in optical sensing. Various types of SPR-based PCF sensors have been manufactured with the advantages of simple structure, high accuracy, and small size, which further broadens the application prospect of SPR fiber sensors [10][11][12]. However, as the requirements for detection accuracy of various detection technologies are gradually increasing, how to further improve the performance has become a major challenge in the field of SPR optical sensors.…”

Section: Introductionmentioning

confidence: 99%

A High-Sensitivity SPR Refractive Index Sensor Based on No-Core Fiber with Ag-Cu Composite Films

Feng

et al. 2021

Sensors

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A fiber/Ag-Cu films surface plasmon resonance (SPR) refractive index (RI) sensor composed of multimode fiber-no-core-fiber-multimode fiber (MMF-NCF-MMF) structure is designed. The sensing region length and Cu film deposition time of sensor are gradually optimized by the control variable method, which finally achieves the improvement of sensor properties. We experimentally compared the sensing performance of the fiber/Ag film and fiber/Ag-Cu films sensor. Experimental results show that the fiber/Ag-Cu films sensor has good linearity (R-square = 0.993), and its sensitivity is as high as 3957 nm/RIU in the refractive index detection range of 1.3328–1.3853, which is 1109 nm/RIU higher than the sensitivity of a conventional fiber/Ag film sensor. The sensor presented in this paper adopts the structure with composite metal film, which outperforms the common single-layer metal film in chemical stability such as oxidation resistance and mechanical hardness. Meanwhile, the SPR sensor with MMF-NCF-MMF structure has the advantages of convenient manufacture and compact structure. In conclusion, it can bestow a unique advantage in the field of biological detection or chemical analysis.

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Section: Introductionmentioning

confidence: 99%

A High-Sensitivity SPR Refractive Index Sensor Based on No-Core Fiber with Ag-Cu Composite Films

Feng

et al. 2021

Sensors

View full text Add to dashboard Cite

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Fiber-Optic Surface Plasmon Resonance Sensing Technology

Cited by 1 publication

References 0 publications

A High-Sensitivity SPR Refractive Index Sensor Based on No-Core Fiber with Ag-Cu Composite Films

A High-Sensitivity SPR Refractive Index Sensor Based on No-Core Fiber with Ag-Cu Composite Films

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