High-Sensitivity Two-Core Dual-Polarization Photonic-Crystal-Fiber Surface-Plasmon-Resonance Sensor Based on Indium Tin Oxid

Pub Date : 2023-08-26 DOI:10.1007/s10946-023-10144-8

Nan Cui, Honggang Pan, Ailing Zhang, Zihong Zhao, Zhipan Chen, Bo Zhang, Sihang Lin, Guangxiao Cao

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Abstract

In this paper, we propose a high-sensitivity two-core dual-polarization photonic-crystal-fiber surfaceplasmon-resonance (PCF-SPR) sensor based on Indium Tin oxide (ITO). ITO is a conductor material with adjustable photoelectric properties and low losses in the infrared range, and the two-core structure could better direct the incident light to the metal surface to enhance the coupling. According to numerical simulation results, the maximum wavelength sensitivities are 17,000 nm/RIU and 25,500 nm/RIU in the x-polarization mode and y-polarization mode. The maximum resolution of the x-polarization mode and y-polarization mode of the sensor can reach 5.88·10⁻⁶ RIU and 3.92·10⁻⁶ RIU, respectively, and the liquid refractive index detection range is 1.32 – 1.39. Taking into account the simple structure and excellent sensing performance, the sensor has wide application prospect and can accurately detect the refractive index of liquids, such as blood plasma, hemoglobin, etc.

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基于氧化铟锡的高灵敏度双核双偏振光子晶体光纤表面等离子体共振传感器

本文提出了一种基于氧化铟锡(ITO)材料的高灵敏度双核双极化光子晶体光纤表面等离子体共振(PCF-SPR)传感器。ITO是一种光电性能可调的导体材料，在红外范围内损耗低，双核结构可以更好地将入射光引导到金属表面，增强耦合。根据数值模拟结果，在x偏振模式和y偏振模式下，最大波长灵敏度分别为17000 nm/RIU和25500 nm/RIU。该传感器x偏振模式和y偏振模式的最大分辨率分别可达5.88·10−6 RIU和3.92·10−6 RIU，液体折射率检测范围为1.32 ~ 1.39。该传感器结构简单，传感性能优异，具有广泛的应用前景，可准确检测血浆、血红蛋白等液体的折射率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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