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首页> 外文期刊>Optics & Laser Technology >Performance study of surface plasmon resonance and lossy mode resonance based fiber optic sensors utilizing silver and indium oxide layers: An experimental investigation
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Performance study of surface plasmon resonance and lossy mode resonance based fiber optic sensors utilizing silver and indium oxide layers: An experimental investigation

机译：利用银和氧化铟层的表面等离子体谐振和有损模式共振基于光学传感器的性能研究：实验研究

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摘要

This study presents here the experimental investigations on a surface plasmon resonance (SPR)/lossy mode resonance (LMR) based fiber optic sensors coated with silver and indium oxide layers. Different sensing probes have been fabricated by coating (i) a single layer of indium oxide, (ii) a single layer of silver and (iii) a double layer of indium oxide and silver (with different thicknesses) symmetrically onto to the bare core of silica fiber. The sensitivity of these fiber optic sensing probes towards surrounding region refractive index variations are determined using different concentrations of sucrose solutions. It was found that sensor probe fabricated with coating of 100 nm thickness of indium oxide was two times more sensitive than the conventionally used fiber optic sensing probe coated with only silver layer. The sensitivity of a double layer coated fiber optic sensor with various thicknesses of indium oxide and silver layers is in between the two extremes of the sensitivities. This study will find suitable applications in the field of chemical and biochemical sensing. The drawbacks of silver coatings and the advantages of LMR supporting indium oxide have also been discussed.
机译：本研究介绍了对涂有银和氧化铟层的表面等离子体谐振（SPR）/有损模式共振（LMR）光学传感器的实验研究。通过涂覆（i）单层氧化铟，（ii）一层银和（iii）对称氧化铟（II）的单层银和（iii）的单层银和（iii）对称氧化铟和银（具有不同的厚度）的双层二氧化硅纤维。使用不同浓度的蔗糖溶液确定这些光纤感测探测朝向周围区域折射率变化的敏感性。发现，用涂覆100nm厚度涂层制造的传感器探针比涂覆银层的常规使用的纤维感测探针涂覆的两倍敏感。双层涂覆的光纤传感器具有各种厚度的氧化铟和银层的敏感性在敏感度的两个极端之间。本研究将在化学和生化感测领域找到合适的应用。还讨论了银涂层的缺点和支持氧化铟的LMR的优点。

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