利用氧化铌锂设计和优化具有高灵敏度和品质因数的布洛赫表面波传感器

IF 1.1 4区 物理与天体物理 Q4 NANOSCIENCE & NANOTECHNOLOGY
Yuanshi Wei, Jiakang Shi, Zhen Liu, Daohan Ge, Liqiang Zhang
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引用次数: 0

摘要

这项研究提出了一种基于布洛赫表面波(BSW)的折射率传感器,具有高灵敏度和品质因数(Q)。该传感器利用一维光子晶体 TiO2/MgF2 作为分布式布拉格反射器,并采用 LiNbO3 薄膜作为顶层缺陷层,通过 Kretschmann 棱镜激发 BSW。利用严格的耦合波分析方法进行了数值模拟,以探索各种棱镜配置,结果表明低折射率棱镜能为 BSW 传感器带来更优越的性能。所设计传感器的灵敏度达到 1600 nm/RIU(或 938 °/RIU),并对其半最大全宽和品质因数(Q)进行了分析,传感器的 Q 值达到 8000 /RIU(或 13595 /RIU)。通过制造误差分析发现,所设计的传感器具有良好的机械鲁棒性,易于制造,也易于集成。结果表明,LiNbO3 非线性可调材料在折射率传感器领域具有广阔的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design and optimization of Bloch surface wave sensor with high sensitivity and quality factor using LiNbO3
This work presents a refractive index sensor based on Bloch surface waves (BSW) with high sensitivity and quality factor (Q). The sensor utilizes a one-dimensional photonic crystal TiO2/MgF2 as a distributed Bragg reflector and employs a LiNbO3 thin film as the top defect layer to excite BSW through a Kretschmann prism. Numerical simulations using the rigorous coupled wave analysis method are conducted to explore various prism configurations, revealing that low refractive index prisms yield superior performance for BSW sensors. The designed sensor achieves a sensitivity of 1600 nm/RIU (or 938 °/RIU) and is analyzed for its full-width at half-maximum and quality factor (Q), with the sensor’s Q value reaching 8000 /RIU (or 13595 /RIU). Through manufacturing error analysis, it was found that the designed sensor has good mechanical robustness, is easy to manufacture, and is also easy to integrate. The results show that the LiNbO3 nonlinear tunable material has great application prospects in the field of refractive index sensors.
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来源期刊
Journal of Nanophotonics
Journal of Nanophotonics 工程技术-光学
CiteScore
2.60
自引率
6.70%
发文量
42
审稿时长
3 months
期刊介绍: The Journal of Nanophotonics publishes peer-reviewed papers focusing on the fabrication and application of nanostructures that facilitate the generation, propagation, manipulation, and detection of light from the infrared to the ultraviolet regimes.
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