基于金属纳米光栅结构修饰的 D 型光纤表面等离激元共振超材料传感器研究 (特邀)

doi:10.3969/j.issn.1007-5461.2026.01.012

量子电子学报 ›› 2026, Vol. 43 ›› Issue (1): 141-150.doi: 10.3969/j.issn.1007-5461.2026.01.012

基于金属纳米光栅结构修饰的 D 型光纤表面等离激元共振超材料传感器研究 (特邀)

刘琨 1,2,3*, 熊艺扬 1,2,3, 井建迎 1,2,3*, 朱枫彤 1,2,3,肖璐 1,2,3, 战晓寒 1,2,3, 刘津畅 1,2,3, 江俊峰 1,2,3,徐天华 1,2,3,4, 王双 1,2,3, 刘铁根 1,2,3

1 天津大学精密仪器与光电子工程学院, 天津 300072;2 天津大学光电信息技术教育部重点实验室, 天津 300072;3 天津大学光纤传感研究所, 天津 300072; 4 英国华威大学工程学院, 英国考文垂 CV4 7AL

收稿日期:2025-01-23 修回日期:2025-04-09 出版日期:2026-01-28 发布日期:2026-01-28
通讯作者: E-mail: beiyangkl@tju.edu.cn; jingjianying@tju.edu.cn E-mail: E-mail: beiyangkl@tju.edu.cn; jingjianying@tju.edu.cn
作者简介:刘琨 ( 1981 - ), 黑龙江哈尔滨人, 博士, 教授, 博士生导师, 主要从事光纤传感方面的研究。 E-mail: beiyangkl@tju.edu.cn
基金资助:
国家自然科学基金面上项目 (62375202), 天津市公共卫生科技重大专项 (24ZXGZSY00110)

Research on a D‑type fiber surface plasmon resonance metamaterial sensor modified with metal nano‑grating structure (Invited)

LIU Kun 1,2,3*, XIONG Yiyang 1,2,3 , JING Jianying 1,2,3*, ZHU Fengtong 1,2,3 ,XIAO Lu 1,2,3 , ZHAN Xiaohan 1,2,3 , LIU Jinchang 1,2,3 , JIANG Junfeng 1,2,3 ,XU Tianhua 1,2,3,4 , WANG Shuang 1,2,3 , LIU Tiegen 1,2,3

1 School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China; 2 Key Laboratory of Opto-Electronics Information Technology, Ministry of Education, Tianjin University, Tianjin 300072, China;3 Institute of Optical Fiber Sensing, Tianjin University, Tianjin 300072, China; 4 School of Engineering, University of Warwick, Coventry CV4 7AL, the United Kingdom

Received:2025-01-23 Revised:2025-04-09 Published:2026-01-28 Online:2026-01-28

摘要/Abstract

摘要： 超材料因其独特的亚波长结构设计和独特的电磁响应特性, 在提升表面等离激元共振 (Surface Plasmon Resonance, SPR) 传感器灵敏度方面具有广阔前景。本文设计了一款金属纳米光栅结构修饰的D型光纤SPR超材料传感器, 并对折射率范围在1.332~1.344的低折射率溶液进行了传感检测。首先, 基于倏逝波和表面等离极化激元 (Surface Plasmon Polaritons, SPPs) 的光波矢特性, 对D型光纤SPR传感器进行了理论分析, 绘制得到不同折射率下共振波长随入射角度变化的解析解曲线, 以便研究光纤中不同传导模式下的SPR激发条件。进而建立了D型光纤SPR超材料传感器二维有限元仿真模型进行模式分析研究, 计算了模式损耗和传感器的灵敏度。最后, 基于前述的仿真模型, 具体构建了分别为以不同间隔的双条带或者单条带为金属光栅单元的传感器, 以及使用银/铜替代金, 作为金属连续层和金属光栅材料时的传感器, 对比探究了这些传感器的灵敏度性能。研究结果表明, 改变双条带光栅单元的条带间隔, 对灵敏度的影响并不显著, 与光栅单元为单条带的传感器灵敏度几乎一致; 使用银替代金作为连续金属层材料时, 传感器的灵敏度性能达到最优, 可达1800 nm⋅RIU−1 。

关键词: 表面等离激元共振, 灵敏度优化, 金属纳米光栅, D型光纤

Abstract: Metamaterials, due to their unique subwavelength structural design and distinctive electromagnetic response characteristics, hold great promise in enhancing the sensitivity of surface plasmon resonance (SPR) sensors. In view of this, a D-type fiber SPR metamaterial sensor modified with a metallic nano-grating structure is designed in this work, and its sensing performance for low-refractive-index sensing detection in the range of 1.332–1.344 is evaluated. Firstly, based on the optical wave vector characteristics of evanescent waves and surface plasmon polaritons (SPPs), a theoretical analysis of theD-type fiber SPR sensor is conducted, and the analytical solution curves of resonance wavelength versus incident angle for different refractive indices are plotted, in order to study the conditions for SPR excitation under different propagation modes in the fiber. And then, a two-dimensional simulation model of the D-type fiber SPR metamaterial sensor is established for mode analysis, calculation of mode loss, and investigation of the sensor's sensitivity performance. Finally, based on the aforementioned simulation model, we construct sensor simulation models with different grating elements, such as single strips or double strips with different intervals, as well as sensor models using silver/copper instead of gold as the continuous metal layer and grating material, and make contrastive analysis of their sensitivity performances. The results show that changing the strip intervals of the double strip grating unit has little effect on sensitivity, which is almost consistent with the sensitivity of the sensor with single strip grating unit. And when silver is used instead of gold as the continuous metal layer material, the sensitivity performance of the sensor is optimal, reaching 1800 nm⋅RIU−1 .

Key words: surface plasmon resonance, sensitivity optimization, metal nano-gratings, D-type fiber

中图分类号:

TN253

刘琨, 熊艺扬, 井建迎, 朱枫彤, 肖璐, 战晓寒, 刘津畅, 江俊峰, 徐天华, 王双, 刘铁根, . 基于金属纳米光栅结构修饰的 D 型光纤表面等离激元共振超材料传感器研究 (特邀)[J]. 量子电子学报, 2026, 43(1): 141-150.

LIU Kun , XIONG Yiyang , , JING Jianying , ZHU Fengtong , , XIAO Lu , , ZHAN Xiaohan , , LIU Jinchang , , JIANG Junfeng , , XU Tianhua , , WANG Shuang , , LIU Tiegen , . Research on a D‑type fiber surface plasmon resonance metamaterial sensor modified with metal nano‑grating structure (Invited)[J]. Chinese Journal of Quantum Electronics, 2026, 43(1): 141-150.

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基于金属纳米光栅结构修饰的 D 型光纤表面等离激元共振超材料传感器研究 (特邀)

Research on a D‑type fiber surface plasmon resonance metamaterial sensor modified with metal nano‑grating structure (Invited)

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