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含金属双缝的金属-电介质-金属波导耦合环形腔Fano共振慢光特性研究

Fano Resonance Slow Light Characteristics of Metal-Dielectric-Metal Waveguide Coupled Ring Cavity with Metallic Double-Slit

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摘要

基于表面等离子亚波长结构的传输特性, 提出一种含金属双缝的金属-电介质-金属波导耦合环形腔结构。由金属双缝波导谐振腔形成的较宽的连续态波与由环形谐振腔形成的较窄的孤立态波耦合干涉相消, 形成Fano共振。结合耦合波理论, 分析了该结构形成Fano共振的传输及相位特性。采用有限元分析法对该结构进行模拟仿真, 定量分析了结构参数对结构慢光特性的影响, 实现结构参数优化。结果表明, 优化后的结构群折射率可达205。该结构能为集成等离子慢光器件的设计提供有效的理论参考。

Abstract

Based on the transmission characteristics of surface plasma sub-wavelength structure, a metal-dielectric-metal waveguide coupled ring cavity structure with metallic double-slit is proposed. The Fano resonance is formed by the coupled destructive interference between wide wave with continuous state generated by a metallic double-slit waveguide resonator and narrow wave with isolated state generated by a ring cavity. According to the coupled wave theory, the transmission and phase characteristics of Fano resonance formed by this structure are analyzed. The finite element analysis method is used to simulate the structure, and the effects of the structural parameters on the slow light effect are analyzed quantitatively to optimize the structural parameters. The results show that the optimized group index can reach 205. This structure can provide an effective theoretical reference for the design of integrated plasma slow light devices.

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中图分类号:O539

DOI:10.3788/aos201737.0924002

所属栏目:表面光学

基金项目:国家自然科学基金(61201112,61475133)、河北省自然科学基金(F2016203188, F2016203245)、河北省高等学校青年拔尖人才计划(BJ2014056)

收稿日期:2017-04-26

修改稿日期:2017-05-26

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陈 颖:燕山大学电气工程学院河北省测试计量技术及仪器重点实验室, 河北 秦皇岛 066004
罗 佩:燕山大学电气工程学院河北省测试计量技术及仪器重点实验室, 河北 秦皇岛 066004
田亚宁:燕山大学电气工程学院河北省测试计量技术及仪器重点实验室, 河北 秦皇岛 066004
刘晓飞:燕山大学电气工程学院河北省测试计量技术及仪器重点实验室, 河北 秦皇岛 066004
赵志勇:燕山大学电气工程学院河北省测试计量技术及仪器重点实验室, 河北 秦皇岛 066004
朱奇光:燕山大学信息科学与工程学院河北省特种光纤与光纤传感器重点实验室, 河北 秦皇岛 066004

联系人作者:陈颖(chenying@ysu.edu.cn)

备注:陈 颖(1980-), 女, 博士, 教授, 博士生导师, 主要从事微纳光学器件方面的研究。

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引用该论文

Chen Ying,Luo Pei,Tian Yaning,Liu Xiaofei,Zhao Zhiyong,Zhu Qiguang. Fano Resonance Slow Light Characteristics of Metal-Dielectric-Metal Waveguide Coupled Ring Cavity with Metallic Double-Slit[J]. Acta Optica Sinica, 2017, 37(9): 0924002

陈 颖,罗 佩,田亚宁,刘晓飞,赵志勇,朱奇光. 含金属双缝的金属-电介质-金属波导耦合环形腔Fano共振慢光特性研究[J]. 光学学报, 2017, 37(9): 0924002

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