| 表面等离子体环形共振器的滤波性质 |
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| 引用本文： | 陈靖,陆文强,孙骞. 表面等离子体环形共振器的滤波性质[J]. 物理实验, 2012, 32(7): 6-9 |
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| 作者姓名： | 陈靖 陆文强 孙骞 |
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| 作者单位： | 南开大学物理科学学院实验中心,天津,300071 |
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| 基金项目： | 教育部物理学基地人才培养基金资助，中央高校基本科研业务费专项基金，高等学校博士学科点专项科研基金(新教师类) |
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| 摘 要： | 利用时域有限差分法研究了基于金属-绝缘体-金属结构的环形波导共振器的滤波特性.研究结果表明,环形波导中存在多个共振模式.共振波长受环形波导的内径调制,随着环形波导内径的增加共振波长发生红移.共振带宽受耦合距离调制,随着耦合距离的增加带宽显著地减小.
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| 关 键 词： | 表面等离子体 环形共振器 时域有限差分法 滤波 |
Filtering characteristic of surface plasmon ring resonator |
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| CHEN Jing , LU Wen-qiang , SUN Qian. Filtering characteristic of surface plasmon ring resonator[J]. Physics Experimentation, 2012, 32(7): 6-9 |
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| Authors: | CHEN Jing LU Wen-qiang SUN Qian |
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| Affiliation: | (College of Physics,Nankai University,Tianjin 300071,China) |
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| Abstract: | The filtering characteristic of a ring resonator based on metal-insulator-metal(MIM) structure was simulated using finite-difference time-domain method.There were several types of modes in the ring resonator,the resonance wavelengths were manipulated by adjusting the inner radius of the resonator.The transmission peaks exhibited red shift as the inner radius increased.Bandwidths of the resonance spectra were tuned by changing the coupling distance between the ring and MIM waveguides.The bandwidths decreased prominently as the coupling distances increased. |
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| Keywords: | surface plasmon ring resonator finite-difference time-domain method filtering |
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