人工表面等离子体结构的研究及应用
本文选题:人工表面等离子体 + 周期结构 ; 参考:《桂林电子科技大学》2015年硕士论文
【摘要】:人工表面等离子体激元(SSPPs)是光波段中表面等离子体激元在微波和太赫兹波段的一个重要拓展,它本质上是一种被金属表面周期性凹槽或者孔约束和传播的表面电磁模式。由于SSPPs诸多的优良特性,近些年引起了许多国内外学者的关注。基于此,本文对超薄型人工表面等离子体结构进行了深入研究。首先我们对超薄金属单光栅作为SSPPs波导进行了分析,发现单光栅在引导SSPPs传输时传输损耗较大,进而双光栅结构的SSPPs波导被提出用来解决该问题。本文分别从色散关系、传播特性、模式分布的角度对双光栅结构作为SSPPs波导进行了深入的研究。结果表明,光栅的凹槽深度与基板的介电常数对SSPPs波的截止频率影响较为明显,并且研究发现双光栅结构所支持的电磁模式主模为奇模SSPPs波。随后,本文对复合周期结构的超薄金属光栅进行了研究和分析,发现复合周期光栅结构作为SSPPs波导时能够支持双波段的SSPPs波传输。基于奇模SSPPs波的电场分布特性,文中设计了两种用于双光栅的SSPPs波激励装置:一种微带线馈电的SSPPs波激励装置;一种共面波导馈电的SSPPs波激励装置。实验测试结果证实了该激励装置能够有效地激励起双光栅里的奇模SSPPs波。两种激励装置各具有不同特点,分别适用于不同场合。结合双光栅和激励装置,本文设计了两种直波导结构的SSPPs滤波器,一种900弯曲结构的滤波器,一种复合周期双光栅的双频带SSPPs滤波器。最后介绍了前人研究的H型人工表面等离子体结构,并在此基础上结合复合H型SSPPs结构设计了一款SSPPs功分器。实验测试结果证明了这几种功能器件都具有优秀的性能。这为SSPPs从理论研究走向实际应用奠定了一定的基础。
[Abstract]:Artificial surface plasmon excitation (SSPPs) is an important extension of surface plasmon in the microwave and terahertz bands in the light wave band. It is essentially a surface electromagnetic mode confined and propagated by periodic grooves or holes on the surface of metal. Due to the excellent characteristics of SSPPs, many scholars at home and abroad have paid close attention to them in recent years. Based on this, the structure of ultra thin artificial surface plasma is studied in detail. First, we analyze the ultra-thin metal single grating as the SSPPs waveguide, and find that the single grating has a high transmission loss when guiding the SSPPs, and then the double-grating SSPPs waveguide is proposed to solve this problem. In this paper, the structure of double gratings as SSPPs waveguides is studied in terms of dispersion relation, propagation characteristics and mode distribution. The results show that the depth of grooves and the dielectric constant of the substrate have obvious effects on the cut-off frequency of SSPPs waves, and it is found that the main mode of electromagnetic modes supported by the double grating structure is singularly mode SSPPs waves. Then, the ultra-thin metal grating with composite periodic structure is studied and analyzed. It is found that the composite periodic grating structure can support the propagation of SSPPs waves in two bands when it is used as a SSPPs waveguide. Based on the electric field characteristics of odd-mode SSPPs waves, two kinds of SSPPs wave exciters for double gratings are designed: a microstrip line-fed SSPPs wave excitation device and a coplanar waveguide SSPPs wave excitation device. The experimental results show that the exciter can excite odd-mode SSPPs waves in double gratings effectively. The two kinds of excitation devices have different characteristics and are suitable for different occasions. In this paper, two kinds of SSPPs filters with straight waveguide structure, one filter with 900 bending structure and one kind of double frequency band SSPPs filter with compound periodic double gratings are designed by combining double gratings and exciters. Finally, the structure of H-type artificial surface plasma is introduced, and a SSPPs power divider is designed based on the composite H-type SSPPs structure. The experimental results show that these functional devices have excellent performance. This lays a foundation for SSPPs from theoretical research to practical application.
【学位授予单位】:桂林电子科技大学
【学位级别】:硕士
【学位授予年份】:2015
【分类号】:TN713;TN25
【相似文献】
相关期刊论文 前10条
1 黄宗华,胡立成,杨选民;激光双光栅法研究音叉的振动——一种新的高精度测量小振幅的方法[J];物理实验;1984年06期
2 万玲玉;张卫平;陈茂鑫;黄萌;郭月波;;双光栅成像中的汇合级光能量[J];中国激光;2007年08期
3 陈水波;;双光栅测速[J];大学物理;2008年01期
4 张卫平;李洪亮;吴亚丽;;双光栅成像效应中物像位置的横向偏移[J];广西大学学报(自然科学版);2009年02期
5 易静;;利用双光栅开展设计性实验的探讨[J];天津城市建设学院学报;2009年04期
6 李柱峰;徐秀平;;双光栅弹性模量测量实验方法[J];物理实验;2013年01期
7 杜佩之;高熠鑫;高畅;周进;;动态双光栅测量金属热膨胀系数[J];物理实验;2013年08期
8 韩光耀,张毓昌,易明,黄宗华,杨选民;激光的双光栅移频效应理论及应用[J];中国激光;1985年06期
9 谢建平,姚q,明海;双光栅法测量微小位移[J];中国科学技术大学学报;1986年01期
10 姜谦,俞祖和,米辛,张治国,傅盘铭;用时间延迟激光感生双光栅方法测量两束光的相对相位变化[J];光学学报;1993年02期
相关会议论文 前2条
1 张卫平;胡立坤;卢泉;曾宪金;;双光栅色散-汇合光谱成像仪的单片机控制改造与实现[A];“广东省光学学会2013年学术交流大会”暨“粤港台光学界产学研合作交流大会”会议手册论文集[C];2013年
2 吕新夫;高翔;周惠君;江洪建;王思慧;;用两种可行的光学方法测量磁致伸缩系数[A];第六届全国高等学校物理实验教学研讨会论文集(下册)[C];2010年
,本文编号:2049061
本文链接:https://www.wllwen.com/kejilunwen/dianzigongchenglunwen/2049061.html