Multimode interference effect in plasmonic subwavelength waveguides and an ultra-compact power splitter
Multimode interference effect in plasmonic subwavelength waveguides and an ultra-compact power splitter
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DOI：
10.1016/j.optcom.2007.05.058
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发表时间：
2007-10
影响因子：
2.4
通讯作者：
Zhanghua Han;Sailing He
中科院分区：
文献类型：
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作者：
Zhanghua Han;Sailing He
在金属-绝缘体-金属(MIM)表面等离子体波导中，当绝缘层厚度很小时，有效折射率的实部得到了提高，这种机制可以用来实现一些超紧凑的光子器件。分析了折射率导亚波长多模等离子体光波导的模式特性，研究了多模干涉效应。提出了一种新型超紧凑型MMI功分器，其横向尺寸小于自由空间波长的1/3。
The real part of the effective index is enhanced in a metal–insulator–metal (MIM) surface plasmon waveguide when the thickness of the insulator is quite small and this mechanism can be utilized to achieve some ultra-compact photonic devices. The mode properties of an index-guided multimode plasmonic waveguide of subwavelength size are analyzed and the multimode interference (MMI) effect is investigated. A novel ultra-compact MMI power splitter, with the transverse size less than 1/3 of the free space wavelength, is proposed.