基于耦合表面等离子体狭缝波导的超短等离子体分束器和波导交叉结构。

Ultra-short plasmonic splitters and waveguide cross-over based on coupled surface plasmon slot waveguides.

作者信息

Fang Yi-Jiao, Chen Zhuo, Chen Ling, He Kai-Ting, Han Zhen-Lv, Wang Zhen-Lin

机构信息

Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China.

出版信息

Opt Express. 2011 Jan 31;19(3):2562-72. doi: 10.1364/OE.19.002562.

DOI:10.1364/OE.19.002562

PMID:21369076

Abstract

Composite metal-dielectric-metal (MDM) surface plasmon polariton (SPP) structures are first proposed to realize the ultra-short optical splitters with simplified designs. The operation mechanism is based on the contra-directional coupling achieved in composite plasmonic slot waveguides. In certain cases, the switching function can also be realized. It is further shown that based on the same physical mechanism multi-dielectric-core composite MDM structures could serve as a novel plasmonic waveguide crossover component with low cross talk and high throughput.

摘要

首次提出了复合金属-电介质-金属（MDM）表面等离激元极化激元（SPP）结构，以实现具有简化设计的超短光分路器。其工作机制基于复合等离激元狭缝波导中实现的反向耦合。在某些情况下，还可以实现开关功能。进一步表明，基于相同的物理机制，多电介质芯复合MDM结构可以作为一种新型的等离激元波导交叉组件，具有低串扰和高吞吐量。