具有高群折射率和透射率的等离子体-电介质复合光栅

Plasmonic-dielectric compound grating with high group-index and transmission.

作者信息

Dai Lei, Liu Yang, Jiang Chun

机构信息

State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai, China.

出版信息

Opt Express. 2011 Jan 17;19(2):1461-9. doi: 10.1364/OE.19.001461.

DOI:10.1364/OE.19.001461

PMID:21263688

Abstract

We propose a compound system consisting of a dielectric grating and a plasmonic resonance cavity embedded in the grating. Based on the interference effect between the surface mode supported by the dielectric grating and the plasmonic-induced cavity mode, this system could achieve slow light with group index more than 200 and transmission more than 75%. Meanwhile, we examine the effects of the period numbers of the compound system and photonic crystal superlattice made up of alternate layers of the grating and air on the properties of slow light.

摘要

我们提出了一种复合系统，该系统由一个介质光栅和嵌入在光栅中的等离子体共振腔组成。基于介质光栅支持的表面模式与等离子体诱导的腔模式之间的干涉效应，该系统可以实现群折射率大于200且透射率大于75%的慢光。同时，我们研究了该复合系统以及由光栅和空气交替层组成的光子晶体超晶格的周期数对慢光特性的影响。