Trapping of surface plasmon waves in graded grating waveguide system

被引：79
作者：
Wang, Guoxi [1 ]
Lu, Hua [1 ]
Liu, Xueming [1 ]
机构：
[1] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 01期
基金：
中国国家自然科学基金;
关键词：
diffraction gratings; numerical analysis; optical waveguides; plasmonics; surface plasmons; BRAGG GRATINGS; STUB STRUCTURE; SLOW-LIGHT;
D O I：
10.1063/1.4733477
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have proposed a graded grating plasmonic system with a significant slow-light effect for the propagation of high-confinement surface plasmon (SP) wave. Theoretical analysis and numerical simulations show that the localized position of SP wave in the plasmonic waveguide is dependent on the operating frequency. It is found that the slow-light effect exhibits an obvious enhancement with propagation. The proposed ultracompact configuration offers the advantage of a large trapping bandwidth of 90 THz, which may find excellent applications on slow-light systems, especially optical buffers. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4733477]
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页数：3
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