Design of a Simple Integrated Coupler for SPP Excitation in a Dielectric Coated Ag Thin Film

作     者：Rakibul Hasan Sagor Md. Ruhul Amin Md. Ghulam Saber 

作者机构：Department of Electrical and Electronic Engineering Islamic University of Technology Board Bazar Gazipur-1704 Bangladesh 

基　　金：Supported by Islamic University of Technology 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2014年第31卷第6期

页      码：94-97页

摘      要：A simple integrated coupler is proposed for the efficient excitation of surface plasmon polariton （SPP） mode in a thin metal film. The SPP mode is generated in a single Ag-dielectric interface by the incident field and coupled with an Ag thin film. The coupling efficiency at different wavelengths using two different dielectrics, gallium lanthanum sulfide （GLS） and aluminum gallium arsenide （AIGaAs） is calculated by analyzing the SPP propagation dynamics with the finite difference time domain method. A maximum coupling efficiency of 70~ is obtained at a wavelength of 46Ohm when GLS is used, whereas the corresponding value obtained for A1GaAs is 60~o at 56Onto. The proposed structure can be used to excite SPPs in a nano-thin film from an external bulky source and is easier to fabricate since a single interface metal-dielectric configuration is used to excite the metal-thin film.

主 题 词：Efficiency 

学科分类：0810[工学-土木类] 08[工学] 080401[080401] 0804[工学-材料学] 080402[080402] 0805[工学-能源动力学] 0835[0835] 0704[理学-天文学类] 0803[工学-仪器类] 081002[081002] 

核心收录：

D　O　I：10.1088/0256-307X/31/6/064201

馆 藏 号：203935418...