Bending Loss Calculation of a Dielectric-Loaded Surface Plasmon Polariton Waveguide Structure
Bending Loss Calculation of a Dielectric-Loaded Surface Plasmon Polariton Waveguide Structure作者机构：State Key Laboratory for Mesoscopic Physics and Department of Physics Peking University Beijing 100871
出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)
年 卷 期：2010年第27卷第2期
页 面：263-266页
核心收录：
学科分类：08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0704[理学-天文学] 0803[工学-光学工程] 0814[工学-土木工程]
基 金：Supported by the National Natural Science Foundation of China under Grant Nos 10821062 and 10804004 the National Basic Research Program of China under Grant Nos 2007CB307001and 2009CB930504 and the Specialized Research Fund for the Doctoral Program of Higher Education under Grant No 200800011023
主 题：Condensed matter: electrical magnetic and optical Surfaces interfaces and thin films Optics quantum optics and lasers
摘 要：Based on full 3D finite element method simulations, the transmission of a dielectric-loaded surface plasmon polariton waveguide （DLSPPW） based 1/4 circle is calculated for a 90° bend model and a 270° bend model, respectively. It is found that the 270° bend model gives almost pure bending loss while the 90° bend model contains additional coupling loss. The models are applied to deduce the loss and unloaded quality factor of DLSPPW based waveguide ring resonators （WRRs） and the results of the 270° bend model agree well with direct simulating results of the WRRs. Thus the 270° bend model gives a fast and simple way to calculate bending loss and it is helpful for WRR design because no wavelength scan is needed.
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