Full-wave analysis of metallic structures at optical frequencies

Plasmonics;Finite Element Method (FEM);Discontinuous Galerkin Time-Domain (DGTD);Numerical analysis

Zeng, Yunjia ; Jin ; Jianming

关键词: Plasmonics;    Finite Element Method (FEM);    Discontinuous Galerkin Time-Domain (DGTD);    Numerical analysis;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/50476/Yunjia_Zeng.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

This thesis presents the theoretical background and the full-wave analysis ofmetallic structures at optical frequencies. The optical properties of metalsand the related plasmonic effects are reviewed. Both the frequency-domainand time-domain methods for simulating the structures are discussed. Thefinite element method is applied to study the scattering from the metallicstructures in the frequency domain. The simulation results are shownfor two-dimensional structures that include infinitely long metallic cylinderswith various cross sections at optical frequencies. The discontinuous Galerkintime-domain (DGTD) method is implemented to study metallic structuresat optical frequencies. The formulation of the DGTD method is derived toinclude the dispersive material models for the metals. Efficient implementationsof the DGTD method for studying periodic structures are also realized.The simulation results of applying the DGTD method to model and simulatetwo-dimensional metallic devices at optical frequencies are presented for bothstand-alone and periodic structures.