Computation of full-vector modes for bending waveguide using cylindrical perfectly matched layers

被引:72
作者
Feng, NN [1 ]
Zhou, GR [1 ]
Xu, CL [1 ]
Huang, WP [1 ]
机构
[1] McMaster Univ, Dept Elect & Comp Engn, Hamilton, ON L8S 4K1, Canada
关键词
finite-difference method; full-vector mode; perfectly matched layers (PML) boundary condition; waveguide bends;
D O I
10.1109/JLT.2002.806333
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new full-vector approach to calculate leaky modes on three-dimensional bending waveguides is developed and demonstrated with the help of the cylindrical perfectly matched layer (CPML) numerical boundary conditions. By utilizing the complex coordinate stretching technique in the cylindrical system, a new set of full-vector wave equations for the bending waveguide structures are derived for the perfectly matched layer regions. Numerical solutions by the finite-difference schemes for the new wave equations are shown to yield highly accurate complex propagation constants (e.g., the bending-induced phase shifts and leakage losses) and modal field patterns, due primarily to the effective CPML.
引用
收藏
页码:1976 / 1980
页数:5
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