Analysis of curved waveguide structures using the MPSTD algorithm

In this paper, the multidomain pseudospectral time-domain (MPSTD) algorithm is applied to model the curved waveguide structures. In order to improve the stability of the MPSTD method, the design of a filtering procedure is discussed for corner singularities. By calculating the resonant frequencies and S-parameters of the waveguide structures, numerical results indicate that the MPSTD method can achieve high efficiency and accuracy when use to analyze curved objects. This paper presents a scheme to analyze the waveguide structures, and extends application field of the MPSTD method.