抄録
A pseudo-spectral time-domain method, abbreviated as PSTD method, plays an important role in analyzing many kinds of scientific and engineering fields, especially large scale area problems such as weather forecast and scattering. The employment of the PSTD method is owed to the usage of the fast Fourier transform (FFT) for the spatial derivatives of Maxwell's equations. In this paper we discuss the PSTD method for the electromagnetic transient problem and its application to the analysis of optical waveguides with a long periodic grating, and show the experimental result for the waveguides fabricated based on the PSTD method discussed here.
