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将理想匹配层(PML)吸收边界条件用于平面光波导结构的时域有限差分法(FDTD)分析,并对微腔体谐振环进行了数值计算模拟。证明了采用PML吸收边界条件的FDTD法应用于平面光波导结构分析的有效性。本方法对平面光波导的计算机辅助设计(CAD)具有实际意义,可用于分析任意复杂结构的平面光波导。
The ideal matching layer (PML) absorption boundary conditions are used in the finite-difference time-domain (FDTD) analysis of planar optical waveguide structures, and the numerical simulation of the microcavity resonator ring is carried out. It is proved that the FDTD method using PML absorption boundary conditions is effective for planar optical waveguide structure analysis. The method is of practical significance to computer-aided design (CAD) of planar optical waveguides and can be used to analyze planar optical waveguides of any complicated structure.