半导体学报2005，Vol.26Issue(7)：1281-1286,6.
Padé近似在光子晶体模拟中的应用
Application of Padé Approximation in Simulating Photonic Crystals
摘要
Abstract
To save finite-difference time-domain(FDTD) computing time, several methods are proposed to convert the time domain FDTD output into frequency domain. The Padé approximation with Baker's algorithm and the program are introduced to simulate photonic crystal structures. For a simple pole system with frequency 160THz and quality factor of 5000,the intensity spectrum obtained by the Padé approximation from a 28-item sequence output is more exact than that obtained by fast Fourier transformation from a 220-item sequence output. The mode frequencies and quality factors are calculated at different wave vectors for the photonic crystal slab from a much shorter FDTD output than that required by the FFT method,and then the band diagrams are obatined. In addition,mode frequencies and Q-factors are calculated for photonic crystal microcavity.关键词
光波导/光子禁带/光子晶体/微腔/有限时域差分法Key words
optical waveguides/photonic bandgap/photonic crystal/microcavity/finite-difference time-domain分类
信息技术与安全科学引用本文复制引用
黄永箴,陈沁,国伟华,于丽娟..Padé近似在光子晶体模拟中的应用[J].半导体学报,2005,26(7):1281-1286,6.基金项目
国家杰出青年科学基金(批准号:60225011)和国家高技术研究发展计划(批准号:2003AA311070)资助项目 （批准号:60225011）
