{"title":"Analysis of a metal disc-type terahertz surface wave splitter using the cylindrical LOD-FDTD method","authors":"J. Shibayama, Masato Itoh, J. Yamauchi, H. Nakano","doi":"10.1109/NUSOD.2016.7546995","DOIUrl":null,"url":null,"abstract":"To efficiently analyze the electromagnetic problems in cylindrical structures, we develop a locally one-dimensional finite-difference time-domain (FDTD) method in cylindrical coordinates. The Sherman-Morrison formula is used to solve a cyclic matrix, and the image theory is introduced to treat a perfect electric conductor. As an application, we analyze a metal disc-type terahertz surface wave splitter. The computation time is reduced to approximately half that of the explicit FDTD method, while maintaining the comparable accuracy.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NUSOD.2016.7546995","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
To efficiently analyze the electromagnetic problems in cylindrical structures, we develop a locally one-dimensional finite-difference time-domain (FDTD) method in cylindrical coordinates. The Sherman-Morrison formula is used to solve a cyclic matrix, and the image theory is introduced to treat a perfect electric conductor. As an application, we analyze a metal disc-type terahertz surface wave splitter. The computation time is reduced to approximately half that of the explicit FDTD method, while maintaining the comparable accuracy.
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