Presentation	2013-10-24 BOR/2-D Hybrid FDTD method for the analysis of circular resonant cavities having azimuthal periodic structures Yasuo OHTERA, Haruka HIROSE, Hirohito YAMADA,
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Abstract(in English)	In this paper we report the development of BOR/Yee-grid composite FDTD(Finite-Difference Time-Domain) method. Our main motivation was to analyze a class of circular resonant cavities having sub-wavelength periodic structures in the azimuthal direction. In a cavity whose refractive index is uniform in the vicinity of the center, its modal field distribution can be well approximated as e^. By making use of this nature we employed the BOR formulation for the calculation near the center, and ordinary 2-D or 3-D Yee's formulation for the region where the effect of periodic structure is significant. At the interface between the BOR/Yee's grid regions, both field data are mutually used. The example of calculations for a disk resonator with periodic holes and sidewall gratings will be shown.
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Keyword(in English)	FDTD method / Body of Revolution (BOR) / Circular resonator / Disk resonator / sub-grid method
Paper #	EMCJ2013-72,MW2013-112,EST2013-64
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Committee	EST
Conference Date	2013/10/17(1days)
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Registration To	Electronic Simulation Technology (EST)
Language	JPN
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Title (in English)	BOR/2-D Hybrid FDTD method for the analysis of circular resonant cavities having azimuthal periodic structures
Sub Title (in English)
Keyword(1)	FDTD method
Keyword(2)	Body of Revolution (BOR)
Keyword(3)	Circular resonator
Keyword(4)	Disk resonator
Keyword(5)	sub-grid method
1st Author's Name	Yasuo OHTERA
1st Author's Affiliation	Graduate School of Engineering, Tohoku University()
2nd Author's Name	Haruka HIROSE
2nd Author's Affiliation	Graduate School of Engineering, Tohoku University
3rd Author's Name	Hirohito YAMADA
3rd Author's Affiliation	Graduate School of Engineering, Tohoku University
Date	2013-10-24
Paper #	EMCJ2013-72,MW2013-112,EST2013-64
Volume (vol)	vol.113
Number (no)	261
Page	pp.pp.-
#Pages	5
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