Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/44026
標題: Finite-difference frequency-domain analysis of 2-D photonic crystals with curved dielectric interfaces
作者: Chiang, Y.C.
江衍忠
Chiou, Y.P.
Chang, H.C.
關鍵字: electromagnetic propagation
finite-difference methods
frequency-domain
analysis
photonic crystals
step-index waveguides
optical wave-guides
band-structure
index profiles
existence
gap
期刊/報告no:: Journal of Lightwave Technology, Volume 26, Issue 5-8, Page(s) 971-976.
摘要: An improved finite-difference frequency-domain method based on Taylor series expansion, local coordinate transformation, and boundary condition matching is developed for analyzing the band diagrams of 2-D photonic crystals. This newly proposed scheme can deal with piecewise homogeneous structures with curved dielectric interfaces. It also shows much better performance in modeling structures of highly index contrast ratio. We have verified this improved scheme with frequently-used plane-wave expansion method through the calculation of the band diagrams of a 2-D photonic crystal with square lattice. We also compare the scheme with the staircase approximation. We further improve the convergence behavior by adopting high-order terms. The result of this adopting is also demonstrated.
URI: http://hdl.handle.net/11455/44026
ISSN: 0733-8724
文章連結: http://dx.doi.org/10.1109/jlt.2007.916499
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