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Band Structure of a Two-Dimensional Photonic Crystal with a
Triangular Lattice of Anisotropic Elliptic Cylinders |
| ZHUANG Fei1,3;WU Liang1;XIAO San-Shui1;HE Sai-Ling1,2 |
| 1Centre for Optical and Electromagnetic Research, State Key Laboratory for Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027
2Department of Electromagnetic Theory, Royal Institute of Technology, S-100 44 Stockholm, Sweden
3Department of Physics, Hangzhou Teacher’s College, Hangzhou 310012
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| Cite this article: |
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ZHUANG Fei, WU Liang, XIAO San-Shui et al 2002 Chin. Phys. Lett. 19 73-75 |
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Abstract The plane-wave expansion method is used to calculate the band structure of a two-dimensional photonic crystal formed by a triangular lattice of anisotropic elliptic cylinders. After optimizing the parameters of the elliptic cylinders, we find a large bandgap (about 0.0449 ωe, ωe = 2πc/a) at high frequencies beside a coexisting large absolute gap (about 0.035 ωe) at low frequencies. Numerical results show that the optimal design is very stable under any parameter pertubation.
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| Keywords:
42.70.Qs
78.20.Bh
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Published: 01 January 2002
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| PACS: |
42.70.Qs
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(Photonic bandgap materials)
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78.20.Bh
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(Theory, models, and numerical simulation)
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