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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 and He Sai-Ling1,2

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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 perturbation.


PACS

42.70.Qs Photonic bandgap materials

78.20.Bh Theory, models, and numerical simulation

Subjects

Condensed matter: electrical, magnetic and optical

Optics, quantum optics and lasers

Dates

Issue 1 (January 2002)

Received 6 August 2001



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