Band Gaps of Two-Dimensional Square-Lattice Photonic Crystal with Button-Shaped Dielectric Rods

S.X. Du; X. D. He; B. Liu; S. J. Li; Z.M. Zhang; S. Li

doi:10.4028/www.scientific.net/AMR.216.285

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 216Band Gaps of Two-Dimensional Square-Lattice...

Band Gaps of Two-Dimensional Square-Lattice Photonic Crystal with Button-Shaped Dielectric Rods

Abstract:

In this paper, a new structure of two-dimensional (2D) square-lattice photonic crystal (SLPC) with button-shaped dielectric rods (BSDRs) is designed, and the properties of band gaps are analyzed by Plane Wave Expansion Method (PWM). The optimal samples that possess the width of absolute band gap are obtained by scanning the three parameters: the radius of large circular R in button mark, the ratio of the radius of small circular to the radius of large circular r/R, and the rotating angle of button mark Ө. It is shown that when r/R=0.485, R=0.406um, and Ө =75⁰, the largest absolute band gap of 0.0406 (ωa/2πc) exists for normalized frequencies in the range 0.7501 to 0.7910 (ωa/2πc). Besides，we can get at most five absolute band gaps when r/R=0.485, R=0.406um, and Ө =60⁰.

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Periodical:

Advanced Materials Research (Volume 216)

Pages:

285-289

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.216.285

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Online since:

March 2011

Authors:

S.X. Du, X. D. He, B. Liu, S. J. Li, Z.M. Zhang, S. Li

Keywords:

Absolute Band Gap, Button-Shaped Dielectric Rods, Square Lattice

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