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Proceedings Paper

Investigation of self-collimation frequencies in 2-D photonic crystals
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Paper Abstract

The self-collimation frequencies (SCFs) in two-dimensional photonic crystals (2-D PhC) have been investigated systematically by the plane-wave expansion method. In the wave-vector space, the square-lattice 2-D PhCs have some square-shaped equifrequency contours (EFCs) both for TE modes and for TM modes. Narrow-beam lights with these frequencies can propagate in the directions normal to the flat borders of the EFCs without any significant broadening, which is known as self-collimation effect. We consider the 2-D PhCs consisting of a square lattice of air cylinders in a dielectric material and the 2-D PhCs consisting of a square lattice of dielectric cylinders in air respectively. Calculation results show how SCFs of TM and TE modes change with the radius of cylinders and the refractive index of the material. These results can be applied to designing the PhC devices based on self-collimation effect.

Paper Details

Date Published: 19 November 2008
PDF: 7 pages
Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71352Y (19 November 2008); doi: 10.1117/12.799460
Show Author Affiliations
Guiming Lin, Minjiang Univ. (China)
Xiyao Chen, Minjiang Univ. (China)
Yufei Wang, Longyan Univ. (China)
Bo Ni, Fujian Normal Univ. (China)
Junzhen Jiang, Fujian Normal Univ. (China)
Yishen Qiu, Fujian Normal Univ. (China)

Published in SPIE Proceedings Vol. 7135:
Optoelectronic Materials and Devices III
Yi Luo; Jens Buus; Fumio Koyama; Yu-Hwa Lo, Editor(s)

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