Asymmetric light propagation based on semi-circular photonic crystals

doi:10.1088/1674-1056/23/3/034215

Abstract A new structure based on a semi-circular photonic crystal is proposed to achieve asymmetric light propagation. The semi-circular photonic crystal structure proposed in this paper is a deformation of a two-dimensional conventional square photonic crystal. Through the directional bandgap of the semi-circular photonic crystal, the light from one direction can transfer to the other side, but the light from the opposite direction cannot. A high contrast ratio is obtained by designing the constitutive parameters of the photonic crystal and choosing the suitable light frequency. This structure promises a significant potential in optical integration and other areas.

Keywords: semi-circular photonic crystal asymmetric light propagation optical integration

Received: 27 April 2013
Revised: 08 August 2013
Accepted manuscript online:

PACS:	42.82.-m	(Integrated optics)
	42.82.Bq	(Design and performance testing of integrated-optical systems)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 60907005, 10804063, and 51102148), the Natural Science Foundation of Shandong Province, China (Grant Nos. ZR2011FQ011 and ZR2010AM025), the Natural Science and Technology Program of Shandong Province, China (Grant No. 2011GGH20119), the Research Award Fund for Outstanding Young Scientists of Shandong Province, China (Grant No. BS2011DX023), the Science & Technology Bureau of Shenzhen City, China (Grant No. 0014632063100426032), and the Independent Innovation Foundation of Shandong University, China (Grant No. 2010TB019).

Corresponding Authors: Yang Xiu-Lun
E-mail: xlyang@sdu.edu.cn

Cite this article:

Wang Lin-Hui (王林辉), Yang Xiu-Lun (杨修伦), Meng Xiang-Feng (孟祥锋), Wang Yu-Rong (王玉荣), Chen Shou-Xiang (陈寿翔), Huang Zhe (黄哲), Dong Guo-Yan (董国艳) Asymmetric light propagation based on semi-circular photonic crystals 2014 Chin. Phys. B 23 034215

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Asymmetric light propagation based on semi-circular photonic crystals

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