Collection Of theses on high power laser and plasma physics, 2007, 5 (1): 159, Published Online: Sep. 18, 2008  

Low-pass spatial filtering using a two-dimensional self-collimating photonic crystal

Author Affiliations
1 School of Computer and Communication, Hu'nan University, Changsha 410082
2 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Abstract
Different from previous focusing on subwavelength imaging in the near field, we outline another potentially useful application of the self-collimating photonic crystal -- low-pass spatial filtering. A two-dimensional square-lattice photonic crystal is taken as an example and the low-pass spatial filtering is demonstrated by the dispersion analysis and numerical simulations. The high-spatial-frequency components, whose incident angles exceed a critical value, are reflected totally because no Bloch modes of the photonic crystal can be excited. However, the low-spatial-frequency components are coupled to the self-collimating modes and permeate the photonic crystal with high transmissivity.

Zhixiang Tang, Dianyuan Fan, Shuangchun Wen, Yunxia Ye, Chujun Zhao. Low-pass spatial filtering using a two-dimensional self-collimating photonic crystal[J]. Collection Of theses on high power laser and plasma physics, 2007, 5(1): 159.

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