Light propagation properties of two-dimensional photonic crystal channel filters with elliptical micro-cavities

doi:10.1088/1674-1056/20/10/104207

Abstract Light propagation through a channel filter based on two-dimensional photonic crystals with elliptical-rod defects is studied by the finite-difference time-domain method. Shape alteration of the defects from the usual circle to an ellipse offers a powerful approach to engineer the resonant frequency of channel filters. It is found that the resonant frequency can be flexibly adjusted by just changing the orientation angle of the elliptical defects. The sensitivity of the resonant wavelength to the alteration of the oval rods' shape is also studied. This kind of multi-channel filter is very suitable for systems requiring a large number of output channel filters.

Keywords: photonic crystal defect multi-channel filter micro-cavity

Received: 29 December 2010
Revised: 18 May 2011
Accepted manuscript online:

PACS:	42.70.Qs	(Photonic bandgap materials)
	78.20.Ci	(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

Fund: Project supported by the Research Foundation of the State Ethnic Affairs Commission of People’s Republic of China (Grant No. 10ZY05), the National Natural Science Foundation of China (Grant Nos. 10904176 and 11004169), and the “985 Project” and the “211 Project” of the Ministry of Education of China.

Cite this article:

Feng Shuai(冯帅) and Wang Yi-Quan(王义全) Light propagation properties of two-dimensional photonic crystal channel filters with elliptical micro-cavities 2011 Chin. Phys. B 20 104207

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Light propagation properties of two-dimensional photonic crystal channel filters with elliptical micro-cavities

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