Independently tunable multichannel terahertz filters

doi:10.1088/1674-1056/20/9/094101

Abstract We numerically demonstrate terahertz multichannel filters with independently tunable defect modes based on fractal photonic crystals. Single defect and multiple defects models are proposed to fabricate the multichannel terahertz filters. The facts that the wave functions of the defect states do not overlap and their bases are orthogonal lead to the independency among the defect modes. The simulated results theoretically provide the principle for fabricating independently tunable multichannel terahertz filters by utilizing one-dimensional photonic crystals with defects.

Keywords: fractal structure photonic crystal terahertz filter defect

Received: 18 March 2011
Revised: 19 April 2011
Accepted manuscript online:

PACS:	41.20.Jb	(Electromagnetic wave propagation; radiowave propagation)
	78.20.Ci	(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
	87.50.U-
	43.58.Kr	(Spectrum and frequency analyzers and filters; acoustical and electrical oscillographs; photoacoustic spectrometers; acoustical delay lines and resonators)

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Zhang Hui-Yun(张会云), Gao Ying(高营), Zhang Yu-Ping(张玉萍), and Wang Shi-Fan(王世范) Independently tunable multichannel terahertz filters 2011 Chin. Phys. B 20 094101

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Independently tunable multichannel terahertz filters

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