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.
(Spectrum and frequency analyzers and filters; acoustical and electrical oscillographs; photoacoustic spectrometers; acoustical delay lines and resonators)
Cite this article:
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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