Transmission spectra of one-dimensional photonic crystals including negative-refractive-index media |
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Authors: | Xiao-ming Shen Xian-feng Chen Mei-ping Jiang and Du-fang Shi |
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Affiliation: | (1) Department of information science, Jiangsu Polytechnic University, 213016 Changzhou, China;(2) Department of Physics, Huazhong University of Science and Technology, 430074 Wuhan, China |
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Abstract: | We introduce a new model of one-dimensional (1D) photonic crystal composed of alternately arranged RHM and LHM layers with
positive and negative refractive indices respectively, for which the transmission spectra of the model are calculated numerically
with the transfer matrix method, and the bandgap structure and the polarization properties are analyzed. We found that the
introduction of negative refractive index layers (i.e. LHM medium layers) gives rise to some peculiar band—gap structure and
polarization properties as follows. Firstly, the forbidden bands are extremely wide and the transmission bands are very sharp
without oscillation; and secondly, the change of incident angle has different influences on the forbidden bands of TE and
TM modes. For the TM mode, the forbidden band width decreases substantially and finally vanishes, and for the TE mode with
central wavelength, the total reflection happens at any incident angle. |
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Keywords: | CLC number" target="_blank">CLC number O433 5+1 |
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