.Transmission spectra of one-dimensional photonic crystals including negative-refractive-index media[J].Optoelectronics Letters,2005,1(3):201-204 |
Transmission spectra of one-dimensional photonic crystals including negative-refractive-index media |
SHEN Xiao-ming CHEN Xian-feng JIANG Mei-ping SHI Du-fang |
[1]Department of information science, Jiangsu Polytechnic University, Changzhou 213016, China [2]Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China |
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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