Propagation characteristics of two-dimensional photonic crystals in the terahertz range |
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| Authors: | H Liu J Yao D Xu P Wang |
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| Institution: | (1) Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin, 300072, P.R. China;(2) Key Laboratory of Optoelectric Information Science and Technology, Ministry of Education, Tianjin University, Tianjin, 300072, P.R. China |
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| Abstract: | Based on the plane wave expansion method, the complete band gaps of two-dimensional terahertz photonic crystals with typical
structures are optimized through varying structural parameters. During our calculation, two kinds of lattice structures that
are very promising for the materials of terahertz components are found and some interesting phenomena that were not reported
in the former papers are also presented. Using the finite difference time domain method, we simulated the electromagnetic
field distribution of THz waves in a PC splitter. And by the plane wave expansion method, we achieved the dispersion relation
and defect modes in a rotated PC waveguide. These results provide a useful guide and a theoretical basis for the developments
of THz functional components.
PACS 42.72.Ai; 42.70.Qs |
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