Realization of absolute negative refraction index by a photonic crystal using anisotropic dielectric material |
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| Authors: | Yuntuan Fang Zhengbiao Ouyang |
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| Institution: | [1]Department of Physics, Zhenjiang Watercraft College, Zhenjiang 212003; [2]THz- Technology Research Center of Shenzhen University, Shenzhen 518060; [3]Shenzhen Key Laboratory of Micro-Nano-Photonic Information Technology, Shenzhen 518060; [4]College of Electronic Science and Technology of Shenzhen University, Shenzhen 518060 |
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| Abstract: | A method to realize absolute negative refraction index -1 with a two-dimensional (2D) photonic crystal is presented by introducing dielectric anisotropy in the photonic crystal material. The band structures of E-polarization mode and H-polarization mode can be adjusted by changing the parameters of materials. Thus the two modes with different polarizations have the same negative refraction index -1 for the same frequency. The results are demonstrated by numerical simulation based on the finite-difference time-domain (FDTD) method. |
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| Keywords: | materials dielectric anisotropic photonic crystal negative refraction index absolute FDTD results numerical simulation based modes different frequency band structures parameters anisotropy method |
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