[1] [1] J B Pendry. Negtive refraction makes a perfect lens [J]. Phys Rev Lett, 2000, 85(18): 3966-3969.

[2] [2] Chen Xuchong, Feng Shuai, Zhang Beibei, et al.. Subwavelength imaging characteristics of the near-infrared silicon-based metallic photonic crystal slabs [J]. Acta Optica Sinica, 2013, 33(1): 0123003.

[3] [3] D Schuring, J J Mock, B J Justice, et al.. Experiment electromagnetic cloak at microwave frequencies [J]. Science, 2006, 314(5801): 977-980.

[4] [4] Zhang Jing, He Ying, Li Chunfang, et al.. Guided modes in a four-layer slab waveguide with the LHM core [J]. Acta Optica Sinica, 2009, 29(10): 2673-2680.

[5] [5] Hou Shanglin, Zhang Shujun, Li Suoping, et al.. Investigation on transmission characteristics of doubly cladding fiber with an inner cladding made of negative refractive-index material [J]. Acta Optica Sinica, 2011, 31(5): 0506004.

[6] [6] J B Pendry. A chiral route to negative refraction [J]. Science, 2004, 306(5700): 1353-1355.

[7] [7] S Tretyakov, A Sihvola, L Jylha. Backward-wave regime and negative refaction in chiral composites [J]. Photonics and Nanostructures, 2005, 3(2-3): 107-115.

[8] [8] Y Svirko, N Zheludev, M Osipov. Layered chiral metallic microstructures with inductive coupling [J]. Appl Phys Lett, 2001, 78(4): 498-450.

[9] [9] E Plum, J Zhou, J Dong, et al.. Metamaterial with negative index due to chirality [J]. Phys Rev B, 2009, 79(3): 035407.

[10] [10] J Zhou, J Dong, B Wang, et al.. Negative refractive index due to chirality [J]. Phys Rev B, 2009, 79 (12): 121104.

[11] [11] J F Dong, J F Zhou, T Koschny, et al.. Bi-layer cross chiral strcture with strong optical activity and negative refractive index [J]. Opt Express, 2009, 17(16): 14172-14179.

[12] [12] Yang Fangqing, Li Jie, Wang Zhan, et al.. Characteristics of the twisted conjugated gammadion chiral strcture [J]. Acta Optica Sinica, 2011, 31(10): 1016002.

[13] [13] J Li, F Q Yang, J F Dong. Design and simulation of L-shaped chiral negative refractive index structure [J]. Prog Electromagn Res, 2011, 116: 395-408.

[14] [14] Z Li, R Zhao, T Koschny, et al.. Chiral metamaterials with negative refractive index based on four “U” split ring resonators [J]. Appl Phys Lett, 2010, 97(8): 081901.

[15] [15] M Decker, R Zhao, C M Soukoulis, et al.. Twisted split-ring-resonator photonic metamaterial with huge optical activity [J]. Opt Lett, 2010, 35(10): 1593-1595.

[16] [16] X Xiong, W Sun, Y Bao, et al.. Construction of a chiral metamaterial with a U-shaped resonator assembly [J]. Phys Rev B, 2010, 81(7): 075119.

[17] [17] E Plum, V A Fedotov, A S Schwanecke, et al.. Giant optical gyrotropy due to electromagnetic coupling [J]. Appl Phys Lett, 2007, 90(22): 223113.

[18] [18] M Decker, M Ruther, C E Kriegler, et al.. Strong optical activity from twisted-cross photonic metamaterials [J]. Opt Lett, 2009, 34(16): 2501-2503.

[19] [19] W Huang, Y Zhang, X Tang, et al.. Optical properties of a planar metamaterial with chiral symmetry breaking [J]. Opt Lett, 2011, 36(17): 3359-3361.

[20] [20] K Song, X P Zhao, Q H Fu, et al.. Wide-angle 90-polarization rotator using chiral metamaterial with negative refractive index [J]. J Electromagn Waves Appl, 2012, 26(14-15): 1967-1976.