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The resonance properties of surface plasmon in the AMM/dielectric/AMM waveguide are theoretically studied by using the finite-difference time-domain technique, where the claddings are anisotropic metamaterial (AMM) . From the dispersion relation, it is found that the AMM/dielectric/AMM waveguide supports TE polarized surface plasmon if AMM is always-cutoff with negative permeability. The wavelength of the surface plasmon becomes shorter when both the thickness of the dielectric core and the magnetic plasma frequency of AMM decrease. For an AMM/dielectric/AMM waveguide with a finite length, a subwavelength plasmon microcavity can be formed by Fabry-Perot resonance caused by the reflection of the guided mode at the entrance and the exit surfaces. At the resonant frequency, the electric field is maximized in the center, the magnetic field is maximized at the dielectric core entrance and exit, and the electromagnetic energy is strongly concentrated around the dielectric core. Such electromagnetic properties will have potential applications in the tunable subwavelength microcavity with strongly localized field and in the cavity quantum electrodynamics.
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Keywords:
- metamaterial waveguide /
- anisotropic /
- surface plasmon /
- Fabry-Perot resonance
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[42] [43] Dionne J A, Lezec H J, Atwater H A 2006 Nano Lett. 6 1928
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[1] Veselago V G 1968 Soviet Physics Usp. 10 509
[2] [3] Sun Y Z, Ran L X, Wang D X, Wang W G, Chen Q L 2010 Acta Phys Sin. 59 4602 (in Chinese) [孙永志, 冉立新, 王东兴, 王伟光, 陈秋林 2010 59 4602]
[4] [5] Alu` A, Engheta N 2003 IEEE Trans. Antennas Propagat. 51 2558
[6] Zhang L W, Wang Y Z, He L, Xu J P 2010 Acta Phys Sin 59 6106 (in Chinese) [张利伟, 王佑贞, 赫丽, 许静平2010 59 6106]
[7] [8] Zhou L, Wen W J, Chan C T, Shen P 2005 Phys. Rev. Lett. 94 243905
[9] [10] [11] Xiang Y J, Dai X Y, We S C 2007 J. Opt. Soc. Am. B 24 2033
[12] [13] Marques R, Medina F, Rafii-EI-Idrissi R 2002 Phys. Rev. B 65 144440
[14] Smith D R, Schultz S 2003 Phys. Rev. Lett. 90 077405
[15] [16] [17] Schurig D, Smith D R 2003 Appl. Phys. Lett. 82 2215
[18] Fang A, Koschny T, Soukoulis C M 2009 Phys. Rev. B 79 245127
[19] [20] Liu H Y, Lv Q, Luo H L, Wen S C 2010 Acta Phys Sin. 59 256 (in Chinese) [刘虹遥, 吕强, 罗海陆, 文双春 2010 59 256]
[21] [22] [23] Feng Y J, Teng X H, Wnag Z B, Zhao J M, Jiang T 2009 J. Appl. Phys. 105 034912
[24] [25] Jiang T, Zhao J M, Feng Y J 2009 Opt. Express 17 170
[26] Ruppin R 2001 J. Phys.: Condens. Matter 13 1811
[27] [28] Miyazaki H T, Kurokawa Y 2006 Phys. Rev. Lett. 96 097401
[29] [30] [31] Kurokawa Y, Miyazaki H T 2007 Phys. Rev. B 75 035411
[32] Park J, Kim K Y, Lee I M, Na H, Lee S Y, Lee B 2010 Opt. Express 18 598
[33] [34] [35] Stegeman G I, Wallis R F, Maradudin A A 1983 Opt. Lett. 8 386
[36] Li M, Wen Z C, Fu J X, Fang X, Dai Y M, Liu R J, Han X F, Qiu X G 2009 J. Phys. D: Appl. Phys. 42 115420
[37] [38] Helgert C, Menzel C, Rockstuhl C, Pshenay-Severin E, Kley E B, Chipouline A, Tunnermann A, Lederer F, Pertsch T 2009 Opt. Lett. 34 704
[39] [40] [41] Feng Y J, Teng X H, Chen Y, Jiang T 2005 Phys. Rev. B 72 245107
[42] [43] Dionne J A, Lezec H J, Atwater H A 2006 Nano Lett. 6 1928
[44] [45] Gordon R 2006 Phys. Rev. B 73 153405
[46] [47] Zhang L W, Zhang Y W, Zhao Y H, Zhai J W, Li L X 2010 Opt. Express 18 25052
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