[1] W. Barnes, A. Dereux, and T. Ebbesen, Nature 424, 824 (2003).
[2] X. Wang, P. Wang, C. Chen, J. Chen, Y. Lu, H, Ming, and Q. Zhan, Chin. Opt. Lett. 8, 584 (2010).
[3] X. Li, Q. Tan, B. Bai, and G. Jin, Chin. Opt. Lett. 10, 052401 (2012).
[4] G. Veronis and S. Fan, Appl. Phys. Lett. 87, 131102 (2005).
[5] J. Chen, Z. Li, M. Lei, X. Fu, J. Xiao, and Q. Gong, Plasmonics 7, 441 (2012).
[6] G. Wang, H. Lu, X. Liu, D. Mao, and L. Duan, Opt. Express 19, 3513 (2011).
[7] F. Hu, H. Yi, and Z. Zhou, Opt. Lett. 36, 1500 (2011).
[8] Z. Chen, J. Chen, Y. Li, D. Pan, W. Lu, J. Xu, and Q. Sun, IEEE Photon. Technol. Lett. 24, 1366 (2012).
[9] A. A. Reiserer, J. Huang, B. Hecht, and T. Brixner, Opt. Express 18, 11810 (2010).
[10] B. Wang and G. Wang, Opt. Lett. 29, 1992 (2004).
[11] E. Feigenbaum and H. A. Atwater, Phys. Rev. Lett. 104, 147402-1 (2010).
[12] T. Wang, X. Wen, C. Yin, and H. Wang, Opt. Express 17, 24096 (2009).
[13] H. Lu, X. Liu, D. Mao, L. Wang, and Y. Gong, Opt. Express 18, 17922 (2010).
[14] F. Hu, H. Yi, and Z. Zhou, Opt. Express 19, 4848 (2011).
[15] A. Hosseini and Y. Massoud, Appl. Phys. Lett. 90, 181102 (2007).
[16] B. Yun, G. Hu, and Y. Cui, J. Phys. D: Appl. Phys. 43, 385102 (2010).
[17] J. Liu, G. Fang, H. Zhao, Y. Zhang, and S. Liu, J. Phys. D: Appl. Phys. 43, 055103 (2010).
[18] I. Zand, A. Mahigir, T. Pakizeh, and M. S. Abrishamian, Opt. Express 20, 7516 (2012).
[19] X. Lin and X. Huang, Opt. Lett. 33, 2874 (2008).
[20] Y. Matsuzaki, T. Okamoto, M. Haraguchi, M. Fukui, and M. Nakagaki, Opt. Express 16, 16314 (2008).
[21] Z. Han, E. Forsberg, and S. He, IEEE Photon. Technol. Lett. 19, 91 (2007).
[22] B. Min, E. Ostby, V. Sorger, E. Ulin-Avila, L. Yang, X. Zhang, and K. Vahala, Nature 457, 455 (2009).
[23] X. Serey, S. Mandal, and D. Erickson, Nanotechnology 21, 305202 (2010).