[1] C. Nylander, B. Liedberg, and T. Lind, Sens. Actuators 3, 79 (1982).

[2] B. Liedberg, C. Nylander, and I. Lundstrom, Sens. Actuators 4, 299 (1983).

[3] B. Rothenh¨ausler and W. Knoll, Nature 332, 615 (1988).

[4] J. Homola, S. S. Yee, and G. Gauglitz, Sens. Actuators B 54, 3 (1999).

[5] A. Otto, Z. Physik 216, 398 (1968).

[6] E. Kretschmann and H. Raether, Z. Naturforsch A 23, 2135 (1968).

[7] M. M. B. Vidal, R. Lopez, S. Aleggret, J. AlonsoChamarro, I. Garces, and J. Mateo, Sens. Actuators B 11, 455 (1993).

[8] E. Stenberg, B. Persson, H. Roos, and C. Urbaniczky, J. Colloid. Interface Sci. 143, 513 (1991).

[9] C. M. Wu, Z. C. Jian, S. F. Joe, and L. B. Chang, Sens. Actuators B 92, 133 (2003).

[10] H. P. Ho, W. W. Lam, and S. Y. Wu, Rev. Sci. Instrum. 73, 3534 (2002).

[11] S. G. Nelson, K. S. Johnston, and S. S. Yee, Sens. Actuators B 35, 187 (1996).

[12] S. Shen, T. Liu, and J. H. Guo, Appl. Opt. 37, 1747 (1998).

[13] S. Y. Wu, H. P. Ho, W. C. Law, and C. Lin, Opt. Lett. 29, 2378 (2004).

[14] C. M. Wu and M. C. Pao, Opt. Express 12, 3509 (2004).

[15] J. H. Guo, Z. M. Zhu, and W. M. Deng, Appl. Opt. 38, 6550 (1999).

[16] L. Liu, Y. He, and J. Guo, Proc. SPIE 6047, 60473I (2006).

[17] Z. Sun, Y. He, and J. Guo, Appl. Opt. 46, 3071 (2006).

[18] A. A. Kruchinin and Y. G. Vlasov, Sens. Actuators B 30, 77 (1996).

[19] A. V. Kabashin, V. E. Kochergin, A. A. Beloglazov, and P. I. Nikitin, Biosens. Bioelectron. 13, 1263 (1998).

[20] J. Homola and S. S. Yee, Sens. Actuators B 51, 331 (1998).

[21] H. Raether, Surface Plasmons on Smooth and Rough Surfaces and on Gratings (Springer, Berlin, 1988).