[1] [1] Pilla P, Manzillo P F, Malachov V, et al. Opt. Express, 2009, 17(22): 20039.

[2] [2] Chen X, Zhang L, Zhou K E, et al. Opt. Lett., 2007, 32(17): 2541.

[3] [3] Yang J, Sandhu P, Liang W, et al. Quantum Electron, 2007, 13(6): 1691.

[4] [4] He Z H, Tian F, Zhu Y N, et al. Biosensors and Bioelectronics, 2011, 26: 4774.

[5] [5] Town G E, Yuan W, McCosker R, et al. Opt. Lett., 2010, 35(6): 856.

[6] [6] Litchinitser N M, Poliakov E. Appl. Phys., 2005, B81(2): 347.

[7] [7] Hassani A, Skorobogatiy M. Opt. Express, 2006, 14(24): 11616.

[8] [8] Wang Z, Taru T, Birks T A, et al. Opt. Express, 2007, 15(8): 4795.

[9] [9] Rindorf L, Jensen J B, Dufva M, et al. Opt. Express, 2006, 14(18): 8224.

[10] [10] Ott J R, Heuck M, Agger C, et al. Opt. Express, 2009, 16(25): 20834.

[11] [11] Wu D K C, Kuhlmey B T, Eggleton B J. Opt. Lett., 2009, 34(3): 322.

[12] [12] Sun B, Chen M Y, Zhang Y K, et al. Opt. Express, 2011, 19(5): 4091.