[1] [1] E Betzig, J K Trautman. Near-field optics: microscopy, spectroscopy, and surface modification beyond the diffraction limit [J]. Science, 1992, 257(5067): 189-195.

[2] [2] E Ozbay. Plasmonics: Merging photonics and electronics at nanoscale dimensions [J]. Science, 2006, 311(5758): 189-193.

[3] [3] A Ksendzov, Y Lin. Integrated optics ring-resonator sensors for protein detection [J]. Opt Lett, 2005, 30(24): 3344-3346.

[4] [4] K Sakoda. Optical Properties of Photonic Crystals [M]. New York: Springer, 2004.

[5] [5] Y F Xiao, C L Zou, Y Li, et al.. Asymmetric resonant cavities and their applications in optics and photonics: a review [J]. Front Optoelectron China, 2010, 3(2): 109-124.

[6] [6] Shu Fangjie, Yang Qifan. Research progress of asymmetric microcavity [J]. Laser & Optoelectronics Progress, 2012, 49(6): 060006.

[7] [7] Zou Changling, Dong Chunhua, Cui Jinming, et al.. Whispering gallery mode optical microresonators: fundamentals and applications [J]. Sci Sin-Phys Mech Astron 2012, 42(11): 1155-1175.

[8] [8] J Yao, Z Liu, Y Liu, et al.. Optical negative refraction in bulk metamaterials of nanowires [J]. Science, 2008, 321(5891): 930.

[9] [9] K Yee. Numerical solution of initial boundary value problems involving Maxwell′s equations in isotropic media [J]. IEEE Trans Antennas Propag, 1966, 14(3): 302-307.

[10] [10] O C Zienkiewicz, R L Taylor, J Z Zhu. The Finite Element Method: Its Basis and Fundamentals [M]. London: Butterworth-Heinemann, 2005.

[11] [11] Lu Qijing, Wu Genzhu, Chen Daru, et al.. Optimal design and application of surface plasmon polaritions microdisk [J]. Acta Optica Sinica, 2012, 32(7): 0714002.

[12] [12] J Wiersig. Boundary element method for resonances in dielectric microcavities [J]. J Opt A: Pure Appl Opt, 2003, 5(1): 53-60.

[13] [13] J J Xiao, C T Chan. Calculation of the optical force on an infinite cylinder with arbitrary cross section by the boundary element method [J]. J Opt Soc Am B, 2008, 25(9): 1553-1561.

[14] [14] F J Shu, C L Zou, F W Sun. Dynamic process of free space excitation of asymmetric resonant microcavity [J]. J Lightwave Technol, 2013, 31(12): 1884-1889.

[15] [15] H H Zheng, J J Xiao, Y Lai, et al.. Exterior optical cloaking and illusions by using active sources: a boundary element perspective [J]. Phys Rev B, 2010, 81(19): 195116.

[16] [16] J Elisee, M Bonnet, S Arridge. Accelerated boundary element method for diffuse optical imaging [J]. Opt Lett, 2011, 36(20): 4101-4103.

[17] [17] C L Zou, Y Yang, C H Dong, et al.. Accurately calculating high quality factor of whispering-gallery modes with boundary element method [J]. J Opt Soc Am B, 2009, 26(11): 2050-2053.

[18] [18] C L Zou, H G L Schwefel, F W Sun, et al.. Quick root searching method for resonances of dielectric optical microcavities with the boundary element method [J]. Opt Express, 2011, 19(17): 15669-15678.