[1] Ozbay E. Plasmonics: Merging photonics and electronics at nanoscale dimensions [J]. Science, 2006, 311: 189-193.
[2] Gramotnev D K, Bozhevolnyi S I. Plasmonics beyond the diffraction limit [J]. Nat. Photonics, 2010, 4: 83-91.
[3] Ebbesen T W, Lezec H J, et al. Extraordinary optical transmission through sub-wavelength hole arrays [J]. Nature, 1998, 391: 667-669.
[5] Lin J, Mueller J P B, et al. Polarization-controlled tunable directional coupling of surface plasmon polaritons [J]. Science, 2013, 340: 331-334.
[6] Chen J J, Li Z, et al. Efficient unidirectional generation of surface plasmon polaritons with asymmetric single-nanoslit [J]. Appl. Phys. Lett., 2010, 97: 041113.
[7] Chen J J, Li Z, et al. Broadband unidirectional generation of surface plasmon polaritons with dielectric-film-coated asymmetric single-slit [J]. Opt. Expr., 2011, 19: 26463-26469.
[8] Liu H T, Lalanne P. Microscopic theory of the extraordinary optical transmission [J]. Nature, 2008, 452: 728-731.
[9] Chen J J, Li Z, et al. Ultracompact surface-plasmon-polariton splitter based on modulations of quasicylindrical waves to the total field [J]. J. Appl. Phys., 2011, 109: 073102.
[10] Zhang X, Li Z, et al. A dichroic surface-plasmon-polariton splitter based on an asymmetric T-shape nanoslit [J]. Opt. Expr., 2013, 21: 14548-14554.
[11] Lee B, Kim S, et al. The use of plasmonics in light beaming and focusing [J]. Prog. Quant. Electron., 2010, 34: 47-87.
[12] Chen J J, et al. Highly efficient nanofocusing based on a T-shape micro-slit surrounded with multi-slits [J]. Opt. Expr., 2012, 20: 17734-17740.
[13] Wu G, Chen J J, et al. Highly efficient nanofocusing in a single step-like microslit [J]. Opt. Lett., 2013, 38: 3776-3779.
[14] Chen J J, Li Z, et al. Highly efficient all-optical control of surface-plasmon-polariton generation based on a compact asymmetric single slit [J]. Nano. Lett., 2011, 11: 2933-2937.
[15] Chen J J, Li Z, et al. Efficient all-optical molecule-plasmon modulation based on T-shape single slit [J]. Plasmonics, 2013, 8: 233-237.
[16] Chen J J, Li Z, et al. Submicron bidirectional all-optical plasmonic switches [J]. Sci. Rep., 2013, 3: 1451.