[1] BOZHEVOLNYI S I, VOLKOV V S, DEVAUX E, et al. Channel plasmon subwavelength waveguide components including interferometers and ring resonators［J］.Nature, 2006, 440: 508-511.

[2] FANG Y, LI Z, HUANG Y, et al. Branched silver nanowires as controllable plasmon routers［J］.Nano Letters, 2010, 10(5): 1950-1954.

[3] NEUTENS P, DORPE P V, VLAMINCK I D, et al. Electrical detection of confined gap plasmons in metal-insulator-metal waveguides［J］.Nature Photonics, 2009, 3(5): 283-286.

[4] LIN C I, GAYLORD T K. Loss measurement of plasmonic modes in planar metal-insulator-metal waveguides by an attenuated total reflection method［J］.Optics Letters, 2010, 35(22): 3814-3816.

[5] LIU J Q, WANG L L,HE M D, et al.A wide bandgapplasmonic Bragg reflector［J］. Optics Express, 2008, 16(7): 4888-4894.

[6] ZHONG X L. A narrow-band subwavelength plasmonic waveguide filter with metal-insulator-metal braggreflector［J］.Acta Photonica Sinica, 2011, 40(4): 537-541.

[7] TIAN M, LU P, CHEN L, et al. All-optical switching in MIM waveguide resonator with an outer portion smooth bend structure containing nonlinear optical materials［J］. Optics Communications, 2012, 285(21-22): 4562-4566.

[8] ZHANG Z Y, WU B J, WEN F,et al. Research on polarization dependent loss of micro ring resonator based optical switches［J］. Acta Photonica Sinica, 2015, 44(7): 0713002.

[9] WANG L, WANG L L, ZENG Y P, et al. Trapping of surface-plasmon polaritons in a subwavelength cut［J］. Optics Communications, 2011, 284(1): 153-155.

[10] WANG G X, LU H, LIU X M. Trapping of surface plasmon waves in graded grating waveguide system［J］. Appllied Physics Letters, 2012, 101(1): 013111-013113.

[11] CHEN Z, CHEN J J, YU L, et al. Sharp trapped resonances by exciting the anti-symmetric waveguide mode in a metal-insulator-metal resonator［J］. Plasmonics, 2015, 10(1): 131-137.

[12] LIN X S, HUANG X G. Tooth-shaped plasmonic waveguide filters with nanometericsizes［J］. Optics Letters, 2008, 33(23): 2874-2876.

[13] WANG L, WANG L L, ZENG Y P, et al. A triangular shaped channel MIM waveguide filter［J］.Journal of Modern Optics, 2012, 59(19): 1686-1689.

[14] WEN J H, ZHANG Y, YANG Y B,et al. Photonic crystal tunable optical filter based on air defect layer［J］. Acta Photonica Sinica, 2015, 44(8): 0823001.

[15] LEE T W, LEE D E, KWON S H. Dual-function metal-insulator-metal plasmonicoptical filter［J］. IEEE Photonics Journal, 2015, 7(1): 4800108.

[16] PANG S F, QU S X, ZHANG Y Y,et al. Filter characteristic research of MIM waveguide based on L shaped resonator［J］. Acta Optica Sinica, 2015, 35(6): 0623001.

[17] HU FF, YI H X, ZHOU Z P. Wavelength demultiplexing structure based on arrayed plasmonic slot cavities［J］. Optics Letters, 2011, 36(8): 1500-1502.

[18] WANG G X, LU H, LIU X M, et al. Tunable multi-channel wavelength demultiplexer based on MIM plasmonicnanodisk resonators at telecommunication regime［J］. Optics Express, 2011, 19(4): 3513-3518.

[19] LU F, WANG Z H, LI K, et al. A plasmonictriple-wavelength demultiplexingstructure based on a MIM waveguide with side-coupled nanodiskcavities［J］. IEEE Transactions on Nanotechnology, 2013, 12(6): 1185-1190.

[20] LIU H Q, GAO Y X, ZHU B F, et al. A T-shaped high resolution plasmonicdemultiplexer based on perturbations of two nanoresonators［J］. Optics Communication, 2015, 334: 164-169.

[21] PALIK E D. Handbook of optical constants of solids［M］. New York: Academic press, 1998.

[22] ECONOMOU E N. Surface plasmons in thin films［J］. Physics Review, 1969, 182(2): 539-554.