[1] Barnes W L, Dereux A, Ebbesen T W. Surface plasmon subwavelength optics［J］. Nature, 2003, 424(6950): 824-825.

[2] Berini P. Plasmon-polariton waves guided by thin lossy metal films of finite width: Bound modes of asymmetric structures［J］. Physical Review B, 2000, 61(15): 10484-10503.

[3] Berini P. Plasmon-polariton modes guided by a metal film of finite width［J］. Optics Letters, 1999, 24(15): 1011-1013.

[4] Berini P. Plasmon-polariton modes guided by a metal film of finite width bounded by different dielectrics［J］. Optics Express, 2000, 7(10): 329-335.

[5] Pile D F P, Ogawa T, Gramotnev D K. Theoretical and experimental investigation of strongly localized plasmons on triangular metal wedges for subwavelength waveguiding［J］. Applied Physics Letters, 2005, 87(6): 210-212.

[6] Boltasseva A,Volkov V S, Nielsen R B. Triangular metal wedges for subwavelength plasmon-polariton guiding at telecom wavelengths［J］. Optics Express, 2008, 16(8): 5252-5254.

[7] Pile D F P, Gramotnev D K. Channel plasmon-polariton in a triangular groove on a metal surface［J］. Optics Letters, 2004, 29(10): 1069-1071.

[8] Bozhevolnyi S I. Effective-index modeling of channel plasmon polaritons［J］. Optics Express, 2006, 14(20): 9467-9476.

[9] Holmgaard T, Bozhevolnyi S I. Theoretical analysis of dielectric-loaded surface plasmon-polariton waveguides［J］. Physical Review B, 2007, 75(24): 245405 .

[10] Holmgaard T, Gosciniak J, Bozhevolnyi S I. Long-range dielectric-loaded surface plasmon-polariton waveguides［J］. Optics Express, 2010, 18(22): 23009-23015.

[11] Jablan M, Buljan H, Soljacˇic＇ M. Plasmonics in graphene at infrared frequencies［J］. Physical Review B, 2009, 80(24): 245435 .

[12] Ooi K J A,Chu H S, Ang L K. Mid-infrared active graphene nanoribbon plasmonic waveguide devices［J］. Journal of the Optical Society of America B, 2013, 30(12): 3111-3116.

[13] Mikhailov S A, Ziegler K. New electromagnetic mode in graphene［J］. Physical Review Letters, 2007, 99(1): 016803.

[14] Sun Y, Bian Y, Zhao X. Low-loss graphene plasmonic waveguide based on a high-index dielectric wedge for tight optical confinement［C］. Lasers and Electro-Optics Frontiers in Optics, 2013: 14381182.

[15] Geim A K, Novoselov K S. The rise of graphene［J］. Nature Material, 2007, 6: 183-191.

[16] Gosciniak J, Tan D T H. Graphene-based waveguide integrated dielectric-loaded plasmonic electro-absorption modulators［J］. Nanotechnology, 2013, 24(18): 185202.