Chinese Optics Letters, 2010, 8 (6): 584, Published Online: Jun. 22, 2010
Active modulation of plasmonic signal with a subwavelength metal/nonlinear dielectric material/metal structure 
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表面等离子体 金属-非线性介质-金属结构 120.4570 Optical design of instruments 190.3270 Kerr effect 240.6680 Surface plasmons
Abstract
Light propagation through a metal/nonlinear dielectric material/metal (M-NL-M) structure is numerically studied. The design parameters of the M-NL-M structure are found with the waveguide theory so that the structure only supports the symmetric surface plasmon polaritons (SPP(0)) mode and the antisymmetric surface plasmon polaritons (SPP(1)) mode. The coupling between the two modes within the M-NL-M structure is exploited. Through controlling the propagation constants of the two modes with the intensity-dependent dielectric constant of the nonlinear Kerr material, an effective all-optical control of plasmonic signal modulator can be realized with this M-NL-M structure.
Xiaolei Wang, Pei Wang, Chunchong Chen, Junxue Chen, Yonghua Lu, Hai Ming, Qiwen Zhan. Active modulation of plasmonic signal with a subwavelength metal/nonlinear dielectric material/metal structure[J]. Chinese Optics Letters, 2010, 8(6): 584.
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