论文标题
一个可靠，有效的模型，用于将表面等离子体偏振子传输到金属 - 绝缘体金属孔径上
A robust and efficient model for transmission of surface plasmon polaritons onto metal-insulator-metal apertures
论文作者
论文摘要
一个简单而精确的模型，用于在有限的金属绝绝量 - 金属（MIM）波导到孔径侧面传输表面等离子体偏振子（SPP），并证明是比可用模型更准确的。它就像在孔的平面上使用磁电流密度一样简单，其值由SPPS定义，并通过等效原理在波导中具有任何数量的模式。然后，从孔径两侧的两侧产生的SPP从等效电流密度和绿色功能的卷积积分中提取。结果，该模型将MIM中SPP的透射系数准确，高效地提供到了光圈的侧壁；不仅用于具有单个隔离层的对称MIM，而且对于具有多层绝缘材料的非对称层。结果与通过FDTD方法获得的结果非常吻合，并且比文献中可用于多种光圈宽度的其他近似值更好。
A simple yet accurate model for the transmission of surface plasmon polaritons (SPPs) in a finite metal-insulator-metal (MIM) waveguide to the sides of the apertures is proposed and demonstrated to be more accurate than available models. It is as simple as using a magnetic current density across the plane of the aperture whose value is defined by SPPs with any number of modes in the waveguide through the equivalence principle. Then, the generated SPPs on the both sides of the aperture are extracted from the convolution integral of the equivalent current density and Green's function. As a result, the model provides the transmission coefficients of SPPs in the MIM to the side walls of the aperture accurately and efficiently; not only for symmetric MIMs with a single isolating layer but also for non-symmetric ones with multi-layered insulating materials. The results are in very good agreement with those obtained by the FDTD method and better than the other approximations available in literature for a wide range of aperture widths.
