Characteristic Impedance Model for Plasmonic Metal Slot Waveguides

被引:23
作者
Ly-Gagnon, Dany-Sebastien [1 ]
Kocabas, Sukru Ekin [1 ]
Miller, David A. B. [1 ]
机构
[1] Stanford Univ, Ginzton Lab, Stanford, CA 94305 USA
关键词
Optical planar waveguide components; photodetectors; plasmons;
D O I
10.1109/JSTQE.2008.917534
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We investigate the transmission properties of a subwavelength plasmonic slot waveguide. We show that the transmission can be accurately calculated using the characteristic impedance of the propagating mode. Using such a model, we show that it is possible to design devices without extensive 3-D Finite-difference time-domain (FDTD) computer simulations. We illustrate the approach with calculations of an asymmetric Fabry-Perot germanium photodetector based on the slot waveguide geometry, showing predicted detector efficiencies as high as 69% despite metallic losses.
引用
收藏
页码:1473 / 1478
页数:6
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