Bidirectional subwavelength slit splitter for THz surface plasmons

被引：61

作者：

Gan, Qiaoqiang ^{[1
]}

Fu, Zhan ^{[1
]}

Ding, Yujie J. ^{[1
]}

Bartoli, Filbert J. ^{[1
]}

机构：

[1] Lehigh Univ, Dept Elect & Comp Engn, Ctr Opt Technol, Bethlehem, PA 18015 USA

来源：

OPTICS EXPRESS | 2007年 / 15卷 / 26期

关键词：

D O I：

10.1364/OE.15.018050

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have conducted a feasibility study of a frequency splitter operating at THz frequencies, based on a bidirectional subwavelength slit simulated using two-dimensional finite difference time domain ( FDTD) techniques. The near-field wave emanating from the narrow slit serves as a subwavelength-scaled excitation source. By placing two optimized grating structures on the opposite sides of the slit, the THz waves at different frequencies are guided in the two desired directions. Confinement of the optical field is illustrated for different surface structures. (c) 2007 Optical Society of America.

引用

页码：18050 / 18055

页数：6

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