Design of unidirectional subwavelength slit coupler for THz surface plasmons

Qiaoqiang Gan, Zhan Fu, Yujie J. Ding, Filbert J. Bartoli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


In this paper, we demonstrate a unidirectional subwavelength slit coupler at THz frequencies by using two-dimensional finite difference time domain (FDTD) modeling. The near-field light emitted from the narrow slit serves as a subwavelength-scaled excitation source. By placing a particular grating structure on one side of the slit, the light could be guided in only one direction. This unidirectional subwavelength slit coupler is amenable to incorporation into optical integrated circuits at THz frequencies. © 2007 IEEE.
Original languageEnglish (US)
Title of host publication2007 International Conference on Numerical Simulation of Semiconductor Optoelectronic Devices - NUSOD'07
Number of pages2
StatePublished - Dec 1 2007
Externally publishedYes

Bibliographical note

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