Coupled THz Waveguide Utilizing Surface Plasmon Polaritons on Thin Dielectric Slab Sandwiched between Two Corrugated Metallic Claddings
TIAN Dong-Bin, ZHANG Huai-Wu, WEN Qi-Ye, XIE Yun-Song, SONG Yuan-Qiang
State Key Laboratory of Electronic Thin Films and IntegratedDevices, School of Microelectronic and Solid-state Electronic, Universityof Electronic Science and Technology of China, Chengdu 610054
Coupled THz Waveguide Utilizing Surface Plasmon Polaritons on Thin Dielectric Slab Sandwiched between Two Corrugated Metallic Claddings
TIAN Dong-Bin, ZHANG Huai-Wu, WEN Qi-Ye, XIE Yun-Song, SONG Yuan-Qiang
State Key Laboratory of Electronic Thin Films and IntegratedDevices, School of Microelectronic and Solid-state Electronic, Universityof Electronic Science and Technology of China, Chengdu 610054
We present a comprehensive experimental study of terahertz (THz) wave propagation utilizing surface plasmon polaritons (SPPs) on the interfaces of a thin dielectric core layer sandwiched between two corrugated metallic claddings. THz wave impinges on the structured surfaces at normal incidence. Long-lasting oscillation propagation features are observed in the temporal waveform after traveling through the periodic arrays. The enhanced THz transmission can be achieved due to the coupling between incident waves to SPPs at the bottom and top interfaces. The finite element method is used to simulate the field distribution and the transmission mode in the waveguide. The hybrid waveguide with low absorption has great potential applications in THz integrated devices.
We present a comprehensive experimental study of terahertz (THz) wave propagation utilizing surface plasmon polaritons (SPPs) on the interfaces of a thin dielectric core layer sandwiched between two corrugated metallic claddings. THz wave impinges on the structured surfaces at normal incidence. Long-lasting oscillation propagation features are observed in the temporal waveform after traveling through the periodic arrays. The enhanced THz transmission can be achieved due to the coupling between incident waves to SPPs at the bottom and top interfaces. The finite element method is used to simulate the field distribution and the transmission mode in the waveguide. The hybrid waveguide with low absorption has great potential applications in THz integrated devices.
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2010, Vol. 27 
