Plasmonic-induced transparency in a metallic stub with two cuts and transmission line model

ABSTRACT

We investigate a metal–insulator–metal (MIM) structure, which is composed of a bus MIM waveguide and a stub modified by two cuts. A transmission line (TL) model is proposed to depict the propagation characteristics of surface plasmon polaritons (SPPs). The finite element method is conducted to calculate the transmission spectrum of SPPs. Plasmonic-induced transparency spectral response can be achieved when different cuts are introduced. Under different parameters, theoretical results based on the TL model match with the simulation results very well. It is believed that our findings provide a smart way to design MIM-based plasmonic sensors and slow light devices.

KEYWORDS:

• Surface plasmons
• metal–insulator–metal
• plasmonic-induced transparency
• transmission line

Acknowledgments

This project was supported by National Natural Science Foundation of China under Grant No. 11404143, Ministry of Education of the People's Republic of China 1144130201150080, the Fundamental Research Funds for the Jiangnan University under Grant No. JUSRP115A15, JUSRP51628B, and JUSRP51517.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This project was supported by the Ministry of Education of the People‘s Republic of China [grant number 1144130201150080] and by the National Natural Science Foundation of China [grant number 114041430, the Fundamental Research Funds for the Jiangnan University [grant numbers JUSRP115A15, JUSRP51628B, and JUSRP51517].