Multiple detuned-resonator induced transparencies in MIM plasmonic waveguide

作者：Liu, Li; Xia, Sheng-Xuan; Luo, Xin; Zhai, Xiang^*; Yu, Ya-Bin; Wang, Ling-Ling

来源：Optics Communications, 2018, 418: 27-31.

DOI：10.1016/j.optcom.2018.02.054

• Multiple detuned-resonator induced transparencies
• Constructive interference
• Integrated optical circuits

We propose a simple plasmonic waveguide system based on two-detuned resonators, which demonstrates multiple detuned-resonator induced transparencies at visible and near-infrared region. The performance of electromagnetic responses can be agile manipulated by tuning the asymmetry degree of the structure and the width of the split gap. Three transmission dips exist with the symmetrical design while three peaks emerge between the dip-position of the transmission spectra with two detuned resonators. The physical mechanism behind the plasmon-induced transparency (PIT) resonance is revealed as being attributed to the constructive interference between the confined modes in the detuned resonators. The former tend to the role of two coupled radiative oscillators. The work may open up avenues for the control of light in highly integrated optical circuits.

• 出版日期2018-7-1
• 单位湖南大学