Article ID Journal Published Year Pages File Type
1533095 Optics Communications 2016 6 Pages PDF
Abstract

•High transmission of ~92%, narrow FWHM of ~25 nm and high group index of ~75 are realized to be used as an high-performance EIT-like filter with the proposed system.•Our system is tunable with the peak transmission wavelength, transmission and group index in a large scale.•Dual transmission peaks are appeared with asymmetrical radius of nanodisks.•Method of temporal coupled-mode theory and accurate FDTD simulation are used to investigate the proposed structure in detail.

We proposed a dual coupled-resonator system based on the metal-insulator-metal bus waveguide and numerically investigated the plasmon-induced transparency and slow light effect with the Finite-Difference Time-Domain simulations in this paper. The electromagnetically induced transparency-like spectral response will occur between two adjacent stub resonators with detuned resonant wavelength due to the phase-coupled effect. The transmissivity and group index equations were been deduced, which indicated that the system can achieve the effect of the multiple electromagnetically induced transparency-like and slow light. With the optimization, the single peak transmission can reach to as high as 92%, dual PIT transmission peaks appear, as well as group index can reach over 75. These characteristics indicate multiple applications of our system in integrated optical circuits.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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