Tunable multimode electromagnetically induced absorption transmission in metal-insulator-metal resonators

Dongdong Liu,Yue-Wu Pan,Xiushan Xia,Jian Lu,Jicheng Wang,Yan Sun

doi:10.1063/1.4942937

Abstract

The tunable multimode electromagnetically induced absorption (EIA)-like transmission was investigated in a two-ring system. In this system, by introducing asymmetry factor δi = λr - λr′, we provided several ways to modulate the EIA-like transmission spectra. An off-to-on EIA-like response could be realized by changing the radius or the refractive index of the rings. During the off-to-on process, we found the red shift and blue shift effects in the spectra are appeared and the widths of EIA-like dips are broadened. Numerical simulation by finite element method was conducted to verify our discussion. We believe all these would provide guidelines to design the useful EIA-like devices.

Highlights

Surface plasmon polaritons (SPPs), which are the type of transverse electromagnetic waves, propagate along the interface between metal and dielectric material.[1]
The tunable multimode electromagnetically induced absorption (EIA)-like transmission was investigated in a two-ring system
It has been demonstrated that Electromagnetically induced transparency (EIT)-like spectrum can be realized in classical configurations, such as the coupled dielectric resonators, the acoustic analogy of the EIT effect, the phase-coupled plasmonic induced transparency (PIT), and PIT in MIM waveguide bends.[20]

Summary

INTRODUCTION

Surface plasmon polaritons (SPPs), which are the type of transverse electromagnetic waves, propagate along the interface between metal and dielectric material.[1]. Wang et al[16] proposed a plasmonic filter based on a ring resonator. Induced transparency (EIT), a quantum mechanical phenomenon, reduces light absorption over a narrow spectral region in a coherently driven atomic system.[18] Since the sharp resonance and steep dispersion could achieve in EIT, these systems show prominent potential for biosensor and optical data storage.[19] Recently, it has been demonstrated that EIT-like spectrum can be realized in classical configurations, such as the coupled dielectric resonators, the acoustic analogy of the EIT effect, the phase-coupled plasmonic induced transparency (PIT), and PIT in MIM waveguide bends.[20] electromagnetically induced absorption (EIA),[21] an opposite effect of EIT, results from atomic coherence induced by optical radiation, is less studied.

MODEL AND THEORETICAL ANALYSIS

SINGLE RESONATOR SYSTEM

DUAL COUPLED RING RESONATORS SYSTEM

CONCLUSIONS