Comparison and Simulation of Slow Light on Output Ports in a Nano-Waveguide Systems of 2*2 Channels based on Plasmonic Induced Transparency Resulting from Change in the Radius of the Ring Resonator Structure

Method of the analog of electromagnetically induced transparency (EIT) in plasmonic metal–dielectric–metal (MIM) waveguide is proposed by using symmetric side-coupled elliptic cavities and simulated by Finite-difference time-domain (FDTD). In this paper comparison and investigation in novel structure creating a slow light device based on plasmonic induced transparency (PIT), in ring resonator of elliptic shape with metal-dielectric-metal is examined. In this proposed structure, a ring resonator with two input ports and two output ports for occurrence and investigate of plasmon s mode in a waveguide system is examined. Poly metyle meta acrylate is used for dielectric that is sandwiched between gold metal layers. Wavelength of the pump for transparency of media is 1550 nm and wavelength of small signal in this structure is 820 nm. The length of this proposed device is 500 nm. In the proposed structure, we will get the real and imaginary of refractive index and slow down factor. The large group index get 33 in the cross way and 35 can be obtained at another PIT window. The results of this study can be used to design parabolic antennas and telecommunications, optical delay lines controlled.