Analysis of Filter and Waveguide Effect Based on the MIM Nanodisk with a Metallic Block

Abstract

A novel and meaningful plasmonic filter based on the metal-insulator-metal (MIM) waveguides directly connected to a nanocavity with a metallic block is proposed and demonstrated numerically. By the effective index method and the resonant theory of disk-shaped nanocavity, we reveal that the resonant wavelengths can be simply tuned by adjusting the height of the block, which is in accordance with the results calculated by finite-difference time-domain (FDTD) simulations. We also rotate the metallic block to achieve two resonant modes. One mode shows a blue shift, and the other mode shows a red shift. It is shown that the proposed structure performs as a bend waveguide not a filter when the width of the block increases to hundreds of nanometers. The proposed structure will have significant potential applications in nanointegrated circuits for optical filtering and processing.

Simple and Improved Plasmonic Sensor Configuration Established on MIM Waveguide for Enhanced Sensing Performance

“…Sensing is a hot topic among various fascinating applications, and several plasmonic sensor concepts established on MIM waveguides for refractive index (RI) and temperature sensing have been quantitatively explored and presented in recent years [8,9,10,11,6]. Moreover, several types of other plasmonic devices established on the MIM waveguide formation have also been proposed recently, including lters [12,13], power splitters [14,15], and light manipulation [16], among others.…”

Simple and Improved Plasmonic Sensor Configuration Established on Mim Waveguide for Enhanced Sensing Performance

“…Sensing is a hot topic among various fascinating applications, and several plasmonic sensor concepts established on MIM waveguides for refractive index (RI) and temperature sensing have been quantitatively explored and presented in recent years [8,9,10,11,6]. Moreover, several types of other plasmonic devices established on the MIM waveguide formation have also been proposed recently, including lters [12,13], power splitters [14,15], and light manipulation [16], among others.…”

Metal-Insulator-Metal Waveguide-Based Racetrack Integrated Circular Cavity for Refractive Index Sensing Application

“…The MIM WG structure is dominant and offers several extraordinary attributes, such as stronger light confinement, smaller mode size, minimal bending loss, and less costly production expense which has revitalized the implementation of wide-ranging plasmonic devices based on such WG arrangement. Lately, numerous types of MIM WG structurebased plasmonic components are anticipated, such as optical filters [10,11], optical power splitters [12,13], light manipulation [14], and sensing devices [15][16][17][18].…”