Artificial electromagnetic metamaterial produces exotic resonance, unusual characteristics not found in nature, but engineers can inherit the by controlling and manipulating their architecture. The design realization of dual-band, polarization, incident angle insensitive absorber (MA) is proposed. By shape structure, periodic pattern, dielectric layer thickness a significant way to realize high...

We propose a sub-wavelength range-based dual-band tunable ideal terahertz metamaterial perfect absorber. The absorber structure consists of three main layers, with the layer consisting metal I-shaped structure. By simulating incident wave absorbance structure, we found that has more than 99% absorption peaks in both bands. In addition, have investigated relationship between structural and geome...

Dual-band fiber lasers are emerging as a promising technology to penetrate new industrial and medical applications from their dual-band properties, in addition to providing compactness and environmental robustness from the waveguide structure. Here, we demonstrate the use of a common graphene saturable absorber and a single gain medium (Tm3+:ZBLAN fiber) to implement (1) a dual-band fiber ring ...

In this study authors worked to attain a metamaterial absorber for visible and infrared region using bismuth as its main constituent material. Proposed would be used various applications; solar cell, communication etc. To model the surface, two different sets of materials are observe compare absorption, having metal-insulator-metal structure metamaterial. It is observed that proposed layer Al/T...

A subwavelength metamaterial perfect absorber (MPA) in optical communication band was proposed and tested using the finite-difference time-domain method. The is periodic comprises a top layer of diamond silicon surrounded by L-shaped gold on substrate. It can achieve dual-band absorption, one peaks band. By changing gap (g) between two adjacent pieces silicon, thickness (h) layer, resonance wav...

In this paper, a three-layered frequency-selective absorber (FSA) that can efficiently absorb electromagnetic waves (EM) in double-band is proposed. The proposed structure designed so signals reflected from the frequency selective ground plane are located at 2.4 and 5.5 GHz (ISM UNII bands) absorbed by front resistive layers. Simulation results show not only blocks transmission desired bands bu...