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

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Xiang Zhai ◽  
Yuanyuan Liu ◽  
Hongju Li ◽  
Rexidaiguli Wujiaihemaiti ◽  
Yanhua Zhu ◽  
...  
Keyword(s):  
Blue Shift ◽  
Index Method ◽  
Optical Filtering ◽  
Metal Insulator ◽  
Effective Index Method ◽  
Resonant Modes ◽  
Metal Insulator Metal ◽  
Potential Applications ◽  
Bend Waveguide ◽  
Difference Time

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.

WAVELENGTH DEMULTIPLEXING IN METAL–INSULATOR–METAL PLASMONIC WAVEGUIDES

2014 ◽  
Vol 28 (04) ◽  
pp. 1450025 ◽  
Author(s):  
XIANKUN YAO
Keyword(s):  
Transmission Efficiency ◽  
Plasmonic Waveguides ◽  
Metal Insulator ◽  
Metal Insulator Metal ◽  
Integrated Optical ◽  
Potential Applications ◽  
Wavelength Demultiplexing ◽  
Optical Circuits ◽  
Difference Time ◽  
Mim Waveguide

In this paper, we have numerically investigated a novel kind of ultra-compact wavelength demultiplexing (WDM) in high-confined metal–insulator–metal (MIM) plasmonic waveguides. It is found that the drop transmission efficiency of the filtering cavity can be strongly enhanced by introducing a side-coupled cavity in the MIM waveguide. The theoretical analysis is verified by the finite-difference time-domain simulations. Through cascading the filtering units, a highly effective triple-wavelength demultiplexer is proposed by selecting the specific separation between the two coupled cavities of filtering units. Our results may find potential applications for the nanoscale WDM systems in highly integrated optical circuits and networks.

A New Plasmonic Filter through Double Metal Films Perforated with Rectangular Grooves and Circular Holes

2014 ◽  
Vol 548-549 ◽  
pp. 389-392 ◽  
Author(s):  
Xiang Nan Zhang ◽  
Gui Qiang Liu ◽  
Ying Hu ◽  
Yuan Hao Chen ◽  
Zheng Jie Cai ◽  
...  
Keyword(s):  
Optoelectronic Devices ◽  
Peak Position ◽  
Metal Films ◽  
Absorbing Boundary ◽  
Metal Insulator ◽  
Passband Filter ◽  
Metal Insulator Metal ◽  
Potential Applications ◽  
Circular Holes ◽  
Difference Time

A novel plasmonic passband filter consisting of metal-insulator-metal perforated with an array of rectangular grooves and circular holes is proposed and demonstrated. The transmission property of the proposed structure is obtained by employing the finite difference time domain with perfectly matched layer absorbing boundary condition. The result reveals that a passband with high transmission can be achieved. And the transmission peak position can be efficiently tuned by changing the factors of the structure, such as the sizes of circular holes and grooves. The proposed filter has potential applications for integrated optoelectronic devices due to its miniaturized size.

scholarly journals Design and analysis of plasmonic nanostub filter using metal-insulator- met-al (MIM) waveguide

2018 ◽  
Vol 7 (3) ◽  
pp. 1915
Author(s):  
Dr Suraya Mubeen
Keyword(s):  
Integrated Circuits ◽  
Narrow Band ◽  
Transmission Band ◽  
Resonance Theory ◽  
Metal Insulator ◽  
Metal Insulator Metal ◽  
Potential Applications ◽  
Silicon Based ◽  
Difference Time ◽  
Mim Waveguide

Metal-insulator-metal (MIM) silicon based nanostub structures have been designed and analyzed using the finite difference time-domain (FDTD) technique. An analytic model is discussed which is based on the resonance theory. Numerical results show double and single narrow band transmissions for small and long lengths of nanostub, respectively. The transmission band of the structure is controlled by varying the width and the length of the nanostub. These MIM nanostub structure can have potential applications in nanoscale high density photonic integrated circuits (PICs).  

Strong coupling between two plasmonic cavities based on metal–insulator–metal structure

2019 ◽  
Vol 33 (10) ◽  
pp. 1950116
Author(s):  
Jun-Shu Shang ◽  
Gang Song ◽  
Jie-Yun Yan ◽  
Li Yu
Keyword(s):  
Strong Coupling ◽  
Metal Structure ◽  
Rectangular Cavity ◽  
Resonant Peak ◽  
Circular Cavity ◽  
Narrow Linewidth ◽  
Metal Insulator ◽  
Metal Insulator Metal ◽  
Potential Applications ◽  
Difference Time

We investigate the strong coupling phenomenon between a circular cavity and a rectangular cavity based on a metal–insulator–metal (MIM) structure. Finite difference time domain method is employed to well describe the strong coupling phenomenon and the simulation results show that two splitting peaks are observed in our proposed structure, while only one resonant peak is found in MIM structure involving only a circular cavity. The coupling between the circular cavity and the rectangular cavity is manipulated by the geometry of the cavities and the symmetry of the whole structure. An asymmetric lineshape of the transmission spectrum is observed with a narrow linewidth and a deep valley, which has potential applications in plasmon sensor.

scholarly journals Theoretical Analysis of Terahertz Dielectric–Loaded Graphene Waveguide

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 210
Author(s):  
Da Teng ◽  
Kai Wang
Keyword(s):  
Photonic Devices ◽  
Effective Index ◽  
The Finite Element Method ◽  
Index Method ◽  
Modal Properties ◽  
Terahertz Region ◽  
Effective Index Method ◽  
Integration Density ◽  
Device Integration ◽  
Potential Applications

The waveguiding of terahertz surface plasmons by a GaAs strip-loaded graphene waveguide is investigated based on the effective-index method and the finite element method. Modal properties of the effective mode index, modal loss, and cut-off characteristics of higher order modes are investigated. By modulating the Fermi level, the modal properties of the fundamental mode could be adjusted. The accuracy of the effective-index method is verified by a comparison between the analytical results and numerical simulations. Besides the modal properties, the crosstalk between the adjacent waveguides, which determines the device integration density, is studied. The findings show that the effective-index method is highly valid for analyzing dielectric-loaded graphene plasmon waveguides in the terahertz region and may have potential applications in subwavelength tunable integrated photonic devices.

Band-stop filter based on a metal/insulator-disk array/metal structure

2019 ◽  
Vol 33 (20) ◽  
pp. 1950232
Author(s):  
J. L. Duan ◽  
G. Song ◽  
P. L. Lang ◽  
G. Y. Duan ◽  
F. Z. Xie
Keyword(s):  
Stop Band ◽  
Metal Structure ◽  
Metal Insulator ◽  
Disk Array ◽  
Central Wavelength ◽  
Metal Insulator Metal ◽  
Band Stop Filter ◽  
Potential Applications ◽  
Fdtd Methods ◽  
Mim Waveguide

We describe a band-stop filter based on a periodic dielectric-disk array inserted into a metal–insulator–metal (MIM) waveguide. We use finite-difference time-domain (FDTD) methods to study the characteristics of our proposed structure. The results show that there is a flat stop band in the transmission spectrum, in which the transmission is close to zero. The central wavelength of the filter can be controlled by adjusting the lattice constant of the disk array. We discuss the maximum bandwidth and provide a set of parameters suitable for designing a band-stop filter that has a flat stop band-width of approximately 400 nm and a superior on/off ratio. Our structure has potential applications in the design of nanoscale optical devices.

Temperature Dependent Electrical and Dielectrics Properties of Metal-Insulator-Metal Capacitors with Alumina-Silicone Nanolaminate Films

2014 ◽  
Vol 1675 ◽  
pp. 169-176
Author(s):  
Santosh K. Sahoo ◽  
Rakhi P. Patel ◽  
Colin A. Wolden
Keyword(s):  
Conduction Mechanism ◽  
Chemical Vapor ◽  
Dielectric Films ◽  
Temperature Dependent ◽  
Metal Insulator ◽  
Metal Structures ◽  
Voltage Coefficient ◽  
Metal Insulator Metal ◽  
Potential Applications ◽  
Electrical And Dielectric Properties

ABSTRACTAlumina-silicone hybrid nanolaminate films were synthesized by plasma enhanced chemical vapor deposition (PECVD) process. PECVD allows digital control over nanolaminate construction, and may be performed at low temperature for compatibility with flexible substrates. These materials are being considered as dielectrics for application such as capacitors in thin film transistors and memory devices. Temperature dependent electrical and dielectric properties of the nanolaminate dielectric films in metal-insulator-metal structures are taken in the range of 200- 340 K to better asses their potential applications for different devices. It is observed that the frequency dependent dielectric constant (εr) and ac conductivity (σac) increase with the temperature. Both quadratic (α) and linear (β) voltage coefficient of capacitance (VCC) increases as the temperature increases. The temperature co-efficient of capacitance (TCC) decreases from 894 to 374 ppm/K as the Al2O3 composition increases in the alumina/silicone nanolaminates. Activation energy (Ea) for hopping conduction mechanism varies from 0.011 eV to 0.008 eV as the alumina composition increases from 50 to 83.3%.

scholarly journals Design and Fabrication of a Wavelength-Selective Near-Infrared Metasurface Emitter for a Thermophotovoltaic System

Micromachines ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 157 ◽  
Author(s):  
Atsushi Sakurai ◽  
Yuki Matsuno
Keyword(s):  
Near Infrared ◽  
Underlying Mechanism ◽  
Infrared Region ◽  
Spectral Emissivity ◽  
Metal Insulator ◽  
Metal Insulator Metal ◽  
Thermal Emitter ◽  
Wavelength Selectivity ◽  
Selective Thermal Emitter ◽  
Difference Time

In this study, a tungsten-SiO2-based metal–insulator–metal-structured metasurface for the thermal emitter of the thermophotovoltaic system was designed and fabricated. The proposed emitter was fabricated by applying the photolithography method. The fabricated emitter has high emissivity in the visible to near-infrared region and shows excellent wavelength selectivity. This spectral emissivity tendency agreed well with the result calculated by the finite-difference time-domain method. Additionally, the underlying mechanism of its emission was scrutinized. Study of the fabrication process and theoretical mechanisms of the emission, clarified in this research, will be fundamental to design the wavelength-selective thermal emitter.

scholarly journals Optical transmission theory for metal-insulator-metal periodic nanostructures

Nanophotonics ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 349-355 ◽  
Author(s):  
Andre-Pierre Blanchard-Dionne ◽  
Michel Meunier
Keyword(s):  
Dielectric Layer ◽  
Metal Insulator ◽  
Total Transmission ◽  
Coupled Mode ◽  
Transmission And Reflection Coefficients ◽  
Resonant Modes ◽  
Metal Insulator Metal ◽  
Phase Interference ◽  
Multiple Paths ◽  
Transmission And Reflection

AbstractA semi-analytical formalism for the optical properties of a metal-insulator-metal periodic nanostructure using coupled-mode theory is presented. This structure consists in a dielectric layer in between two metallic layers with periodic one-dimensional nanoslit corrugation. The model is developed using multiple-scattering formalism, which defines transmission and reflection coefficients for each of the interface as a semi-infinite medium. Total transmission is then calculated using a summation of the multiple paths of light inside the structure. This method allows finding an exact solution for the transmission problem in every dimension regime, as long as a sufficient number of diffraction orders and guided modes are considered for the structure. The resonant modes of the structure are found to be related to the metallic slab only and to a combination of both the metallic slab and dielectric layer. This model also allows describing the resonant behavior of the system in the limit of a small dielectric layer, for which discontinuities in the dispersion curves are found. These discontinuities result from the out-of-phase interference of the different diffraction orders of the system, which account for field interaction for both inner interfaces of the structure.

scholarly journals Triple-wavelength filter based on the nanoplasmonic metal-insulator-metal waveguides

2021 ◽  
Author(s):  
Cao Dung Truong ◽  
Tai Nguyen Van ◽  
Minh Tuan Trinh ◽  
Hoang Chu Manh ◽  
Hung Nguyen Tan ◽  
...  
Keyword(s):  
Communication Systems ◽  
Metal Structure ◽  
Simulation Method ◽  
Transmission Efficiency ◽  
Metal Insulator ◽  
Overall Design ◽  
Coupled Mode ◽  
Metal Insulator Metal ◽  
Potential Applications ◽  
Wavelength Filter

Abstract In this paper, we present a proposal for compact photonic wavelength filtering and 3-dB wavelength splitting device based on nanoplasmonic metal-insulator-metal structure. The working performance of the device has been accurately simulated using the temporal coupled-mode theory. We use a numerical simulation method of eigenmode expansion propagation for the overall design process. We show that the transmission efficiency of the drop filter can be significantly enhanced by applying specifically optimization of nanostub waveguide. The proposed structure has potential applications in highly efficient ultra-compact integration circuits as well as in optical communication systems at nanoscale.

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