Plasmonic analog of electromagnetically-induced transparency of asymmetrical slots waveguide

2016 ◽  
Vol 30 (05) ◽  
pp. 1650045 ◽  
Author(s):  
Lin Sun ◽  
Jicheng Wang ◽  
Zheng-Da Hu ◽  
Xiaosai Wang ◽  
Jing Chen
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Optical Switch ◽  
Optical Computing ◽  
Geometrical Parameters ◽  
Plasmonic Waveguides ◽  
Metal Insulator Metal ◽  
Fabry Perot ◽  
Line Theory ◽  
Formation And Evolution ◽  
Induced Transparency

In this paper, electromagnetically-induced transparency (EIT) phenomena have been investigated numerically in the plasmonic waveguides composed of unsymmetrical slot shaped metal–insulator–metal (MIM) structures. By the transmission line theory and Fabry–Perot model, the formation and evolution mechanisms of plasmon-induced transparency were exactly analyzed. The analysis showed that the peak of EIT-like transmission could be changed easily according to certain rules by adjusting the geometrical parameters of the slot structures, including the coupling distances and slot depths. We can find a new method to design nanoscale optical switch, devices in optical storage and optical computing.

scholarly journals All optical logic gates based on nanoplasmonic MIM waveguides

2020 ◽  
Vol 18 (12.2) ◽  
pp. 1
Author(s):  
Nguyen Van Tai
Keyword(s):  
Optical Computing ◽  
Logic Gates ◽  
Geometrical Parameters ◽  
Plasmonic Waveguides ◽  
Optical Logic ◽  
Logic Function ◽  
Compact Size ◽  
Metal Insulator Metal ◽  
Integrated Optical ◽  
All Optical

In this paper, we propose and investigate some designs of basic plasmonic logic gates in two dimensional plasmonic waveguides with nanotube metal-insulator-metal waveguides using the numerical method of eigenmode expansion. These gates, including XOR, OR, NOT, and Feynman gate can be realized by changing geometrical parameters properly. Also, by cascading and combining these basic logic gates, any complex logic function can also be obtained providing the highly integrated optical logic circuits. The proposed logic gates have the broadband up to 300 nm and only spend the compact size as much as 2 µm×1.2 µm. Thus, the devices can be applied widely and significantly in optical computing and processing devices.

scholarly journals Nanoscale Plasmonic Devices Based on Metal-Dielectric-Metal Stub Resonators

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Yin Huang ◽  
Changjun Min ◽  
Liu Yang ◽  
Georgios Veronis
Keyword(s):  
Transmission Lines ◽  
Slow Light ◽  
Electromagnetically Induced Transparency ◽  
Active Material ◽  
Plasmonic Waveguide ◽  
Plasmonic Waveguides ◽  
Periodic Arrays ◽  
Research Activities ◽  
Induced Transparency

We review some of the recent research activities on plasmonic devices based on metal-dielectric-metal (MDM) stub resonators for manipulating light at the nanoscale. We first introduce slow-light subwavelength plasmonic waveguides based on plasmonic analogues of periodically loaded transmission lines and electromagnetically induced transparency. In both cases, the structures consist of a MDM waveguide side-coupled to periodic arrays of MDM stub resonators. We then introduce absorption switches consisting of a MDM plasmonic waveguide side-coupled to a MDM stub resonator filled with an active material.

scholarly journals A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring Resonator

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 495
Author(s):  
Haoran Shi ◽  
Shubin Yan ◽  
Xiaoyu Yang ◽  
Xiushan Wu ◽  
Wenchang Wu ◽  
...  
Keyword(s):  
Figure Of Merit ◽  
Ring Resonator ◽  
Electromagnetically Induced Transparency ◽  
Spectral Characteristics ◽  
The Finite Element Method ◽  
Metal Insulator ◽  
Sensing Applications ◽  
Metal Insulator Metal ◽  
Induced Transparency ◽  
Sensing Performance

A nanostructure comprising the metal-insulator-metal (MIM) bus waveguide with a stub coupled with a racetrack ring resonator is designed. The spectral characteristics of the proposed structure are analyzed via the finite element method (FEM). The results show that there is a sharp Fano resonance profile and electromagnetically induced transparency (EIT)-like effect, which are excited by a coupling between the MIM bus waveguide with a stub and the racetrack ring resonator. The normalized HZ field is affected by the displacement of the ring from the stub x greatly. The influence of the geometric parameters of the sensor design on the sensing performance is discussed. The sensitivity of the proposed structure can reach 1774 nm/RIU with a figure of merit of 61. The proposed structure has potential in nanophotonic sensing applications.

ELECTROMAGNETICALLY INDUCED TRANSPARENCY (EIT)-LIKE TRANSMISSION IN ORTHOGONAL-COUPLED SLOT CAVITIES

2012 ◽  
Vol 27 (02) ◽  
pp. 1350009 ◽  
Author(s):  
YINGHUI GUO ◽  
LIANSHAN YAN ◽  
WEI PAN ◽  
BIN LUO ◽  
KUNHUA WEN ◽  
...  
Keyword(s):  
Near Infrared ◽  
Electromagnetically Induced Transparency ◽  
Fdtd Method ◽  
Infrared Range ◽  
Geometrical Parameters ◽  
Destructive Interference ◽  
Dark Mode ◽  
Horizontal Cavity ◽  
Induced Transparency ◽  
Vertical Cavity

The transmission characteristics and electromagnetic responses of orthogonal-coupled slot cavities system are investigated with finite difference time domain (FDTD) method. Results show the electromagnetically induced transparency (EIT)-like transmission can be realized in the proposed structure due to the destructive interference between the horizontal cavity (bright mode) and the vertical cavity (dark mode). Moreover, trapped resonance modes in the horizontal cavity can be selective whether to be induced in vertical cavity or not depending on their relative position. Consequently, EIT-like transmission can be obtained in visible and near-infrared range, simultaneously or individually. The corresponding physical mechanisms are discussed in terms of counter profiles of fields | Hz | and coupled mode theory. Influences of the geometrical parameters on EIT-like transmission are also investigated to generate transparency windows with different shape.

scholarly journals Erratum: Demonstration of resonant phenomena analogous to Autler-Townes splitting, electromagnetically induced transparency and Fano resonances in a deformed waveguide resonator

2021 ◽  
Vol 45 (1) ◽  
pp. 45-47
Author(s):  
A.V. Dyshlyuk
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Transmission Spectra ◽  
Fano Resonances ◽  
Transmitted Power ◽  
Waveguide Resonator ◽  
Reflection And Transmission ◽  
Input And Output ◽  
Fabry Perot ◽  
Before And After ◽  
Induced Transparency

In this erratum to the original paper [1] we correct an error in the calculation of the reflection and transmission spectra of the bent waveguide-based Fabry-Perot resonator. The error resulted from the neglect of cladding modes in the straight input and output sections before and after the resonator under study (Fig. 2a in the original paper). Although these modes do not contribute directly to the calculated reflected and transmitted power carried by the fundamental modes in the input and output sections, they must be taken into account for the correct computation of the reflection and transmission spectra of the resonator as was found out after the original paper had been published. In this erratum we provide the amended results as well as some corrections to the conclusions of the original paper.

scholarly journals Experimental study of EIT-Like phenomenon in a metamaterial plasma waveguide

2012 ◽  
Vol 1 (3) ◽  
pp. 61
Author(s):  
W. Wang ◽  
L. Zhang ◽  
K. Fang ◽  
Y. W. Zhang
Keyword(s):  
Transmission Lines ◽  
Electromagnetically Induced Transparency ◽  
Resonance Wavelength ◽  
Plasma Waveguide ◽  
Destructive Interference ◽  
Microwave Frequencies ◽  
Resonance Modes ◽  
Single Side ◽  
Fabry Perot ◽  
Induced Transparency

This paper demonstrates the realization of the electromagnetically induced transparency (EIT)-like transmission in a metamaterial plasma waveguide with double side defects based on transmission lines. The waveguide with a single side defect works as a plasma resonator and the resonance wavelength is determined by the Fabry-Perot resonance of surface plasma. While in a waveguide with double side defects, a transmission peak appears between the two resonators frequencies because of the destructive interference between the resonance modes of the two resonators, which indicates a pronounced EIT phenomenon. The experiment results agree well with simulations in microwave frequencies.

scholarly journals A compact structure for realizing Lorentzian, Fano, and electromagnetically induced transparency resonance lineshapes in a microring resonator

Nanophotonics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 841-848 ◽  
Author(s):  
Linpeng Gu ◽  
Hanlin Fang ◽  
Juntao Li ◽  
Liang Fang ◽  
Soo Jin Chua ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Electromagnetically Induced Transparency ◽  
Free Spectral Range ◽  
Microring Resonator ◽  
Quality Factors ◽  
Compact Structure ◽  
Fundamental Building Block ◽  
Resonant Modes ◽  
Fabry Perot ◽  
Induced Transparency

AbstractMicroring resonators, as a fundamental building block of photonic integrated circuits, are well developed into numerous functional devices, whose performances are strongly determined by microring’s resonance lineshapes. We propose a compact structure to reliably realize Lorentzian, Fano, and electromagnetically induced transparency (EIT) resonance lineshapes in a microring. By simply inserting two air-holes in the side-coupled waveguide of a microring, a Fabry-Perot (FP) resonance is involved to couple with microring’s resonant modes, showing Lorentzian, Fano, and EIT lineshapes over one free spectral range of the FP resonance. The quality factors, extinction ratios (ERs), and slope rates (SRs) in different lineshapes are discussed. At microring’s specific resonant wavelength, the lineshape could be tuned among these three types by controlling the FP cavity’s length. Experiment results verify the theoretical analysis well and represent Fano lineshapes with ERs of about 20 dB and SRs over 280 dB/nm. The reliably and flexibly tunable lineshapes in the compact structure have potentials to improve microring-based devices and expand their application scopes.

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