Research on transmission characteristics of side-coupled rectangular-ring resonator

2016 ◽  
Vol 30 (31) ◽  
pp. 1650374
Author(s):  
Luna Cui ◽  
Li Yu
Keyword(s):  
Figure Of Merit ◽  
Ring Resonator ◽  
Periodic Structures ◽  
Outer Wall ◽  
Ring Resonators ◽  
Transmission Characteristics ◽  
Wall Width ◽  
Resonant Modes ◽  
Highly Sensitive ◽  
Plasmonic Nanosensor

We investigate the characteristics of resonant modes in the side-coupled rectangular-ring resonator (SRR). The results show we can manipulate the resonant wavelengths of TMa mode and TMs mode by adjusting the outer wall width (Lx1) or the inner wall width (Lx2) of the ring resonators, and the effects of coupling distance on the full-width at half-maximum (FWHM) of resonant spectra are discussed. In sensing application, the proposed structure can work as a highly sensitive plasmonic nanosensor with a sensitivity of 1000 nm/RIU and a figure of merit (FOM) of 67. The values are comparable to periodic structures and the structures based on Fano resonance.

Highly sensitive fluid sensing due to slow light in pillar-based photonic crystal ring resonators

2018 ◽  
Vol 85 (7-8) ◽  
pp. 515-520
Author(s):  
Reyhaneh Jannesari ◽  
Thomas Grille ◽  
Bernhard Jakoby
Keyword(s):  
Photonic Crystal ◽  
Quality Factor ◽  
Slow Light ◽  
Ring Resonator ◽  
Resonant Mode ◽  
High Quality Factor ◽  
Ring Resonators ◽  
High Quality ◽  
Highly Sensitive ◽  
Photonic Crystal Ring Resonator

Abstract A design for a high quality factor photonic crystal ring resonator (PCRR) is presented. The PCRR is based on pillar type photonic crystals, which consist of a hexagonal array of silicon rods. The cavity is created by removing elements from the regular photonic crystal (PhC) grid. Achieving strong confinement of light intensity in the low index region is the advantage of this PCRR. In that manner, the interaction of light and analyte, which can be a liquid or a gas, will be enhanced. The high quality factor of the cavity (Q=1.0229\times {10}^{5}), along with strong overlap between the field of the resonant mode and the analyte as well as the low group velocity of PCRR modes yield enhanced light-matter interaction. An enhancement factor of \gamma =2.127\times {10}^{4} compared to the bulk light absorption in a homogenous material provides the potential for highly sensitive gas detection with a photonic crystal ring resonator.

scholarly journals Polymer Ring Resonator with a Partially Tapered Waveguide for Biomedical Sensing: Computational Study

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5017
Author(s):  
Tayebeh Sahraeibelverdi ◽  
L. Jay Guo ◽  
Hadi Veladi ◽  
Mazdak Rad Malekshahi
Keyword(s):  
Figure Of Merit ◽  
Ring Resonator ◽  
Computational Study ◽  
Low Cost ◽  
Ring Resonators ◽  
Q Factor ◽  
Biomedical Sensing ◽  
Waveguide Width ◽  
Tapered Waveguide ◽  
Silicon Based

Ring resonators are well-known optical biosensors thanks to their relatively high Q-factor and sensitivity, in addition to their potential to be fabricated in large arrays with a small footprint. Here, we investigated the characteristics of a polymer ring resonator with a partially tapered waveguide for Biomedical Sensing. The goal is to develop a more sensitive biosensor with an improved figure of merit. The concept is more significant field interaction with the sample under test in tapered segments. Waveguide width is hereby gradually reduced to half. Sensitivity improves from 84.6 to 101.74 [nm/RIU] in a relatively small Q-factor reduction from 4.60 × 103 for a strip waveguide to 4.36 × 103 for a π/4 partially tapered one. After the study, the number of tapered parts from zero to fifteen, the obtained figure of merit improves from 497 for a strip ring to 565 for a π/4 tapered ring close to six tapered ones. Considering the fabrication process, the three-tapered one is suggested. The all-polymer material device provides advantages of a low-cost, disposable biosensor with roll-to-roll fabrication compatibility. This design can also be applied on silicon on isolator, or polymer on silicon-based devices, thereby taking advantage of a higher Q-factor and greater sensitivity.

scholarly journals High Sensitivity Plasmonic Sensor Based on Fano Resonance with Inverted U-Shaped Resonator

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1164
Author(s):  
Gongli Xiao ◽  
Yanping Xu ◽  
Hongyan Yang ◽  
Zetao Ou ◽  
Jianyun Chen ◽  
...  
Keyword(s):  
Fano Resonance ◽  
Figure Of Merit ◽  
High Sensitivity ◽  
Refractive Index Sensor ◽  
Multimode Interference ◽  
Geometrical Parameters ◽  
The Finite Element Method ◽  
Plasmonic Sensor ◽  
Coupled Mode ◽  
Plasmonic Nanosensor

Herein, we propose a tunable plasmonic sensor with Fano resonators in an inverted U-shaped resonator. By manipulating the sharp asymmetric Fano resonance peaks, a high-sensitivity refractive index sensor can be realized. Using the multimode interference coupled-mode theory and the finite element method, we numerically simulate the influences of geometrical parameters on the plasmonic sensor. Optimizing the structure parameters, we can achieve a high plasmonic sensor with the maximum sensitivity for 840 nm/RIUand figure of merit for 3.9 × 105. The research results provide a reliable theoretical basis for designing high sensitivity to the next generation plasmonic nanosensor.

Transmission Characteristics of Deformed Split-Ring Resonators

2004 ◽  
Vol 43 (No. 2A) ◽  
pp. L190-L193 ◽  
Author(s):  
Yen-Chun Huang ◽  
Yi-Jang Hsu ◽  
Jiann-Shing Lih ◽  
Jyh-Long Chern
Keyword(s):  
Ring Resonators ◽  
Transmission Characteristics ◽  
Split Ring ◽  
Split Ring Resonators

Ab initiostructure solution by iterative phase-retrieval methods: performance tests on charge flipping and low-density elimination

2010 ◽  
Vol 43 (1) ◽  
pp. 89-100 ◽  
Author(s):  
Frank Fleischer ◽  
Thomas Weber ◽  
Sofia Deloudi ◽  
Lukáš Palatinus ◽  
Walter Steurer
Keyword(s):  
Figure Of Merit ◽  
Phase Retrieval ◽  
Periodic Structures ◽  
Correction Term ◽  
Low Density ◽  
Performance Tests ◽  
Acta Cryst ◽  
Model Independent ◽  
Novel Model

Comprehensive tests on the density-modification methods charge flipping [Oszlányi & Sütő (2004).Acta Cryst.A60, 134–141] and low-density elimination [Shiono & Woolfson (1992).Acta Cryst.A48, 451–456] for solving crystal structures are performed on simulated diffraction data of periodic structures and quasicrystals. A novel model-independent figure of merit, which characterizes the reliability of the retrieved phase of each reflection, is introduced and tested. The results of the performance tests show that the quality of the phase retrieval highly depends on the presence or absence of an inversion center and on the algorithm used for solving the structure. Charge flipping has a higher success rate for solving structures, while low-density elimination leads to a higher accuracy in phase retrieval. The best results can be obtained by combining the two methods,i.e.by solving a structure with charge flipping followed by a few cycles of low-density elimination. It is shown that these additional cycles dramatically improve the phases not only of the weak reflections but also of the strong ones. The results can be improved further by averaging the results of several runs and by applying a correction term that compensates for a reduction of the structure-factor amplitudes by averaging of inconsistently observed reflections. It is further shown that in most cases the retrieved phases converge to the best solution obtainable with a given method.

High-Q Silicon-on-Insulator Micro-Ring Resonator with Silica Covering

2013 ◽  
Vol 684 ◽  
pp. 443-446
Author(s):  
Chao Liu ◽  
Chen Yang Xue ◽  
Dan Feng Cui ◽  
Jun Bin Zang ◽  
Yong Hua Wang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Transmission Spectrum ◽  
Electron Beam Lithography ◽  
Ring Resonator ◽  
Sio2 Layer ◽  
Silicon On Insulator ◽  
New Method ◽  
Ring Resonators ◽  
Q Factor ◽  
High Q

We designed High-Q micro-ring resonators based on SOI material. A new method of using a top SiO2 layer to cover the waveguide is applied and the tested Q factor is as high as 1.0135×104. Micro-ring resonator has been fabricated using Electron-Beam Lithography and Inductive Coupled Plasma. OptiFDTD was used to simulate the micro-ring resonator and we compared the transmission spectrum of this resonator with the resonator without SiO2 covering.

scholarly journals A Nanoscale Structure Based on an MIM Waveguide Coupled with a Q Resonator for Monitoring Trace Element Concentration in the Human Body

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1384
Author(s):  
Tingsong Li ◽  
Shubin Yan ◽  
Pengwei Liu ◽  
Xiaoyu Zhang ◽  
Yi Zhang ◽  
...  
Keyword(s):  
Human Body ◽  
Figure Of Merit ◽  
Refractive Index Sensor ◽  
The Finite Element Method ◽  
Transmission Characteristics ◽  
Metal Insulator Metal ◽  
Potential Applications ◽  
Internal Mechanism ◽  
Nanoscale Structure ◽  
Mim Waveguide

In this study, a nano-refractive index sensor is designed that consists of a metal–insulator–metal (MIM) waveguide with a stub-1 and an orthogon ring resonator (ORR) with a stub-2. The finite element method (FEM) was used to analyze the transmission characteristics of the system. We studied the cause and internal mechanism of Fano resonance, and optimized the transmission characteristics by changing various parameters of the structure. In our experimental data, the suitable sensitivity could reach 2260 nm/RIU with a figure of merit of 211.42. Furthermore, we studied the detection of the concentration of trace elements (such as Na+) of the structure in the human body, and its sensitivity reached 0.505 nm/mgdL−1. The structure may have other potential applications in sensors.

scholarly journals Effect of Input Amplitude to Power Amplification in Various Orientation of Ring Resonator

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Haryana Mohd Hairi
Keyword(s):  
Ring Resonator ◽  
Simulation Software ◽  
Ring Resonators ◽  
Input Amplitude ◽  
Power Amplification ◽  
Optical Circuit ◽  
Potential Applications ◽  
Wavelength Filter ◽  
Waveguide Resonators ◽  
Wavelength Filtering

<p>Photonic ring waveguide resonators have great potential applications in wavelength filtering, switching, modulation and multiplexing.  The response of coupled ring resonators can be designed by using various coupling configurations. Particularly, ring resonators can be used as wavelength filter when the wavelength fits a whole multiple times in the circumference of the ring.  In this paper, we investigate the effect of input amplitude to power amplification in four ring resonator configurations and vary the input amplitude on five different wavelengths.  With OptiFDTD Photonics Simulation Software V8.0, the results show the intensity phenomenon of filtering in optical circuit.</p><p> </p>

Sign in / Sign up

Export Citation Format

Share Document