Multiple Fano resonances based on clockwork spring-shaped resonator for refractive index sensing

2021 ◽  
Author(s):  
Jinghui Ding ◽  
Yunping Qi ◽  
Yujiao Yuan ◽  
Haowen Chen ◽  
Weiming Liu ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
High Performance ◽  
Figure Of Merit ◽  
Structural Parameters ◽  
The Finite Element Method ◽  
Resonant Line ◽  
Coupled Mode ◽  
Metal Insulator Metal ◽  
Mim Waveguide ◽  
Best Parameters

Abstract A surface plasmon polarized structure consisting of two metal-insulator-metal (MIM) waveguide coupled with clockwork spring-shaped resonators are constructed in this paper, and its geometric parameters are controlled within a few hundred nanometers. The finite element method (FEM) and multimode interference coupled mode theory (MICMT) are used to simulate and theoretically calculate the optical response of the designed structure. By modifying the structural parameters of the system, the influence on the asymmetry of the Fano resonance line is studied. The changes of the transmission spectra at different refractive indexes are also investigated. Based on this asymmetric resonant line, the sensitivity and FOM* (figure of merit) value of the cavity with different parameters are measured. The sensitivity and FOM* under the best parameters are 1200 nm/RIU and 191.6, respectively. The surface plasmon structure proposed and the results in this paper are promising for applications in the field of high-performance sensing and micro-nano optical devices.

scholarly journals A MIM Waveguide Structure of a High-Performance Refractive Index and Temperature Sensor Based on Fano Resonance

2021 ◽  
Vol 11 (22) ◽  
pp. 10629
Author(s):  
Pengwei Liu ◽  
Shubin Yan ◽  
Yifeng Ren ◽  
Xiaoyu Zhang ◽  
Tingsong Li ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Performance ◽  
Figure Of Merit ◽  
High Sensitivity ◽  
Wide Band ◽  
Destructive Interference ◽  
The Finite Element Method ◽  
Transmission Characteristics ◽  
Metal Insulator Metal ◽  
Mim Waveguide

A plasmonic refractive index nanosensor structure consisting of a metal-insulator-metal (MIM) waveguide with two symmetrical rectangle baffles coupled with a connected-concentric-double rings resonator (CCDRR) is presented. In this study, its transmission characteristics were investigated using the finite element method (FEM). The consequences, studied via simulation, revealed that the transmission spectrum of the system presents a sharp asymmetric Fano profile due to the destructive interference between the wide-band mode of two rectangle baffles on the bus waveguide and the narrow-band mode of the CCDRR. The effects of the geometric parameters of the structure on the transmission characteristics were investigated comprehensively. A sensitivity of 2260 nm/RIU and figure of merit (FOM) of 56.5 were the best levels of performance that the designed structure could achieve. In addition, the system could act as a sensor for use for temperature sensing, with a sensitivity that could reach 1.48 nm/°C. The designed structure advances with technology with new detection positions and has good application prospects in other high-sensitivity nanosensor fields, for example, acting as a biosensor to detect the hemoglobin level in the blood.

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 Fano Resonance in a MIM Waveguide with Two Triangle Stubs Coupled with a Split-Ring Nanocavity for Sensing Application

Sensors ◽  
2019 ◽  
Vol 19 (22) ◽  
pp. 4972 ◽  
Author(s):  
Xiaoyu Yang ◽  
Ertian Hua ◽  
Mengmeng Wang ◽  
Yifei Wang ◽  
Feng Wen ◽  
...  
Keyword(s):  
Fano Resonance ◽  
Figure Of Merit ◽  
The Finite Element Method ◽  
Split Ring ◽  
Metal Insulator Metal ◽  
Calculation Results ◽  
High Figure ◽  
On Chip ◽  
Mim Waveguide ◽  
Resonance Cavity

Herein, a compact refractive index nanosensor comprising a metal- insulator- metal (MIM) waveguide with symmetric two triangle stubs coupled with a circular split-ring resonance cavity (CSRRC) is theoretically presented. An analysis of the propagation characteristics of the designed structure is discussed employing the finite element method (FEM). The calculation results revealed that a Fano resonance outline emerged, which results from an interaction between the continuous broadband state of the waveguide with two symmetric triangle stubs and the discrete narrowband state of the CSRRC. The influence of geometric parameters on sensing properties was studied in detail. The maximum sensitivity reached 1500 nm/RIU with a high figure of merit of 65.2. The presented structure has great applications for on-chip plasmonic nanosensors.

The sensing characteristics based on electromagnetically-induced transparency-like response in double-sided stub and a nanodisk waveguide system

2017 ◽  
Vol 31 (10) ◽  
pp. 1750101 ◽  
Author(s):  
Shaofang Pang ◽  
Yiping Huo ◽  
Limei Hao ◽  
Kaigang Sun ◽  
Yang-Junjie Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Electromagnetically Induced Transparency ◽  
High Sensitivity ◽  
Waveguide Structure ◽  
The Finite Element Method ◽  
Metal Insulator Metal ◽  
Waveguide System ◽  
Induced Transparency ◽  
Mim Waveguide ◽  
Sensing Characteristics

We propose a novel metal–insulator–metal (MIM) waveguide structure consisting of a stub and a double side-coupled nanodisk. Its electromagnetically-induced transparency (EIT)-like response and transmission properties are numerically investigated by the finite element method (FEM). Numerical simulation results show that the EIT-like phenomenon appears in the transmission spectra. The transparency window can not only be manipulated by changing the radius of the nanodisk and the height of the stub, but also appear redshifted with the increasing of the refractive index n. Furthermore, the MIM waveguide structure is easy to yield a high sensitivity of 1200 nm/RIU with a figure of merit about [Formula: see text], which may be applied to nanosensors. These results would help us design the high-performance plasmonic devices based on the EIT-like response.

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.

scholarly journals Design of an Acoustic Bender Transducer for Active Sonobuoys

Sensors ◽  
2019 ◽  
Vol 19 (7) ◽  
pp. 1691 ◽  
Author(s):  
Pyo ◽  
Shim ◽  
Roh
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Performance ◽  
Structural Parameters ◽  
Underwater Vehicles ◽  
Acoustic Properties ◽  
Voltage Response ◽  
Sound Waves ◽  
The Finite Element Method ◽  
High Detection

Recent underwater vehicles can operate with a much lower level of noise, which increases the need for an active sonobuoy with a high detection performance. These active sonobuoys mainly use bender transducers as a projector that emits sound waves. In this study, we designed a high-performance bender transducer and verified the validity of the design through experiments. For this purpose, first we analyzed the variation of the peak transmitting voltage response (TVR) level and peak TVR frequency of the bender transducer, in relation to its structural parameters. The performance of the bender transducer was analyzed using the finite element method. Then we derived the optimal structure of the bender transducer to achieve the highest TVR. Based on the design, a prototype of the bender transducer was fabricated and its acoustic properties were measured to confirm the validity of the design.

An optical pressure sensor based on π-shaped surface plasmon polariton resonator

2016 ◽  
Vol 30 (21) ◽  
pp. 1650284 ◽  
Author(s):  
Gaoyan Duan ◽  
Peilin Lang ◽  
Lulu Wang ◽  
Li Yu ◽  
Jinghua Xiao
Keyword(s):  
Surface Plasmon ◽  
Pressure Sensor ◽  
Surface Plasmon Polariton ◽  
High Sensitivity ◽  
Wavelength Shift ◽  
The Finite Element Method ◽  
Metal Insulator Metal ◽  
Potential Applications ◽  
Plasmon Polariton ◽  
Optical Pressure

We propose a metal–insulator–metal (MIM) structure which consists of a [Formula: see text]-shaped resonator and a surface plasmon polariton (SPP) waveguide. The finite element method (FEM) is employed in the simulation. The results show that this structure forms an optical pressure sensor. The transmission spectra have a redshift with increasing pressure, and the relation between the wavelength shift and the pressure is linear. The nanoscale pressure sensor shows a high sensitivity and may have potential applications in biological and biomedical engineering.

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.

scholarly journals Design of a Surface Plasmon Resonance Temperature Sensor with Multi-Wavebands Based on Conjoined-Tubular Anti-Resonance Fiber

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 231
Author(s):  
Qiming Wang ◽  
Xuenan Zhang ◽  
Xin Yan ◽  
Fang Wang ◽  
Tonglei Cheng
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Temperature Sensor ◽  
Structural Parameters ◽  
High Sensitivity ◽  
Biological Research ◽  
The Finite Element Method ◽  
Practical Applications ◽  
Spr Effect

In this work, a surface plasmon resonance (SPR) temperature sensor based on a con-joined-tubular anti-resonance optical fiber (CTF) was theoretically designed and analyzed using the finite element method. The CTF cladding was composed of eight pairs of conjoined tubes, and one or two holes of the tubes were selectively coated with gold to generate the SPR effect. Alcohol was injected into the core of the CTF to work as the sensing medium using vapor deposition. The proposed sensing structure exhibited excellent birefringence and produced more than six resonant peaks in different wavebands of the X and Y polarization. The positions of those resonant peaks were sensitive to temperature change, and the simulated sensitivity was about 3.2–3.6 nm/°C. The multiple working wavebands of the proposed sensing structure could be used for self-verification. Moreover, the influence of structural parameters on sensing performance was analyzed in detail. Possessing features of high sensitivity, good birefringence, multiple measuring wavebands, and self-verification, the proposed CTF-based SPR sensor has great potential in practical applications such as biological research and chemical sensing.

scholarly journals Refractive Index Sensing Based on Multiple Fano Resonances in a Split-Ring Cavity-Coupled MIM Waveguide

Photonics ◽  
2021 ◽  
Vol 8 (11) ◽  
pp. 472
Author(s):  
Jianfeng Chen ◽  
Hao Yang ◽  
Zhiyuan Fang ◽  
Ming Zhao ◽  
Chenbo Xie
Keyword(s):  
Ring Cavity ◽  
Wide Band ◽  
Fano Resonances ◽  
The Finite Element Method ◽  
Split Ring ◽  
Discrete State ◽  
Continuous State ◽  
Metal Insulator Metal ◽  
Potential Applications ◽  
Mim Waveguide

A metal–insulator–metal (MIM) waveguide consisting of a circular split-ring resonance cavity (CSRRC) and a double symmetric rectangular stub waveguide (DSRSW) is designed, which can excite quadruple Fano resonances. The finite element method (FEM) is used to investigate influences of geometric parameters on the transmission characteristics of the structure. The results show that Fano resonances are excited by the interference between the DSRSW and the CSRRC. Among them, the resonance wavelengths of the Fano resonances are tuned by the narrow-band discrete state excited by the CSRRC, and the resonance line transmittance and profiles are tuned by the wide-band continuous state excited by the DSRSW. The sensitivity (S) can be up to 1328.8 nm/RIU, and the figure of merit (FOM) can be up to 4.80 × 104. Based on these advantages, the structure has potential applications in sensing in the sub-wavelength range.

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