scholarly journals Super High Sensitivity Plasmonic Temperature Sensor Based on Square Ring Shape Resonator with Nanorods Defects

2021 ◽  
Author(s):  
Ji Pan ◽  
Shi Qianhan ◽  
Zheng Ling ◽  
Wang guanghui ◽  
chen fang
Keyword(s):  
Refractive Index ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Transmission Characteristics ◽  
Ring Shape ◽  
Resonant Modes ◽  
Metal Insulator Metal ◽  
Waveguide System ◽  
Difference Time ◽  
Mim Waveguide

Abstract A super high sensitivity plasmonic temperature sensor via a metal-insulator-metal (MIM) waveguide system is presented in this paper, the waveguide structure is composed of a square ring shape resonator with nanorods defects and a nanodisk resonator. Finite difference-time domain method (FDTD) is used to study the structure’s transmission characteristics and electromagnetic field distributions. Results show that sensitivity will be increased due to the gap plasmonic in the nanorod defect, the nanodisk resonator provides more plasmonic resonant modes for sensing. The positions and intensities of plasmonic resonant modes can be tuned by the radius of nanorod defects and coupling distance. The calculated maximum refractive index and FOM are and 3500, respectively. Compared to the structure without nanorods, the sensitivity is enhanced 33% for mode 1. For temperature sensing, the proposed structure possesses a relatively high sensitivity of about . The proposed plasmonic structure provides a basis for designing high sensitivity nano-biosensing, refractive index sensing.

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.

Refractive index and temperature sensing based on defect resonator coupled with a MIM waveguide

2019 ◽  
Vol 33 (03) ◽  
pp. 1950017 ◽  
Author(s):  
Fang Chen ◽  
Jijun Li
Keyword(s):  
Refractive Index ◽  
Time Domain ◽  
Temperature Sensor ◽  
Finite Difference Time Domain ◽  
Fdtd Method ◽  
High Sensitivity ◽  
Transmission Spectra ◽  
Asymmetric Transmission ◽  
Difference Time ◽  
Mim Waveguide

In this paper, a refractive index and temperature sensor based on Fano resonance is realized. The proposed structure is composed of a MIM waveguide and a defect cavity which is filled with sealed ethanol. The Fano spectra and field distribution is numerically investigated by the two-dimensional finite-difference time-domain (FDTD) method. Due to the symmetry breaking, the sharp and asymmetric transmission spectra can be used as a sensor with high sensitivity. The sensitivity of the proposed structure can be up to 652 nm/RIU and [Formula: see text]. Because of the high sensitivity, the proposed plasmonic structure may have potential application in nanosensing.

scholarly journals A Plasmonic Chip-Scale Refractive Index Sensor Design Based on Multiple Fano Resonances

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3181 ◽  
Author(s):  
Kunhua Wen ◽  
Li Chen ◽  
Jinyun Zhou ◽  
Liang Lei ◽  
Yihong Fang
Keyword(s):  
Refractive Index ◽  
Fdtd Method ◽  
High Sensitivity ◽  
Refractive Index Sensor ◽  
Fano Resonances ◽  
Metal Insulator Metal ◽  
High Figure ◽  
On Chip ◽  
Difference Time ◽  
Sub Wavelength

In this paper, multiple Fano resonances preferred in the refractive index sensing area are achieved based on sub-wavelength metal-insulator-metal (MIM) waveguides. Two slot cavities, which are placed between or above the MIM waveguides, can support the bright modes or the dark modes, respectively. Owing to the mode interferences, dual Fano resonances with obvious asymmetrical spectral responses are achieved. High sensitivity and high figure of merit are investigated by using the finite-difference time-domain (FDTD) method. In view of the development of chip-scale integrated photonics, two extra slot cavities are successively added to the structure, and consequently, three and four ultra-sharp Fano peaks with considerable performances are obtained, respectively. It is believed that this proposed structure can find important applications in the on-chip optical sensing and optical communication areas.

scholarly journals Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 125
Author(s):  
Shubin Yan ◽  
Haoran Shi ◽  
Xiaoyu Yang ◽  
Jing Guo ◽  
Wenchang Wu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Spectral Characteristics ◽  
High Sensitivity ◽  
Refractive Index Sensor ◽  
Plasmonic Sensors ◽  
Sensing Applications ◽  
Compact Size ◽  
Metal Insulator Metal ◽  
The Difference ◽  
Mim Waveguide

Due to their compact size and high sensitivity, plasmonic sensors have become a hot topic in the sensing field. A nanosensor structure, comprising the metal–insulator–metal (MIM) waveguide with a stub and a horizontal B-Type cavity, is designed as a refractive index sensor. The spectral characteristics of proposed structure are analyzed via the finite element method (FEM). The results show that there is a sharp Fano resonance profile, which is excited by a coupling between the MIM waveguide and the horizontal B-Type cavity. The normalized HZ field is affected by the difference value between the outer radii R1 and R2 of the semi-circle of the horizontal B-Type cavity greatly. The influence of every element of the whole system on sensing properties is discussed in depth. The sensitivity of the proposed structure can obtain 1548 nm/RIU (refractive index unit) with a figure of merit of 59. The proposed structure has potential in nanophotonic sensing applications.

scholarly journals A High Sensitive Sensor Using Mim Coupled With a Rectangular Cavity Based on Fano Resonance

2021 ◽  
Author(s):  
hocine bahri ◽  
Souheil Mouetsi ◽  
Abdesselam Hocini ◽  
hocine Ben Salah
Keyword(s):  
High Performance ◽  
High Sensitivity ◽  
Resonance Wavelength ◽  
Two Dimensions ◽  
Sensor Performance ◽  
Metal Insulator Metal ◽  
Wavelength Resolution ◽  
Waveguide System ◽  
Sensitive Sensor ◽  
Difference Time

Abstract In this paper, a design with high sensitivity of a plasmonic biosensor by waveguide system is proposed, based on Metal-Insulator-Metal (MIM) coupled with unique rectangular cavities, this structure numerically simulated using the Finite-Difference Time-Domain method (FDTD) in two Dimensions (2D), and analyzed for the optimal sensor performance, by detecting the resonance wavelength and varying the refractive index (RI). The results show two sharp transmission peaks with high transmittance and asymmetrical line-shaped Fano resonances achieved with high value of sensitivity is 3010nm/RIU, by taking the wavelength resolution reach as high as 3.84×10-6 RIU. Considering the standards of Chip-scale integrated planar photonic sensing, the newly designed of the proposed structure with such high sensitivity provides remarkable properties suitable for biosensors, filter, and provide a new possibility for designing compact and high-performance plasmonic biosensors devices.

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 Tunable Nanosensor With a Horizontal Number Eight-Shape Cavity in a MIM Waveguide System

2021 ◽  
Vol 9 ◽  
Author(s):  
Daijing Xu ◽  
Shubin Yan ◽  
Xiaoyu Yang ◽  
Jinxi Wang ◽  
Xiushan Wu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Devices ◽  
Refractive Index Sensor ◽  
Metal Waveguide ◽  
Metal Insulator Metal ◽  
Waveguide System ◽  
Mim Waveguide ◽  
Index Unit ◽  
Optical Structure ◽  
Refractive Index Detection

Optical devices play an important role in different fields, such as refractive index detection in food processing and the biochemical industry. In our work, a novel nanoscale optical structure, composed of a metal-insulator-metal waveguide with a stub and a horizontal number eight-shape cavity (HNEC), is presented. The transmission properties of this structure are investigated in detail by using finite element method The effects of geometric parameters on sensing performance are studied in detail. Moreover, the influences of an asymmetric resonator caused by shifting central rectangular cavity of HNEC on transmission spectrum are discussed. The changing parameters of HNEC resonator have different effects on different resonance dips. Then, when the parameters of this presented structure are fixed as a of 540 nm, b of 340 nm, S of 0, l of 70 nm and g of 10 nm, this intriguing structure can serve as a refractive index sensor, whose maximum sensitivity can reach 1,500 nm/refractive index unit with a figure of merit of 75. Therefore, this structure will contribute to the development of miniaturization of optical devices.

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.

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.

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