scholarly journals Ultrawide Bandgap and High Sensitivity of a Plasmonic Metal-Insulator-Metal Waveguide Filter with Cavity and Baffles

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 2030 ◽  
Author(s):  
Yuan-Fong Chou Chau ◽  
Chung-Ting Chou Chao ◽  
Hung Ji Huang ◽  
Muhammad Raziq Rahimi Kooh ◽  
Narayana Thotagamuge Roshan Nilantha Kumara ◽  
...  
Keyword(s):  
Figure Of Merit ◽  
Resonance Condition ◽  
Structural Parameters ◽  
High Sensitivity ◽  
Cavity Resonance ◽  
Plasmonic Sensor ◽  
Metal Insulator ◽  
Metal Waveguide ◽  
Metal Insulator Metal ◽  
Waveguide Filter

A plasmonic metal-insulator-metal waveguide filter consisting of one rectangular cavity and three silver baffles is numerically investigated using the finite element method and theoretically described by the cavity resonance mode theory. The proposed structure shows a simple shape with a small number of structural parameters that can function as a plasmonic sensor with a filter property, high sensitivity and figure of merit, and wide bandgap. Simulation results demonstrate that a cavity with three silver baffles could significantly affect the resonance condition and remarkably enhance the sensor performance compared to its counterpart without baffles. The calculated sensitivity (S) and figure of merit (FOM) in the first mode can reach 3300.00 nm/RIU and 170.00 RIU−1. Besides, S and FOM values can simultaneously get above 2000.00 nm/RIU and 110.00 RIU−1 in the first and second modes by varying a broad range of the structural parameters, which are not attainable in the reported literature. The proposed structure can realize multiple modes operating in a wide wavelength range, which may have potential applications in the on-chip plasmonic sensor, filter, and other optical integrated circuits.

scholarly journals Plasmonic Refractive Index Sensor Optimized for Color Detection

2021 ◽  
Author(s):  
Ahmad Azuad Yaseer ◽  
Md. Farhad Hassan ◽  
Infiter Tathfif ◽  
Kazi Sharmeen Rashid ◽  
Rakibul Hasan Sagor
Keyword(s):  
Refractive Index ◽  
Figure Of Merit ◽  
Structural Parameters ◽  
Color Filter ◽  
Refractive Index Sensor ◽  
Plasmonic Sensor ◽  
Metal Insulator ◽  
Initial Sensitivity ◽  
Metal Insulator Metal ◽  
Color Detection

Abstract In this paper, a six cavity-based metal-insulator-metal plasmonic sensor is proposed. The designed sensor can detect six primary colors in the visible wavelength. Moreover, the proposed sensor can also sense the change in the refractive index. An initial sensitivity of 648.41 nm/RIU and figure of merit of (FOM) 141.29 are found based on the transmittance profile extracted through the two-dimensional (2D) finite element method (FEM). The structural parameters are optimized to maximize the performance of the modeled device both as a color filter and a refractive index sensor. The optimized FOM, FOM* and sensitivity are recorded as 218.80, 4.771 × 10⁴, and 865.31 nm/RIU, respectively. Due to high FOM and FOM*, this sensor is expected to be utilized as a color filter in various sectors, such as medical, industrial, and forensic, where the light of a particular wavelength is mandatory.

Theoretical investigation of a plasmonic sensor based on a metal–insulator–metal waveguide with a side-coupled nanodisk resonator

2015 ◽  
Vol 9 (1) ◽  
pp. 093099 ◽  
Author(s):  
Yiyuan Xie ◽  
Yexiong Huang ◽  
Hongjun Che ◽  
Weilun Zhao ◽  
Weihua Xu ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Plasmonic Sensor ◽  
Metal Insulator ◽  
Metal Waveguide ◽  
Metal Insulator Metal

A High Performance Plasmonic Sensor Based on Metal-Insulator-Metal Waveguide Coupled with a Double-Cavity Structure

Plasmonics ◽  
2016 ◽  
Vol 12 (2) ◽  
pp. 223-227 ◽  
Author(s):  
Shiwen Luo ◽  
Bin Li ◽  
Dongsheng Xiong ◽  
Duluo Zuo ◽  
Xinbing Wang
Keyword(s):  
High Performance ◽  
Plasmonic Sensor ◽  
Metal Insulator ◽  
Metal Waveguide ◽  
Metal Insulator Metal ◽  
Cavity Structure

Independently tunable dual resonant dip refractive index sensor based on metal-insulator-metal waveguide with Q-shaped resonant cavity

2022 ◽  
Author(s):  
Haowen Chen ◽  
Yunping Qi ◽  
Jinghui Ding ◽  
Yujiao Yuan ◽  
Zhenting Tian ◽  
...  
Keyword(s):  
Refractive Index ◽  
Resonant Cavity ◽  
Fdtd Method ◽  
High Sensitivity ◽  
Refractive Index Sensor ◽  
Metal Insulator ◽  
Metal Waveguide ◽  
Metal Insulator Metal ◽  
Simulation Results ◽  
Refractive Index Sensors

Abstract A plasmonic resonator system consisting of a metal-insulator-metal waveguide and a Q-shaped resonant cavity is proposed in this paper. The transmission properties of surface plasmon polaritons in this structure are investigated using the finite difference in time domain (FDTD) method, and the simulation results contain two resonant dips. And the physical mechanism is studied by the multimode interference coupled mode theory (MICMT), the theoretical results are in highly consistent with the simulation results. Furthermore, the parameters of the Q-shaped cavity can be controlled to adjust two dips respectively. The refractive index sensor with a sensitivity of 1578nm/RIU and figure of merit (FOM) of 175, performs better than most of the similar structures. Therefore, the results of the study are instructive for the design and application of high sensitivity nanoscale refractive index sensors.

scholarly journals Refractive Index, Temperature and Pressure of Elliptical Plasmonic Waveguide Resonator

2021 ◽  
Vol 11 (2) ◽  
pp. 2029-2037
Author(s):  
Bahram Dehghan
Keyword(s):  
Refractive Index ◽  
Figure Of Merit ◽  
High Sensitivity ◽  
Plasmonic Waveguide ◽  
Waveguide Resonator ◽  
Metal Insulator ◽  
Metal Insulator Metal ◽  
Refractive Index Increase ◽  
Temperature And Pressure ◽  
The Right

This paper proposes the elliptical-shaped based on two-dimensional Metal-Insulator-Metal (MIM) plasmonic waveguide configuration with the sensor characteristics simulated by Finite-Element-Method (FEM). Temperature, refractive index, and pressure are evaluated in the structure by considering the transmission spectrum. As the temperature and refractive index increase, the corresponding curves shift to the right wavelengths. Simulation results show that resonant wavelength of nanocavity shifts to lower wavelength with increasing the pressure. It can be seen that the resonance curves between 1300nm to 1400nm are sharper than the other wavelengths in this structure. The sensitivity and the Figure of Merit (FOM) can be evaluated by considering the mentioned equations. The proposed structure could be applied to develop resonator applications with high sensitivity and tunable response.

Sign in / Sign up

Export Citation Format

Share Document