Mid infrared sensing structure based on a metal–insulator–metal waveguides with a triangular-shaped resonator

Tan, Yu Ming; Chao, Chung-Ting Chou; Kooh, Muhammad Raziq Rahimi; Huang, Hung Ji; Thotagamuge, Roshan; Lim, Chee Ming; Chiang, Hai-Pang; Chau, Yuan-Fong Chou

doi:10.1016/j.optcom.2022.128282

Cited by 20 publications

(4 citation statements)

References 82 publications

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“…The metal region is silver (Ag) with the relative dispersive complex permittivity,ε m , characterized by the Drude model [51][52][53]: Where, ε ∞, ω p and γ are the relative permittivity at infinite frequency, the plasma frequency, and the collision frequency, respectively. The parameters of silver are ε ∞ = 3.7, ω p = 1.38 × 10 16 (rad/sec) and γ = 2.73 × 10 13 (rad/sec) [32].…”

Section: Structural Designmentioning

confidence: 99%

Ultra-wide bandstop infrared MIM filter using aperture coupled square cavities

Kamari¹,

Khosravi²,

Hayati³

2022

Phys. Scr.

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In this paper, a bandstop plasmonic filter with two wide bandgaps in Near-Infrared (NIR) and Mid-Infrared (MIR) wavelength bands is investigated numerically. The filter consists of double-sided square resonators end-coupled with a Metal-Insulator-Metal (MIM) waveguide via apertures. The wide bandgaps are achieved using a combination of square resonators which possess different relative permittivity and the same dimensional parameter. It is found that the stop wavelength ranges can be tuned by the number of square resonators with desired relative permittivity. Achieving the proper relative permittivity values may be difficult using general dielectrics; therefore, the resonators are filled by nanocomposite materials. The nanocomposite media are realized by poly-methyl-methacrylate (PMMA) and Ag nano-spheres. Also, there is a possibility of filter design at other ranges of NIR and MIR wavelength bands by changing the relative permittivity of the bus waveguide.

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Section: Structural Designmentioning

confidence: 99%

Ultra-wide bandstop infrared MIM filter using aperture coupled square cavities

Kamari¹,

Khosravi²,

Hayati³

2022

Phys. Scr.

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“…For instance, in biosensors, SPPs can detect the presence of biomolecules, such as DNA hybridization or blood components. Thus, these properties of SPPs not only provide new tools for research but also give new possibilities for industrial and technological applications, especially in the field of precision measurement and high-sensitivity detection [9,10].…”

Section: Introductionmentioning

confidence: 99%

A Nanosensor Based on Optical Principles for Temperature Detection Using a Gear Ring Model

Li,

Yan,

Cui

et al. 2024

Photonics

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Based on the characteristics of plasmonic waveguides and resonators, we propose a refractive index (RI) sensor that couples a gear ring with a metal–insulator–metal (MIM) waveguide. Using the finite element method (FEM), we conduct extensive spectral analysis of the sensor’s properties in the near-infrared spectrum. Furthermore, we investigate the structural parameters affecting the refractive index sensing characteristics. This study reveals that the complexity of the ring cavity edge can significantly enhance the sensitivity of the nanosensor. Optimal structural performance parameters are selected when the number of gears is six, resulting in a sensitivity of 3102 nm/RIU and a Figure of Merit (FOM) of 57.4 for the sensing characteristics of the gear ring. It possesses the advantages of small size and high sensitivity. This nanoscale sensor design demonstrates high sensitivity in the field of industrial material temperature detection.

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“…Therefore, this structure, capitalizing on the interactions among the metal, insulator, and their interface, serves as a key direction for optimizing nano-scale sensor structures. It enables the effective manipulation and application of SPPs [10].…”

Section: Introductionmentioning

confidence: 99%

Nano Application of Oil Concentration Detection Using Double-Tooth Ring Plasma Sensing

Li,

Yan,

Cui

et al. 2024

Applied Nano

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Based on the unique properties of optical Fano resonance and plasmonic-waveguide coupling systems, this paper explores a novel refractive index concentration sensor structure. The sensor structure is composed of a metal–insulator–metal (MIM) waveguide and two identically shaped and sized double-tooth ring couplers (DTR). The performance structure of the nanoscale refractive index sensor with DTR cavity was comprehensively assessed using the finite element method (FEM). Due to the impact of various geometric parameters on the sensing characteristics, including the rotation angles, the widths between the double-tooth rings, and the gaps between the cavity and the waveguide, we identified an optimal novel refractive index sensor structure that boasts the best performance indices. Finally, the DTR cavity sensor achieved a sensitivity of 4137 nm/RIU and Figure of merit (FOM) of 59.1. Given the high complexity and sensitivity of the overall structure, this nanoscale refractive index sensor can be applied to the detection of oil concentration in industrial oil–water mixtures, yielding highly precise results.

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Mid infrared sensing structure based on a metal–insulator–metal waveguides with a triangular-shaped resonator

Cited by 20 publications

References 82 publications

Ultra-wide bandstop infrared MIM filter using aperture coupled square cavities

Ultra-wide bandstop infrared MIM filter using aperture coupled square cavities

A Nanosensor Based on Optical Principles for Temperature Detection Using a Gear Ring Model

Nano Application of Oil Concentration Detection Using Double-Tooth Ring Plasma Sensing

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