Laser & Optoelectronics Progress, Volume. 59, Issue 11, 1105002(2022)
Simulation Analysis of Grating-Assisted Ultra-Narrow Band Multispectral Plasma Resonance Sensing Structure
Figures & Tables(10)
Fig. 1. Structure and transmission spectrum of the sensor. (a) Three-dimensional structure of the sensor; (b) two-dimensional structure of the sensor; (c) transmission spectra of three structures
Fig. 2. Electric and magnetic field distributions at the corresponding wavelengths of two dips. (a) Electric field distribution; (b) magnetic field distribution
Fig. 3. Influence of metal nanopillar height on the structural transfer characteristic. (a) Influence of the height of the metal nanopillars on the transmission spectrum; (b) relationship between metal nanopillar height and peak wavelength and FWHM
Fig. 4. Influence of metal nanopillar width on structural transfer characteristic. (a) Influence of metal nanopillar width on transmission spectrum; (b) relationship between metal nanopillar width and peak wavelength and FWHM
Fig. 5. Influence of TM wave incident angle on the structural transfer characteristic. (a) Influence of TM wave incident angle on transmission spectrum; (b) relationship between TM wave incident angle and peak wavelength and FWHM
Fig. 7. Influence of structural deviation on transmission spectrum. (a) Size of rectangular dielectric block changes by 5%; (b) size of rectangular metal block changes by 5%; (c) thickness of SiO2/Al2O3 layer changes by 5%; (d) overall structure size changes by 5%
Fig. 8. Simulation results of sensing characteristics. (a) Transmission spectrum corresponding to different ambient refractive index conditions; (b) relationship between the peak wavelength of the transmission spectrum and the FWHM and the external refractive index
Table 1. FWHM of dip1 at 5% structural deviation
View tableTable 1. FWHM of dip1 at 5% structural deviation
Structural change type Decrease by 5% Original structure Increase by 5% Size of rectangular dielectric block 0.37 0.35 0.42 Size of rectangular metal block 0.42 0.35 0.38 Thickness of SiO2 /Al2O3 layer 0.38 0.35 0.35 Overall structure size 0.53 0.35 0.39
Table 2. FWHM of dip2 at 5% structural deviation
View tableTable 2. FWHM of dip2 at 5% structural deviation
Structural change type Decrease by 5% Original structure Increase by 5% Size of rectangular dielectric block 0.78 0.59 0.82 Size of rectangular metal block 0.65 0.59 0.72 Thickness of SiO2 /Al2O3 layer 0.85 0.59 0.61 Overall structure size 0.66 0.59 0.72
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Xu Zhong, Tiesheng Wu, Xueyu Wang, Huixian Zhang, Zhihui Liu, Dan Yang, Zuning Yang, Yan Liu, Rui Liu. Simulation Analysis of Grating-Assisted Ultra-Narrow Band Multispectral Plasma Resonance Sensing Structure[J]. Laser & Optoelectronics Progress, 2022, 59(11): 1105002
Paper Information
Category: Diffraction and Gratings
Received: Jul. 29, 2021
Accepted: Sep. 24, 2021
Published Online: Jun. 9, 2022
The Author Email: Tiesheng Wu (tieshengw@163.com), Xueyu Wang (xueyuwang@hotmail.com)
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