Dual-band total absorption via guided-mode resonance in a monolayer MoS2 covered dielectric grating structure

2018 ◽  
Author(s):  
Yeming Qing ◽  
Jigang Hu ◽  
Yongze Ren ◽  
Enxu Yao ◽  
Xiaohang Wu ◽  
...  
Keyword(s):  
Dual Band ◽  
Total Absorption ◽  
Monolayer Mos2 ◽  
Grating Structure ◽  
Guided Mode ◽  
Dielectric Grating ◽  
Guided Mode Resonance

Large-range wavelength tunable guided-mode resonance filter based on dielectric grating

2019 ◽  
Vol 437 ◽  
pp. 271-275 ◽  
Author(s):  
Caiyu Li ◽  
Kun Zhang ◽  
Yelan Zhang ◽  
Yuyang Cheng ◽  
Weijin Kong
Keyword(s):  
Large Range ◽  
Wavelength Tunable ◽  
Guided Mode ◽  
Dielectric Grating ◽  
Guided Mode Resonance

Study on guided-mode resonance characteristic of multilayer dielectric grating with broadband and wide using-angle

2010 ◽  
Vol 19 (5) ◽  
pp. 054202 ◽  
Author(s):  
Wang Jian-Peng ◽  
Jin Yun-Xia ◽  
Ma Jian-Yong ◽  
Shao Jian-Da ◽  
Fan Zheng-Xiu
Keyword(s):  
Guided Mode ◽  
Resonance Characteristic ◽  
Dielectric Grating ◽  
Guided Mode Resonance ◽  
Multilayer Dielectric

scholarly journals Comparison of the Optical Planar Waveguide Sensors’ Characteristics Based on Guided-Mode Resonance

Symmetry ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1315
Author(s):  
S. Bellucci ◽  
V. Fitio ◽  
I. Yaremchuk ◽  
O. Vernyhor ◽  
A. Bendziak ◽  
...  
Keyword(s):  
Optical Sensors ◽  
Resonance Curve ◽  
Spectral Width ◽  
Dielectric Substrate ◽  
Angular Width ◽  
Guided Mode ◽  
Metal Grating ◽  
Dielectric Grating ◽  
Guided Mode Resonance ◽  
Angular Reflectance

A comparison of optical sensors’ characteristics based on guided-mode resonance has been carried out. It was considered a prism structure with a metal film, a metal grating on a metal substrate and a dielectric grating on a dielectric substrate. It is shown that the main characteristics are determined by the sensitivity of the constant propagation of the respective waveguides on a change in wavelength and a change in the refractive index of the tested medium. In addition, they depend on the full width at half maximum of the spectral or angular reflectance dependence. The corresponding analytical relationships obtained for the three types of sensors are almost the same. It is demonstrated that the ratio of the sensor spectral sensitivity on the resonance curve spectral width is equal to the ratio of the angular sensitivity on the angular width of the corresponding resonance curve for all three types of sensors.

scholarly journals High Performance of a Metal Layer-Assisted Guided-Mode Resonance Biosensor Modulated by Double-Grating

Biosensors ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 221
Author(s):  
Chengrui Zhang ◽  
Yi Zhou ◽  
Lan Mi ◽  
Jiong Ma ◽  
Xiang Wu ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Structural Parameters ◽  
Metal Layer ◽  
High Sensitivity ◽  
Grating Structure ◽  
Surface Sensitivity ◽  
Guided Mode ◽  
Guided Mode Resonance ◽  
Low Sensitivity

Guided-mode resonance (GMR) sensors are widely used as biosensors with the advantages of simple structure, easy detection schemes, high efficiency, and narrow linewidth. However, their applications are limited by their relatively low sensitivity (<200 nm/RIU) and in turn low figure of merit (FOM, <100 1/RIU). Many efforts have been made to enhance the sensitivity or FOM, separately. To enhance the sensitivity and FOM simultaneously for more sensitive sensing, we proposed a metal layer-assisted double-grating (MADG) structure with the evanescent field extending to the sensing region enabled by the metal reflector layer underneath the double-grating. The influence of structural parameters was systematically investigated. Bulk sensitivity of 550.0 nm/RIU and FOM of 1571.4 1/RIU were obtained after numerical optimization. Compared with a single-grating structure, the surface sensitivity of the double-grating structure for protein adsorption increases by a factor of 2.4 times. The as-proposed MADG has a great potential to be a biosensor with high sensitivity and high accuracy.

Enhanced light trapping in Ge-on-Si-on-insulator photodetector by guided mode resonance effect

2018 ◽  
Vol 124 (5) ◽  
pp. 053101
Author(s):  
Zhi Liu ◽  
Jietao Liu ◽  
Buwen Cheng ◽  
Jun Zheng ◽  
Chuanbo Li ◽  
...  
Keyword(s):  
Light Trapping ◽  
Resonance Effect ◽  
Guided Mode ◽  
Guided Mode Resonance

scholarly journals A Compact Detection Platform Based on Gradient Guided-Mode Resonance for Colorimetric and Fluorescence Liquid Assay Detection

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2797
Author(s):  
Jing-Jhong Gao ◽  
Ching-Wei Chiu ◽  
Kuo-Hsing Wen ◽  
Cheng-Sheng Huang
Keyword(s):  
Limit Of Detection ◽  
Detection System ◽  
Fluorescence Emission ◽  
Assay Sensitivity ◽  
Detection Range ◽  
Current Form ◽  
Guided Mode ◽  
Spectral Detection ◽  
Guided Mode Resonance ◽  
Colorimetric Assays

This paper presents a compact spectral detection system for common fluorescent and colorimetric assays. This system includes a gradient grating period guided-mode resonance (GGP-GMR) filter and charge-coupled device. In its current form, the GGP-GMR filter, which has a size of less than 2.5 mm, can achieve a spectral detection range of 500–700 nm. Through the direct measurement of the fluorescence emission, the proposed system was demonstrated to detect both the peak wavelength and its corresponding intensity. One fluorescent assay (albumin) and two colorimetric assays (albumin and creatinine) were performed to demonstrate the practical application of the proposed system for quantifying common liquid assays. The results of our system exhibited suitable agreement with those of a commercial spectrometer in terms of the assay sensitivity and limit of detection (LOD). With the proposed system, the fluorescent albumin, colorimetric albumin, and colorimetric creatinine assays achieved LODs of 40.99 and 398 and 25.49 mg/L, respectively. For a wide selection of biomolecules in point-of-care applications, the spectral detection range achieved by the GGP-GMR filter can be further extended and the simple and compact optical path configuration can be integrated with a lab-on-a-chip system.

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