Fano resonance sensing based on coupling of a sub-wavelength grating and an all-dielectric multilayer film under angle modulation
| Autor: | Yangmei Xu, Xinde Zhou, Chunyan Xiao, Ying Chen, Qiguang Zhu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Angle modulation Guided-mode resonance business.industry Physics::Optics Fano resonance Dielectric Grating 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics Optics 0103 physical sciences Figure of merit Electrical and Electronic Engineering business Engineering (miscellaneous) Refractive index Photonic crystal |
| Zdroj: | Applied optics. 60(10) |
| ISSN: | 1539-4522 |
| Popis: | Based on the diffraction effect of the waveguide grating, a hybrid structure of an all-dielectric multilayer film and a sub-wavelength dielectric grating is proposed. The discrete state provided in the sub-wavelength waveguide grating couples with the continuous state provided in the Fabry–Perot cavity (F–P cavity) containing the photonic crystal to form a Fano resonance. The relationship between the structural parameter and the incident angle is analyzed by numerical simulation. The result shows that the figure of merit (FOM) value is 533.2 R I U − 1 . This structure provides an effective theoretical basis for the realization of Fano resonance in the all-dielectric sensing structure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|