{"title":"Cascaded HfO2/SiO2 microstructure for symmetrical two-port beam dispersion","authors":"Hong Zou, Bo Wang","doi":"10.1080/09205071.2023.2248983","DOIUrl":null,"url":null,"abstract":"A new type of double-dielectric layer two-port beam splitter grating based on sandwich structure is proposed. This grating has the characteristic of zeroth order elimination. The structural parameters of the grating are optimized by the rigorous coupled-wave analysis (RCWA) and simulated annealing algorithm (SAA) to achieve the best performance of the grating. For both TE and TM polarizations, the diffraction efficiencies of ±1st orders can reach 49.34% and 49.15%, respectively. Meanwhile, the efficiency of the zeroth order is about only 0.5% for both polarizations. This novel microstructure has the significant characteristic of zeroth order elimination. Moreover, this grating has a wide incident bandwidth and excellent manufacturing tolerance. The simplified modal method (SMM) is also used to study the specific process of energy coupling in the grating.","PeriodicalId":15650,"journal":{"name":"Journal of Electromagnetic Waves and Applications","volume":"68 1","pages":"1435 - 1448"},"PeriodicalIF":1.2000,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electromagnetic Waves and Applications","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1080/09205071.2023.2248983","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
A new type of double-dielectric layer two-port beam splitter grating based on sandwich structure is proposed. This grating has the characteristic of zeroth order elimination. The structural parameters of the grating are optimized by the rigorous coupled-wave analysis (RCWA) and simulated annealing algorithm (SAA) to achieve the best performance of the grating. For both TE and TM polarizations, the diffraction efficiencies of ±1st orders can reach 49.34% and 49.15%, respectively. Meanwhile, the efficiency of the zeroth order is about only 0.5% for both polarizations. This novel microstructure has the significant characteristic of zeroth order elimination. Moreover, this grating has a wide incident bandwidth and excellent manufacturing tolerance. The simplified modal method (SMM) is also used to study the specific process of energy coupling in the grating.
期刊介绍：
Journal of Electromagnetic Waves and Applications covers all aspects of electromagnetic wave theory and its applications. It publishes original papers and review articles on new theories, methodologies, and computational techniques, as well as interpretations of both theoretical and experimental results.
The scope of this Journal remains broad and includes the following topics:
wave propagation theory
propagation in random media
waves in composites and amorphous materials
optical and millimeter wave techniques
fiber/waveguide optics
optical sensing
sub-micron structures
nano-optics and sub-wavelength effects
photonics and plasmonics
atmospherics and ionospheric effects on wave propagation
geophysical subsurface probing
remote sensing
inverse scattering
antenna theory and applications
fields and network theory
transients
radar measurements and applications
active experiments using space vehicles
electromagnetic compatibility and interferometry
medical applications and biological effects
ferrite devices
high power devices and systems
numerical methods
The aim of this Journal is to report recent advancements and modern developments in the electromagnetic science and new exciting applications covering the aforementioned fields.
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