Cascaded HfO2/SiO2 microstructure for symmetrical two-port beam dispersion

IF 1.2 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electromagnetic Waves and Applications Pub Date : 2023-08-21 DOI:10.1080/09205071.2023.2248983

Hong Zou, Bo Wang

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.

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对称双口光束色散的级联HfO2/SiO2微观结构

提出了一种新型的基于夹层结构的双介电层双端口分束光栅。该光栅具有零阶消去特性。采用严格耦合波分析(RCWA)和模拟退火算法(SAA)对光栅的结构参数进行优化，以达到光栅的最佳性能。对于TE和TM偏振，±一阶衍射效率分别达到49.34%和49.15%。同时，两种极化的零阶效率仅为0.5%左右。这种新型微结构具有明显的零阶消去特性。此外，该光栅具有较宽的入射带宽和优良的制造公差。采用简化模态法(SMM)研究了光栅内部能量耦合的具体过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Electromagnetic Waves and Applications 物理-工程：电子与电气

CiteScore

3.60

自引率

7.70%

发文量

116

审稿时长

3.3 months

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.