Tunable TE/TM mode converter with an orthogonal graphene-based grating structure

doi:10.1140/epjs/s11734-021-00382-9

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	Tunable TE/TM mode converter with an orthogonal graphene-based grating structure
	Y. Q. Wang; W. J. Shi; Q. Li; Y. F. Chen; J. C. Wang and W. Liu
	2022
发表期刊	European Physical Journal-Special Topics
ISSN	1951-6355
卷号	231 期号:4 页码:589-595
摘要	A novel TM/TE polarization converter constructed with orthogonal double-layer graphene gratings is proposed. The high-performance TM/TE polarization conversion was explored by optimizing the Fermi energy and geometric parameters of the two-layer graphene gratings. As the Fermi level of graphene is dynamically adjustable, tunable polarization modulation can be achieved by the same design. Here we utilize the finite element method and improved coupled-mode theory to simulate and verify the conversion and modulation characteristics of TM and TE polarization. Proof-of-concept experiments demonstrated that this TM/TE converter provided excellent optical efficiency in polarization conversion and strong modulation stability against incident wave angle (up to 30 degrees) and polarization status. This simple and easyto-implement grating structure paves the way for the development of future micro-nano devices such as unimodal filters, and its functions can be further translated to study absorption and reflection spectra in nanophotonic applications.
DOI	10.1140/epjs/s11734-021-00382-9
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收录类别	sci
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67197
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Q. Wang,W. J. Shi,Q. Li,et al. Tunable TE/TM mode converter with an orthogonal graphene-based grating structure[J]. European Physical Journal-Special Topics,2022,231(4):589-595.
APA	Y. Q. Wang,W. J. Shi,Q. Li,Y. F. Chen,&J. C. Wang and W. Liu.(2022).Tunable TE/TM mode converter with an orthogonal graphene-based grating structure.European Physical Journal-Special Topics,231(4),589-595.
MLA	Y. Q. Wang,et al."Tunable TE/TM mode converter with an orthogonal graphene-based grating structure".European Physical Journal-Special Topics 231.4(2022):589-595.

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