基于石墨烯的宽带多功能中 THz 偏振转换器

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2024-08-09 DOI:10.1109/JPHOT.2024.3441245

Vinit Singh Yadav;Amalendu Patnaik

{"title":"基于石墨烯的宽带多功能中 THz 偏振转换器","authors":"Vinit Singh Yadav;Amalendu Patnaik","doi":"10.1109/JPHOT.2024.3441245","DOIUrl":null,"url":null,"abstract":"A graphene–based multifunctional polarization converter for the mid–THz band is proposed in this work and its electromagnetic behavior is explained with the help of the physics behind it and the circuital theory. The novelty of the proposed reflector lies in the fact that a linear–to–linear (LL) polarization conversion takes place for a chemical potential in 0.3–0.6 eV and a linear–to–circular (LC) in 0.7–1.0 eV across the mono–layered graphene over a large oblique angle (\n<inline-formula><tex-math>$\\approx$</tex-math></inline-formula>\n 40\n<inline-formula><tex-math>$^{\\circ }$</tex-math></inline-formula>\n) of the incident wave. The fractional 3 dB axial ratio bandwidth in the case of LC polarization conversion is 81%. Moreover, for LL polarization conversion it gives 31% fractional bandwidth for polarization conversion ratio (PCR) more than 85%. The structure maintains a thickness of \n<inline-formula><tex-math>$\\lambda$</tex-math></inline-formula>\n/7.5 and a lattice size of \n<inline-formula><tex-math>$\\lambda$</tex-math></inline-formula>\n/18. The proposed multi–functional polarization converter can act as a promising candidate for THz indoor communication.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"16 5","pages":"1-8"},"PeriodicalIF":2.1000,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10632621","citationCount":"0","resultStr":"{\"title\":\"A Broadband Graphene Based Multi-Functional mid-THz Polarization Converter\",\"authors\":\"Vinit Singh Yadav;Amalendu Patnaik\",\"doi\":\"10.1109/JPHOT.2024.3441245\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A graphene–based multifunctional polarization converter for the mid–THz band is proposed in this work and its electromagnetic behavior is explained with the help of the physics behind it and the circuital theory. The novelty of the proposed reflector lies in the fact that a linear–to–linear (LL) polarization conversion takes place for a chemical potential in 0.3–0.6 eV and a linear–to–circular (LC) in 0.7–1.0 eV across the mono–layered graphene over a large oblique angle (\\n<inline-formula><tex-math>$\\\\approx$</tex-math></inline-formula>\\n 40\\n<inline-formula><tex-math>$^{\\\\circ }$</tex-math></inline-formula>\\n) of the incident wave. The fractional 3 dB axial ratio bandwidth in the case of LC polarization conversion is 81%. Moreover, for LL polarization conversion it gives 31% fractional bandwidth for polarization conversion ratio (PCR) more than 85%. The structure maintains a thickness of \\n<inline-formula><tex-math>$\\\\lambda$</tex-math></inline-formula>\\n/7.5 and a lattice size of \\n<inline-formula><tex-math>$\\\\lambda$</tex-math></inline-formula>\\n/18. The proposed multi–functional polarization converter can act as a promising candidate for THz indoor communication.\",\"PeriodicalId\":13204,\"journal\":{\"name\":\"IEEE Photonics Journal\",\"volume\":\"16 5\",\"pages\":\"1-8\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2024-08-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10632621\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Photonics Journal\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10632621/\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Journal","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10632621/","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

摘要

本文提出了一种基于石墨烯的中 THz 波段多功能极化转换器，并借助其背后的物理学和电路理论解释了其电磁行为。所提出的反射器的新颖之处在于，在化学势为 0.3-0.6 eV 和 0.7-1.0 eV 的情况下，在入射波的大斜角（$\approx$ 40$^{\circ }$）上，穿过单层石墨烯的线性到线性（LL）极化转换和线性到圆形（LC）极化转换都会发生。LC 偏振转换情况下的分数 3 dB 轴向比带宽为 81%。此外，对于 LL 偏振转换，它能提供 31% 的分数带宽，使偏振转换率（PCR）超过 85%。该结构的厚度为$\lambda$/7.5，晶格尺寸为$\lambda$/18。所提出的多功能偏振转换器可作为太赫兹室内通信的理想候选器件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

A Broadband Graphene Based Multi-Functional mid-THz Polarization Converter

A graphene–based multifunctional polarization converter for the mid–THz band is proposed in this work and its electromagnetic behavior is explained with the help of the physics behind it and the circuital theory. The novelty of the proposed reflector lies in the fact that a linear–to–linear (LL) polarization conversion takes place for a chemical potential in 0.3–0.6 eV and a linear–to–circular (LC) in 0.7–1.0 eV across the mono–layered graphene over a large oblique angle (

$\approx$

$^{\circ }$

) of the incident wave. The fractional 3 dB axial ratio bandwidth in the case of LC polarization conversion is 81%. Moreover, for LL polarization conversion it gives 31% fractional bandwidth for polarization conversion ratio (PCR) more than 85%. The structure maintains a thickness of

$\lambda$

/7.5 and a lattice size of

$\lambda$

/18. The proposed multi–functional polarization converter can act as a promising candidate for THz indoor communication.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.