Singular optical characteristics generated by Fibonacci multilayers composed of PT-symmetric elements

In this paper, a class of one-dimensional (1D) Fibonacci quasi-periodic multilayers composed of two parity-time-symmetric (PT-symmetric) elements are designed. Their scattering spectra, transparencies, invisibilities, and other singular optical properties are investigated in detail. It is found that...

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Autores principales:	Fen Tang, Xiangbo Yang, Xiaomin Wang, Yao Zhang, Dongmei Deng, Hongzhan Liu, Zhongchao Wei
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Fibonacci Quasi-periodicity PT-symmetry Transparency Invisibility Physics QC1-999
Acceso en línea:	https://doaj.org/article/3102ea8c97964255803bb6509e3cdc53
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spelling	oai:doaj.org-article:3102ea8c97964255803bb6509e3cdc532021-11-28T04:31:05ZSingular optical characteristics generated by Fibonacci multilayers composed of PT-symmetric elements2211-379710.1016/j.rinp.2021.104993https://doaj.org/article/3102ea8c97964255803bb6509e3cdc532021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2211379721009980https://doaj.org/toc/2211-3797In this paper, a class of one-dimensional (1D) Fibonacci quasi-periodic multilayers composed of two parity-time-symmetric (PT-symmetric) elements are designed. Their scattering spectra, transparencies, invisibilities, and other singular optical properties are investigated in detail. It is found that three types of new systematic phases, ten types of new unidirectional transparencies, two types of new bidirectional transparencies and one type of new bidirectional invisibility are created by this class of interesting systems, which possess more types compared with the PT-symmetric periodic multilayers and the Thue–Morse multilayers composed of PT-symmetric elements. It can be seen that although the order degree of the Fibonacci multilayers is lower than that of the other two systems, their types of systematic phases, transparencies, and invisibilities are obtained, their types of systematic phases, transparencies, and invisibilities are more abundant. This proves that, as the order degree of the PT-symmetric system decreases, its types of singular optical properties become more abundant. This work sheds some light on the PT-symmetric optical structures and Fibonacci sequence, offering the possibility to widen their application field. Moreover, it provides a theoretical basis to design new optical devices.Fen TangXiangbo YangXiaomin WangYao ZhangDongmei DengHongzhan LiuZhongchao WeiElsevierarticleFibonacciQuasi-periodicityPT-symmetryTransparencyInvisibilityPhysicsQC1-999ENResults in Physics, Vol 31, Iss , Pp 104993- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Fibonacci Quasi-periodicity PT-symmetry Transparency Invisibility Physics QC1-999
spellingShingle	Fibonacci Quasi-periodicity PT-symmetry Transparency Invisibility Physics QC1-999 Fen Tang Xiangbo Yang Xiaomin Wang Yao Zhang Dongmei Deng Hongzhan Liu Zhongchao Wei Singular optical characteristics generated by Fibonacci multilayers composed of PT-symmetric elements
description	In this paper, a class of one-dimensional (1D) Fibonacci quasi-periodic multilayers composed of two parity-time-symmetric (PT-symmetric) elements are designed. Their scattering spectra, transparencies, invisibilities, and other singular optical properties are investigated in detail. It is found that three types of new systematic phases, ten types of new unidirectional transparencies, two types of new bidirectional transparencies and one type of new bidirectional invisibility are created by this class of interesting systems, which possess more types compared with the PT-symmetric periodic multilayers and the Thue–Morse multilayers composed of PT-symmetric elements. It can be seen that although the order degree of the Fibonacci multilayers is lower than that of the other two systems, their types of systematic phases, transparencies, and invisibilities are obtained, their types of systematic phases, transparencies, and invisibilities are more abundant. This proves that, as the order degree of the PT-symmetric system decreases, its types of singular optical properties become more abundant. This work sheds some light on the PT-symmetric optical structures and Fibonacci sequence, offering the possibility to widen their application field. Moreover, it provides a theoretical basis to design new optical devices.
format	article
author	Fen Tang Xiangbo Yang Xiaomin Wang Yao Zhang Dongmei Deng Hongzhan Liu Zhongchao Wei
author_facet	Fen Tang Xiangbo Yang Xiaomin Wang Yao Zhang Dongmei Deng Hongzhan Liu Zhongchao Wei
author_sort	Fen Tang
title	Singular optical characteristics generated by Fibonacci multilayers composed of PT-symmetric elements
title_short	Singular optical characteristics generated by Fibonacci multilayers composed of PT-symmetric elements
title_full	Singular optical characteristics generated by Fibonacci multilayers composed of PT-symmetric elements
title_fullStr	Singular optical characteristics generated by Fibonacci multilayers composed of PT-symmetric elements
title_full_unstemmed	Singular optical characteristics generated by Fibonacci multilayers composed of PT-symmetric elements
title_sort	singular optical characteristics generated by fibonacci multilayers composed of pt-symmetric elements
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/3102ea8c97964255803bb6509e3cdc53
work_keys_str_mv	AT fentang singularopticalcharacteristicsgeneratedbyfibonaccimultilayerscomposedofptsymmetricelements AT xiangboyang singularopticalcharacteristicsgeneratedbyfibonaccimultilayerscomposedofptsymmetricelements AT xiaominwang singularopticalcharacteristicsgeneratedbyfibonaccimultilayerscomposedofptsymmetricelements AT yaozhang singularopticalcharacteristicsgeneratedbyfibonaccimultilayerscomposedofptsymmetricelements AT dongmeideng singularopticalcharacteristicsgeneratedbyfibonaccimultilayerscomposedofptsymmetricelements AT hongzhanliu singularopticalcharacteristicsgeneratedbyfibonaccimultilayerscomposedofptsymmetricelements AT zhongchaowei singularopticalcharacteristicsgeneratedbyfibonaccimultilayerscomposedofptsymmetricelements
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Singular optical characteristics generated by Fibonacci multilayers composed of PT-symmetric elements

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