Two-port connecting-layer-based sandwiched grating by a polarization-independent design

Abstract In this paper, a two-port connecting-layer-based sandwiched beam splitter grating with polarization-independent property is reported and designed. Such the grating can separate the transmission polarized light into two diffraction orders with equal energies, which can realize the nearly 50/...

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Autores principales:	Hongtao Li, Bo Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8e25257c6fe943ebb37605662e03f138
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spelling	oai:doaj.org-article:8e25257c6fe943ebb37605662e03f1382021-12-02T16:08:00ZTwo-port connecting-layer-based sandwiched grating by a polarization-independent design10.1038/s41598-017-01424-w2045-2322https://doaj.org/article/8e25257c6fe943ebb37605662e03f1382017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01424-whttps://doaj.org/toc/2045-2322Abstract In this paper, a two-port connecting-layer-based sandwiched beam splitter grating with polarization-independent property is reported and designed. Such the grating can separate the transmission polarized light into two diffraction orders with equal energies, which can realize the nearly 50/50 output with good uniformity. For the given wavelength of 800 nm and period of 780 nm, a simplified modal method can design a optimal duty cycle and the estimation value of the grating depth can be calculated based on it. In order to obtain the precise grating parameters, a rigorous coupled-wave analysis can be employed to optimize grating parameters by seeking for the precise grating depth and the thickness of connecting layer. Based on the optimized design, a high-efficiency two-port output grating with the wideband performances can be gained. Even more important, diffraction efficiencies are calculated by using two analytical methods, which are proved to be coincided well with each other. Therefore, the grating is significant for practical optical photonic element in engineering.Hongtao LiBo WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hongtao Li Bo Wang Two-port connecting-layer-based sandwiched grating by a polarization-independent design
description	Abstract In this paper, a two-port connecting-layer-based sandwiched beam splitter grating with polarization-independent property is reported and designed. Such the grating can separate the transmission polarized light into two diffraction orders with equal energies, which can realize the nearly 50/50 output with good uniformity. For the given wavelength of 800 nm and period of 780 nm, a simplified modal method can design a optimal duty cycle and the estimation value of the grating depth can be calculated based on it. In order to obtain the precise grating parameters, a rigorous coupled-wave analysis can be employed to optimize grating parameters by seeking for the precise grating depth and the thickness of connecting layer. Based on the optimized design, a high-efficiency two-port output grating with the wideband performances can be gained. Even more important, diffraction efficiencies are calculated by using two analytical methods, which are proved to be coincided well with each other. Therefore, the grating is significant for practical optical photonic element in engineering.
format	article
author	Hongtao Li Bo Wang
author_facet	Hongtao Li Bo Wang
author_sort	Hongtao Li
title	Two-port connecting-layer-based sandwiched grating by a polarization-independent design
title_short	Two-port connecting-layer-based sandwiched grating by a polarization-independent design
title_full	Two-port connecting-layer-based sandwiched grating by a polarization-independent design
title_fullStr	Two-port connecting-layer-based sandwiched grating by a polarization-independent design
title_full_unstemmed	Two-port connecting-layer-based sandwiched grating by a polarization-independent design
title_sort	two-port connecting-layer-based sandwiched grating by a polarization-independent design
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8e25257c6fe943ebb37605662e03f138
work_keys_str_mv	AT hongtaoli twoportconnectinglayerbasedsandwichedgratingbyapolarizationindependentdesign AT bowang twoportconnectinglayerbasedsandwichedgratingbyapolarizationindependentdesign
_version_	1718384670665605120

Two-port connecting-layer-based sandwiched grating by a polarization-independent design

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