Chalcogenide Glass Microfibers for Mid-Infrared Optics

With diameters close to the wavelength of the guided light, optical microfibers (MFs) can guide light with tight optical confinement, strong evanescent fields and manageable waveguide dispersion and have been widely investigated in the past decades for a variety of applications. Compared to silica M...

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Autores principales:	Dawei Cai, Yu Xie, Xin Guo, Pan Wang, Limin Tong
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	mid-infrared (mid-IR) chalcogenide glasses (ChGs) optical microfibers (MFs) supercontinuum (SC) molecular sensing Applied optics. Photonics TA1501-1820
Acceso en línea:	https://doaj.org/article/913301d768144868b12716856ee4d16e
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spelling	oai:doaj.org-article:913301d768144868b12716856ee4d16e2021-11-25T18:43:23ZChalcogenide Glass Microfibers for Mid-Infrared Optics10.3390/photonics81104972304-6732https://doaj.org/article/913301d768144868b12716856ee4d16e2021-11-01T00:00:00Zhttps://www.mdpi.com/2304-6732/8/11/497https://doaj.org/toc/2304-6732With diameters close to the wavelength of the guided light, optical microfibers (MFs) can guide light with tight optical confinement, strong evanescent fields and manageable waveguide dispersion and have been widely investigated in the past decades for a variety of applications. Compared to silica MFs, which are ideal for working in visible and near-infrared regions, chalcogenide glass (ChG) MFs are promising for mid-infrared (mid-IR) optics, owing to their easy fabrication, broad-band transparency and high nonlinearity, and have been attracting increasing attention in applications ranging from near-field coupling and molecular sensing to nonlinear optics. Here, we review this emerging field, mainly based on its progress in the last decade. Starting from the high-temperature taper drawing technique for MF fabrication, we introduce basic mid-IR waveguiding properties of typical ChG MFs made of As<sub>2</sub>S<sub>3</sub> and As<sub>2</sub>Se<sub>3</sub>. Then, we focus on ChG-MF-based passive optical devices, including optical couplers, resonators and gratings and active and nonlinear applications of ChG MFs for mid-IR Raman lasers, frequency combs and supercontinuum (SC) generation. MF-based spectroscopy and chemical/biological sensors are also introduced. Finally, we conclude the review with a brief summary and an outlook on future challenges and opportunities of ChG MFs.Dawei CaiYu XieXin GuoPan WangLimin TongMDPI AGarticlemid-infrared (mid-IR)chalcogenide glasses (ChGs)optical microfibers (MFs)supercontinuum (SC)molecular sensingApplied optics. PhotonicsTA1501-1820ENPhotonics, Vol 8, Iss 497, p 497 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mid-infrared (mid-IR) chalcogenide glasses (ChGs) optical microfibers (MFs) supercontinuum (SC) molecular sensing Applied optics. Photonics TA1501-1820
spellingShingle	mid-infrared (mid-IR) chalcogenide glasses (ChGs) optical microfibers (MFs) supercontinuum (SC) molecular sensing Applied optics. Photonics TA1501-1820 Dawei Cai Yu Xie Xin Guo Pan Wang Limin Tong Chalcogenide Glass Microfibers for Mid-Infrared Optics
description	With diameters close to the wavelength of the guided light, optical microfibers (MFs) can guide light with tight optical confinement, strong evanescent fields and manageable waveguide dispersion and have been widely investigated in the past decades for a variety of applications. Compared to silica MFs, which are ideal for working in visible and near-infrared regions, chalcogenide glass (ChG) MFs are promising for mid-infrared (mid-IR) optics, owing to their easy fabrication, broad-band transparency and high nonlinearity, and have been attracting increasing attention in applications ranging from near-field coupling and molecular sensing to nonlinear optics. Here, we review this emerging field, mainly based on its progress in the last decade. Starting from the high-temperature taper drawing technique for MF fabrication, we introduce basic mid-IR waveguiding properties of typical ChG MFs made of As<sub>2</sub>S<sub>3</sub> and As<sub>2</sub>Se<sub>3</sub>. Then, we focus on ChG-MF-based passive optical devices, including optical couplers, resonators and gratings and active and nonlinear applications of ChG MFs for mid-IR Raman lasers, frequency combs and supercontinuum (SC) generation. MF-based spectroscopy and chemical/biological sensors are also introduced. Finally, we conclude the review with a brief summary and an outlook on future challenges and opportunities of ChG MFs.
format	article
author	Dawei Cai Yu Xie Xin Guo Pan Wang Limin Tong
author_facet	Dawei Cai Yu Xie Xin Guo Pan Wang Limin Tong
author_sort	Dawei Cai
title	Chalcogenide Glass Microfibers for Mid-Infrared Optics
title_short	Chalcogenide Glass Microfibers for Mid-Infrared Optics
title_full	Chalcogenide Glass Microfibers for Mid-Infrared Optics
title_fullStr	Chalcogenide Glass Microfibers for Mid-Infrared Optics
title_full_unstemmed	Chalcogenide Glass Microfibers for Mid-Infrared Optics
title_sort	chalcogenide glass microfibers for mid-infrared optics
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/913301d768144868b12716856ee4d16e
work_keys_str_mv	AT daweicai chalcogenideglassmicrofibersformidinfraredoptics AT yuxie chalcogenideglassmicrofibersformidinfraredoptics AT xinguo chalcogenideglassmicrofibersformidinfraredoptics AT panwang chalcogenideglassmicrofibersformidinfraredoptics AT limintong chalcogenideglassmicrofibersformidinfraredoptics
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Chalcogenide Glass Microfibers for Mid-Infrared Optics

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