The Brillouin gain of vector modes in a few-mode fiber

Abstract In this work, we demonstrate the measurement of the Brillouin gain spectra of vector modes in a few-mode fiber for the first time using a simple heterodyne detection technique. A tunable long period fiber grating is used to selectively excite the vector modes supported by the few-mode fiber...

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Autores principales:	Prabin Pradhan, Dipankar Sengupta, Lixian Wang, Christine Tremblay, Sophie LaRochelle, Bora Ung
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a194054878244cd0aa72182c95ba8d69
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spelling	oai:doaj.org-article:a194054878244cd0aa72182c95ba8d692021-12-02T11:41:21ZThe Brillouin gain of vector modes in a few-mode fiber10.1038/s41598-017-01621-72045-2322https://doaj.org/article/a194054878244cd0aa72182c95ba8d692017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01621-7https://doaj.org/toc/2045-2322Abstract In this work, we demonstrate the measurement of the Brillouin gain spectra of vector modes in a few-mode fiber for the first time using a simple heterodyne detection technique. A tunable long period fiber grating is used to selectively excite the vector modes supported by the few-mode fiber. Further, we demonstrate the non-destructive measurement of the absolute effective refractive indices (n eff ) of vector modes with ~10−4 accuracy based on the acquired Brillouin frequency shifts of the modes. The proposed technique represents a new tool for probing and controlling vector modes as well as modes carrying orbital angular momentum in optical fibers with potential applications in advanced optical communications and multi-parameter fiber-optic sensing.Prabin PradhanDipankar SenguptaLixian WangChristine TremblaySophie LaRochelleBora UngNature 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 Prabin Pradhan Dipankar Sengupta Lixian Wang Christine Tremblay Sophie LaRochelle Bora Ung The Brillouin gain of vector modes in a few-mode fiber
description	Abstract In this work, we demonstrate the measurement of the Brillouin gain spectra of vector modes in a few-mode fiber for the first time using a simple heterodyne detection technique. A tunable long period fiber grating is used to selectively excite the vector modes supported by the few-mode fiber. Further, we demonstrate the non-destructive measurement of the absolute effective refractive indices (n eff ) of vector modes with ~10−4 accuracy based on the acquired Brillouin frequency shifts of the modes. The proposed technique represents a new tool for probing and controlling vector modes as well as modes carrying orbital angular momentum in optical fibers with potential applications in advanced optical communications and multi-parameter fiber-optic sensing.
format	article
author	Prabin Pradhan Dipankar Sengupta Lixian Wang Christine Tremblay Sophie LaRochelle Bora Ung
author_facet	Prabin Pradhan Dipankar Sengupta Lixian Wang Christine Tremblay Sophie LaRochelle Bora Ung
author_sort	Prabin Pradhan
title	The Brillouin gain of vector modes in a few-mode fiber
title_short	The Brillouin gain of vector modes in a few-mode fiber
title_full	The Brillouin gain of vector modes in a few-mode fiber
title_fullStr	The Brillouin gain of vector modes in a few-mode fiber
title_full_unstemmed	The Brillouin gain of vector modes in a few-mode fiber
title_sort	brillouin gain of vector modes in a few-mode fiber
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/a194054878244cd0aa72182c95ba8d69
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The Brillouin gain of vector modes in a few-mode fiber

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