Power Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications

Abstract Large core optical multimode fiber provides benefits such as a large light-coupling tolerance, easy handling, and delivery of higher light power without undesirable nonlinear effects. In this research, we exploit the effects of external perturbation on the power flow within the large core f...

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Autores principales:	Sen Qian, Yang Xu, Lisheng Zhong, Lei Su
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/51c5b3794cac40fa8a8d3e8f89d3ad23
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spelling	oai:doaj.org-article:51c5b3794cac40fa8a8d3e8f89d3ad232021-12-02T16:06:32ZPower Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications10.1038/s41598-017-01117-42045-2322https://doaj.org/article/51c5b3794cac40fa8a8d3e8f89d3ad232017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01117-4https://doaj.org/toc/2045-2322Abstract Large core optical multimode fiber provides benefits such as a large light-coupling tolerance, easy handling, and delivery of higher light power without undesirable nonlinear effects. In this research, we exploit the effects of external perturbation on the power flow within the large core fiber and present two relevant applications, namely a perturbation sensor and a doughnut beam tuner. Since conventional multimode fiber power flow model does not take into consideration the perturbation effect, we modify the power flow model so that the influence of time varying perturbation can be theoretically analyzed. Based on our theory, we further conduct the numerical simulation and experiments on these two applications. For the fiber vibration sensor, the proposed numerical model shows that the sensor sensitivity depends on the intensity profile of the launched beam and also the higher-order harmonics that were not reported previously can become interferences to affect the signal. For the beam tuner application, we prove both theoretically and experimentally that the doughnut intensity profile at the fiber output can be tuned in real-time by applying external perturbations to the fiber. We expect that the results can be useful to further exploit the external perturbation on large core fiber in various applications.Sen QianYang XuLisheng ZhongLei SuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sen Qian Yang Xu Lisheng Zhong Lei Su Power Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications
description	Abstract Large core optical multimode fiber provides benefits such as a large light-coupling tolerance, easy handling, and delivery of higher light power without undesirable nonlinear effects. In this research, we exploit the effects of external perturbation on the power flow within the large core fiber and present two relevant applications, namely a perturbation sensor and a doughnut beam tuner. Since conventional multimode fiber power flow model does not take into consideration the perturbation effect, we modify the power flow model so that the influence of time varying perturbation can be theoretically analyzed. Based on our theory, we further conduct the numerical simulation and experiments on these two applications. For the fiber vibration sensor, the proposed numerical model shows that the sensor sensitivity depends on the intensity profile of the launched beam and also the higher-order harmonics that were not reported previously can become interferences to affect the signal. For the beam tuner application, we prove both theoretically and experimentally that the doughnut intensity profile at the fiber output can be tuned in real-time by applying external perturbations to the fiber. We expect that the results can be useful to further exploit the external perturbation on large core fiber in various applications.
format	article
author	Sen Qian Yang Xu Lisheng Zhong Lei Su
author_facet	Sen Qian Yang Xu Lisheng Zhong Lei Su
author_sort	Sen Qian
title	Power Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications
title_short	Power Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications
title_full	Power Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications
title_fullStr	Power Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications
title_full_unstemmed	Power Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications
title_sort	power flow in a large-core multimode fiber under external perturbation and its applications
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/51c5b3794cac40fa8a8d3e8f89d3ad23
work_keys_str_mv	AT senqian powerflowinalargecoremultimodefiberunderexternalperturbationanditsapplications AT yangxu powerflowinalargecoremultimodefiberunderexternalperturbationanditsapplications AT lishengzhong powerflowinalargecoremultimodefiberunderexternalperturbationanditsapplications AT leisu powerflowinalargecoremultimodefiberunderexternalperturbationanditsapplications
_version_	1718384960544440320

Power Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications

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