Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/86011
Type: Artigo de periódico
Title: Tapered Grin Fiber Microsensor
Author: Beltran-Mejia F.
Biazoli C.R.
Cordeiro C.M.B.
Abstract: The sensitivity of an optical fiber microsensor based on inter-modal interference can be considerably improved by tapering a short extension of the multimode fiber. In the case of Graded Index fibers with a parabolic refractive index profile, a meridional ray exhibits a sinusoidal path. When these fibers are tapered, the period of the propagated beam decrease down-taper and increase up-taper. We take advantage of this modulation -along with the enhanced overlap between the evanescent field and the external medium- to substantially increase the sensitivity of these devices by tuning the sensor's maximum sensitivity wavelength. Moreover, the extension of this device is reduced by one order of magnitude, making it more propitious for reduced space applications. Numerical and experimental results demonstrate the success and feasibility of this approach.
Editor: Optical Society of American (OSA)
Rights: fechado
Identifier DOI: 10.1364/OE.22.030432
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84919625803&partnerID=40&md5=edd05effe746ab9189463fdb08153b5a
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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