Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/90403
Type: Artigo de periódico
Title: Intensity Curvature Sensor Based On Photonic Crystal Fiber With Three Coupled Cores
Author: Martins H.
Marques M.B.
Jorge P.
Cordeiro C.M.B.
Frazao O.
Abstract: An intensity curvature sensor using a Photonic Crystal Fiber (PCF) with three coupled cores is proposed. The three cores were aligned and there was an air hole between each two consecutive cores. The fiber had a low air filling fraction, which means that the cores remain coupled in the wavelength region studied. Due to this coupling, interference is obtained in the fiber output even if just a single core is illuminated. A configuration using reflection interrogation, which used a section fiber with 0.13 m as the sensing head, was characterized for curvature sensing. When the fiber is bended along the plane of the cores, one of the lateral cores will be stretched and the other compressed. This changes the coupling coefficient between the three cores, changing the output optical power intensity. The sensitivity of the sensing head was strongly dependent on the direction of bending, having its maximum when the bending direction was along the plane of the cores. A maximum curvature sensitivity of 2.0 dB/m -1 was demonstrated between 0 m and 2.8 m. © 2012 Elsevier B.V. All rights reserved.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/j.optcom.2012.07.074
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84867576992&partnerID=40&md5=62f483a0627c668a702009ccfedd76a0
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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