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An All Fiber Intrinsic Fabry-Perot Interferometer Based on an Air-Microcavity
Daniel Jauregui-Vazquez 1 , Julián Moisés Estudillo-Ayala 1 , Roberto Rojas-Laguna 1 , Everardo Vargas-Rodríguez, 2 Juan M. Sierra-Hernández, 1 Juan C. Hernández-García 1 , Ruth I. Mata-Chávez 2
1  Optoelectrónica-CA, Departamento de Electrónica, DICIS, Universidad de Guanajuato, Carr. Salamanca-Valle km 3.5+1.8, Palo Blanco, Salamanca, Gto 36855, Mexico; s:(J.M.E.-A.);(R.R.-L.);(J.M.S.-H.);(J.C.H.-G.)
2  Espintrónica y Óptica Aplicada-CA, Departamento de Estudios Multidiciplinarios, DICIS, Universidad de Guanajuato, Avenida Universidad s/n, Col. Yacatitas, Yuriria, Gto 38940, Mexico; s:(E.V.-R.);(R.I.M.-C.)

Published: 14 May 2013 by MDPI in Sensors
MDPI, Volume 13; 10.3390/s130506355
Abstract: In this work an Intrinsic Fabry-Perot Interferometer (IFPI) based on an air-microcavity is presented. Here the air microcavity, with silica walls, is formed at a segment of a hollow core photonic crystal fiber (HCPCF), which is fusion spliced with a single mode fiber (SMF). Moreover, the spectral response of the IFPI is experimentally characterized and some results are provided. Finally, the viability to use the IFPI to implement a simple, compact size, and low cost refractive index sensor is briefly analyzed.
Keywords: Fabry-Perot interferometer, microcavity, hollow core photonic crystal fiber, refractive index sensor, 78.20.Ci, 07.60.Ly
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