López Aldaba, AitorRodrigues Pinto, Ana MargaridaLópez-Amo Sáinz, ManuelFrazão, OrlandoSantos, José LuísBaptista, José ManuelBaierl, HardyAuguste, Jean-LouisJamier, RaphaelRoy, Philippe2018-09-192018-09-1920151424-822010.3390/s150408042https://academica-e.unavarra.es/handle/2454/30731A hybrid Fabry-Pérot cavity sensing head based on a four-bridge microstructured fiber is characterized for temperature sensing. The characterization of this cavity is performed numerically and experimentally in the L-band. The sensing head output signal presents a linear variation with temperature changes, showing a sensitivity of 12.5 pm/°C. Moreover, this Fabry-Pérot cavity exhibits good sensitivity to polarization changes and high stability over time.12 p.application/pdfeng© 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license.BirefringenceFiber sensorMicrostructured fiberPhotonic crystal fiberTemperature sensorinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess