López Aldaba, AitorAuguste, Jean-LouisJamier, RaphaelRoy, PhilippeLópez-Amo Sáinz, Manuel2019-09-162019-09-162017A. Lopez-Aldaba, J.-L. Auguste, R. Jamier, P. Roy, and M. Lopez-Amo 'Simultaneous and quasi-independent strain and temperature sensor based on microstructured optical fiber', Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103233I (23 April 2017); https://doi.org/10.1117/12.22650520277-786X10.1117/12.2265052https://academica-e.unavarra.es/handle/2454/34853In this paper, a new sensor system for simultaneous and quasi-independent strain and temperature measurements is presented. The interrogation of the sensing head has been carried out by monitoring the FFT phase variations of two of the microstructured optical fiber (MOF) cavity interference frequencies. This method is independent of the signal amplitude and also avoids the need to track the wavelength evolution in the spectrum, which can be a handicap when there are multiple interference frequency components with different sensitivities. The sensor is operated within a range of temperature of 30°C-75°C, and 380µɛ of maximum strain were applied; being the sensitivities achieved of 127.5pm/°C and -19.1pm/µɛ respectively. Because the system uses an optical interrogator as unique active element, the system presents a cost-effective feature.4 p.application/pdfeng© 2017 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, or modification of the contents of the publication are prohibited.Microstructured optical fiberFiber sensorTemperature sensingStrain sensingSimultaneous sensinginfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccess