Bravo Acha, MikelBaptista, José ManuelSantos, José LuísLópez-Amo Sáinz, ManuelFrazão, Orlando2019-12-232019-12-232014M. Bravo, J. M. Baptista, J. L. Santos, M. López-Amo and O. Frazão, 'Micro-Displacement Sensor Combined With a Fiber Ring Interrogated by an Optical Time-Domain Reflectometer,' in IEEE Sensors Journal, vol. 14, no. 3, pp. 793-796, March 2014.1558-174810.1109/JSEN.2013.2288596https://academica-e.unavarra.es/handle/2454/35963A micro-displacement sensing head based on two aligned cleaved fibers inserted into an optical fiber ring and interrogated by an OTDR is presented. The sensor configuration is characterized for measuring both longitudinal and axial microdisplacement, showing a sensitivity of 0.07 dB/mm and 2.67 dB/mm for longitudinal and axial micro-displacement, respectively. A multiplexing system using two of these configurations is also studied.5 p.application/pdfeng© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other workFiber ringAir-gapOTDRDisplacement sensorinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess