Bravo Acha, MikelAngulo Vinuesa, X.Martín López, SoniaLópez-Amo Sáinz, ManuelGonzález Herráez, Miguel2019-12-232019-12-232013M. Bravo, X. Angulo-Vinuesa, S. Martin-Lopez, M. López-Amo and M. González-Herráez, 'Slow-Light and Enhanced Sensitivity in a Displacement Sensor Using a Lossy Fiber-Based Ring Resonator,' in Journal of Lightwave Technology, vol. 31, no. 23, pp. 3752-3757, Dec.1, 2013.0733-872410.1109/JLT.2013.2288455https://academica-e.unavarra.es/handle/2454/35949Along the last years, much debate has been done on the efficiency of slow-light phenomena in order to enhance lightmatter interactions, especially for sensing purposes. This improvement could be key to develop more compact and sensitive devices. In this work we develop an all-fiber submicrometric displacement sensor using slow-light sensitivity enhancement in a lossy ring resonator. In the proposed structure the losses produced by the displacement of a mechanic transducer can be translated into strong variations of group index and therefore strong transmittance variations. We show that this effect is strictly related to slow light, and not related to confinement effects or any other.6 p.application/pdfeng© 2013 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 workSlow lightRing resonatorsGroup delayGroup indexKerr effectinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess