Pérez Herrera, Rosa AnaSoares, LilianaSilva, SusanaFrazão, Orlando2023-04-042023-04-042022Perez-Herrera, R. A., Soares, L., Silva, S., & Frazão, O. (2022). Ring Cavity Erbium-Doped Fiber for Refractive Index Measurements. Sensors, 22(23), 9315. https://doi.org/10.3390/s222393151424-822010.3390/s22239315https://academica-e.unavarra.es/handle/2454/45053In this study, an interrogation system based on an erbium-doped fiber ring cavity for refractive index measurements is presented and experimentally demonstrated. This cavity ring includes a 1 × 3 coupler wherein one of the fiber output ports is used to increase the optical power of the system by means of an FBG used as a reflector. The other two output ports are used as a refractive index sensing head and reference port, respectively. An experimental demonstration of this proposed sensor system for the measurement of a distinct refractive index is presented.application/pdfeng© 2022 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.Amplified spontaneous emissionErbium-doped fiberRefractive index measurementsArtículo / Artikulua2023-04-04Acceso abierto / Sarbide irekiainfo:eu-repo/semantics/openAccess