Fernández Vallejo, MontserratPérez Herrera, Rosa AnaElosúa Aguado, CésarDíaz Lucas, SilviaUrquhart, PaulBariáin Aisa, CándidoLópez-Amo Sáinz, Manuel2019-12-232019-12-232009M. Fernandez Vallejo et al., 'Resilient Amplified Double-Ring Optical Networks to Multiplex Optical Fiber Sensors,' in Journal of Lightwave Technology, vol. 27, no. 10, pp. 1301-1306, May15, 2009.0733-872410.1109/JLT.2009.2015774https://academica-e.unavarra.es/handle/2454/35961We report the experimental demonstration of two configurations of an amplified optical fibre double ring network for the multiplexing of sensors. The networks are designed to be inherently resilient to fibre failures because they enable simultaneous interrogation of all the optical fibre sensors using both rings. The first design demonstrates the feasibility of the so called 'dedicated protection' and the second one 'shared protection' for fibre optic intensity sensors. Raman amplification is used to overcome the losses of the couplers used in the rings, providing power transparency. The first network uses Raman amplification in both constituent rings but in the second one Raman pumping is activated only when a fibre failure occurs. We demonstrate how the topology allows the received powers from the sensors to be equalized.9 p.application/pdfeng© 2009 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 workFibre Bragg grating (FBG)Fibre optics sensorsRaman lasersMultiplexinginfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessAcceso abierto / Sarbide irekia