doi:10.1016/j.optmat.2018.06.002engVallés, J.A.Benedicto, D.Optimized active multicore fiber bending sensorART-2018-107228We present a study of the feasibility of transforming the multicore fiber in a supermode-interference based bending sensor into an active stage. By compensating the antisymmetric supermode losses for high curvatures, fringe visibility is improved and the sensor operating range can be extended. For a given multicore fibre length and Er3+-ion concentration sensor calibration curves allow assessing the bending radius by measuring the visibility as a function of the input pump power. The Er3+-ion concentration, available input pump power and multicore fiber length set the minimum bending radius that could be measured.2018http://zaguan.unizar.es/record/7955010.1016/j.optmat.2018.06.002http://zaguan.unizar.es/record/79550oai:zaguan.unizar.es:79550info:eu-repo/grantAgreement/ES/DGA/FSEinfo:eu-repo/grantAgreement/ES/MINECO/TEC2014-52642-C2-2OPTICAL MATERIALS 87 (2018), 53-57All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess