%0 Journal Article %A Filograno, M. L. %A Corredera, Pedro %A Monteagudo Lerma, Laura %A Esteban Martinez, Óscar %A González Herráez, Miguel %T Low-cost, self-referenced all-fibre polarimetric current sensor for the monitoring of current in the railway catenary %D 2010 %@ 0277-786X %U http://hdl.handle.net/10017/26487 %X In this paper a low-cost all-fiber current sensor is described that fulfills the requirements of robustness, sensitivity, accuracy and cost required for the monitoring of catenary current in changeover sections of the high-speed railway network. Its optical configuration is simplified through the use of few devices with extremely simplified alignment. This allows high sensitivity for low current values and a resolution below the ampere level. The sensing head is packed in a compact box withstanding temperature and position variations without affecting the sensitivity of the set-up. The electronics incorporates self-referencing that makes it robust to small misalignments and power variations in the optical source. Field tests will be reported in the conference %K Optical fibre %K Current sensor %K Polarimetric sensor %K Faraday effect %K Ciencias tecnológicas %K Electrónica %K Technology %K Electronics %~ Biblioteca Universidad de Alcala