Low-cost self-referenced all-fibre polarimetric current sensor for the monitoring of current in the railway catenary

Massimo L. Filograno; Pedro Corredera; Laura Monteagudo Lerma; Óscar Esteban; Miguel González-Herráez

doi:10.1117/12.866433

9 September 2010 Low-cost self-referenced all-fibre polarimetric current sensor for the monitoring of current in the railway catenary

Massimo L. Filograno, Pedro Corredera, Laura Monteagudo Lerma, Óscar Esteban, Miguel González-Herráez

Author Affiliations +

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76533L (2010) https://doi.org/10.1117/12.866433
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

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.

Citation Download Citation

Massimo L. Filograno, Pedro Corredera, Laura Monteagudo Lerma, Óscar Esteban, and Miguel González-Herráez "Low-cost self-referenced all-fibre polarimetric current sensor for the monitoring of current in the railway catenary", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76533L (9 September 2010); https://doi.org/10.1117/12.866433

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