High-resolution transversal load sensor using a random distributed feedback fiber laser

V. DeMiguel-Soto; D. Leandro; M. Lopez-Amo

doi:10.1117/12.2236195

30 May 2016 High-resolution transversal load sensor using a random distributed feedback fiber laser

V. DeMiguel-Soto, D. Leandro, M. Lopez-Amo

Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 991606 (2016) https://doi.org/10.1117/12.2236195
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland

Abstract

In this work, a new application of random distributed feedback lasers to fiber optic sensing has been presented. The particular properties of these lasers, such as the lack of longitudinal modes and high stability, have been exploited to monitor transversal load using a phase-shifted fiber Bragg grating (PS-FBG), obtaining a resolution of 1g and a sensitivity of 3.95GHz/Kg. Due to the PS-FBG birefringence and the load-interrelated transmission lines generated by the PS-FBG along the orthogonal polarization directions, the beating of the two emission lines generated in the laser can be monitored in the electrical domain. As a result, transversal load applied on the sensor can be measured.

Citation Download Citation

V. DeMiguel-Soto, D. Leandro, and M. Lopez-Amo "High-resolution transversal load sensor using a random distributed feedback fiber laser", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 991606 (30 May 2016); https://doi.org/10.1117/12.2236195

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