Fiber laser sensor system based on a random mirror and a compound ring resonator for displacement measurements

S. Rota-Rodrigo; M. González-Herráez; M. Lopez-Amo

doi:10.1117/12.2191970

28 September 2015 Fiber laser sensor system based on a random mirror and a compound ring resonator for displacement measurements

S. Rota-Rodrigo, M. González-Herráez, M. Lopez-Amo

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96344A (2015) https://doi.org/10.1117/12.2191970
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

In this work, we present a random laser sensor system for increasing simultaneously the sensitivity and interrogation stability of a fiber-optic displacement sensor. The system is based on a random distributed fiber laser modulated by a double-coupler ring resonator within which is placed the sensor. This allows to increase the sensitivity of the sensor and also its interrogation stability. The experimental results show a dynamic range increment (and consequently its sensitivity) of 10dB. Moreover, by using this laser-based interrogation system, the instability is reduced to 0.04 dB. In addition, wavelength filtering elements are not required, simplifying the system.

Citation Download Citation

S. Rota-Rodrigo, M. González-Herráez, and M. Lopez-Amo "Fiber laser sensor system based on a random mirror and a compound ring resonator for displacement measurements", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96344A (28 September 2015); https://doi.org/10.1117/12.2191970

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