28 September 2015 Fiber laser sensor system based on a random mirror and a compound ring resonator for displacement measurements
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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.
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S. Rota-Rodrigo, S. Rota-Rodrigo, M. González-Herráez, M. González-Herráez, M. Lopez-Amo, 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); doi: 10.1117/12.2191970; https://doi.org/10.1117/12.2191970
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