30 May 2016 Reflection-based fiber specklegram sensor
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Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 99161Q (2016) https://doi.org/10.1117/12.2235687
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland
In this paper, a Fiber Specklegram Sensor (FSS) based on Plastic Optical Fiber (POF) has been proposed with a reflection-based configuration. A HeNe laser is launched through a coupler, reflected by a mirrored fiber end and detect the specklegram sequence using a commercial camera. Different sensor performance metrics have been analyzed in terms of final sensitivity to external vibration applied to the fiber. The results confirm the performance reduction of the reflection-based scheme in comparison with the transmission-based approach but it can be also employed as sensing system where only a single fiber end is available.
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L. Rodriguez-Cobo, L. Rodriguez-Cobo, M. Lomer, M. Lomer, R. Ruiz-Lombera, R. Ruiz-Lombera, A. Cobo, A. Cobo, J. M. Lopez-Higuera, J. M. Lopez-Higuera, "Reflection-based fiber specklegram sensor", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99161Q (30 May 2016); doi: 10.1117/12.2235687; https://doi.org/10.1117/12.2235687

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