Control of the strain sensitivity using a suspended core photonic crystal fiber sensing head

S. Rota-Rodrigo; M. Lopez-Amo; J. Kobelke; K. Schuster; J. L. Santos; O. Frazão

doi:10.1117/12.2055081

2 June 2014 Control of the strain sensitivity using a suspended core photonic crystal fiber sensing head

S. Rota-Rodrigo, M. Lopez-Amo, J. Kobelke, K. Schuster, J. L. Santos, O. Frazão

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91571Y (2014) https://doi.org/10.1117/12.2055081
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

In this work a strain sensor based on a suspended core fiber is proposed. The sensor comprises a suspended core PCF between SMFs and is based on the multimode interference generated in these transitions. A strain sensitivity study for different sensing heads and stage separation lengths was carried out showing a sensitivity of -2.42 pm/με for the best case. Also the sensing head was tested for curvature and temperature, showing in the first case that it is insensitive to curvature effects, and secondly, that for small sensor lengths it was insensitive to temperature variations.

Citation Download Citation

S. Rota-Rodrigo, M. Lopez-Amo, J. Kobelke, K. Schuster, J. L. Santos, and O. Frazão "Control of the strain sensitivity using a suspended core photonic crystal fiber sensing head ", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91571Y (2 June 2014); https://doi.org/10.1117/12.2055081

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