High-sensitivity PCF sensing head for strain measurement

S. Rota-Rodrigo; M. Bravo; A. M. R. Pinto; M. López-Amo

doi:10.1117/12.974948

17 October 2012 High-sensitivity PCF sensing head for strain measurement

S. Rota-Rodrigo, M. Bravo, A. M. R. Pinto, M. López-Amo

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 842136 (2012) https://doi.org/10.1117/12.974948
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

An original photonic crystal fiber based sensing head is proposed for strain measurement. The sensor comprises a Hi-Bi PCF sensing head to measure in reflection using polarimetry. A background study of the sensing head polarization state signals is conducted utilizing an optical backscatter reflectometer. Using a more accessible set up, one of the Hi-Bi PCF polarization signals is isolated allowing to accurately measure strain variations. In-reflection polarimetric strain sensing is obtained with a sensitivity of ~7.6 dB/1000μm and with the breakage point at 5500 με.

Citation Download Citation

S. Rota-Rodrigo, M. Bravo, A. M. R. Pinto, and M. López-Amo "High-sensitivity PCF sensing head for strain measurement", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842136 (17 October 2012); https://doi.org/10.1117/12.974948

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