Experimental and Numerical Characterization of a Hybrid Fabry-Pérot Cavity for Temperature Sensing

Aitor Lopez-Aldaba (1) , Ana Margarida Rodrigues Pinto (1) , Manuel Lopez-Amo (1) , Orlando Frazão (2) , José Luis Santos (2) , J.M. Baptista (2) , Hardy Baierl (3) , Jean-Louis Auguste (3) , Raphaël Jamier (3) , Philippe Roy (3)

1 Department of Electric and Electronic Engineering of the Public University of Navarra
2 INESC-ID - Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa
3 XLIM-PHOT - Photonique Fibre et Sources Cohérentes

A hybrid Fabry-Pé rot cavity sensing head based on a four-bridge microstructured fiber is characterized for temperature sensing. The characterization of this cavity is performed numerically and experimentally in the L-band. The sensing head output signal presents a linear variation with temperature changes, showing a sensitivity of 12.5 pm/° C. Moreover, this Fabry-Pé rot cavity exhibits good sensitivity to polarization changes and high stability over time.

Mots clés: birefringence; fiber sensor; microstructured fiber; photonic crystal fiber; temperature sensor

Domaines: Optique [physics.optics]

Aitor Lopez-Aldaba, Ana Margarida Rodrigues Pinto, Manuel Lopez-Amo, Orlando Frazão, José Luis Santos, et al.. Experimental and Numerical Characterization of a Hybrid Fabry-Pérot Cavity for Temperature Sensing. Sensors, 2015, 15 (4), pp.8042. ⟨10.3390/s150408042⟩. ⟨hal-01257121⟩