Highly-Birefringent Photonic Bandgap Bragg Fiber Loop Mirror for Sensing Applications

M.S. Ferreira , J.M. Baptista (1) , Philippe Roy (2) , Raphaël Jamier (2) , Sébastien Février (2) , O. Frazão (1)

1 INESC-ID - Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa
2 PHOTONIQUE

A highly-birefringent photonic bandgap Bragg fiber loop mirror sensor is proposed. Thanks to the Bragg fiber geometry, one can observe the group birefringence and the bandgap fiber in the transfer function. The sensing head presented different sensitivities for strain and temperature measurements. Using the matrix method, both the physical parameters can be discriminated. It is important to highlight that this Bragg fiber presents sensitivity to temperature of ~5.75 nm/ºC, for the group birefringence measurand.

M.S. Ferreira, J.M. Baptista, Philippe Roy, Raphaël Jamier, Sébastien Février, et al.. Highly-Birefringent Photonic Bandgap Bragg Fiber Loop Mirror for Sensing Applications. 21st International Conference on Optical Fiber Sensors, May 2011, Ottawa - Canada, United States. pp.77537L-77537L-4, ⟨10.1117/12.884953⟩. ⟨hal-00698533⟩