Sensing characteristics of hollow-core photonic crystal fibre modal interferometers

S. H. Aref; R. Amezcua-Correa; J. P. Carvalho; O. Frazão; P. Caldas; J. L. Santos; F. M. Araújo; H. Latifi; F. Farahi; L. A. Ferreira; J. C. Knight

doi:10.1117/12.834485

5 October 2009 Sensing characteristics of hollow-core photonic crystal fibre modal interferometers

S. H. Aref, R. Amezcua-Correa, J. P. Carvalho, O. Frazão, P. Caldas, J. L. Santos, F. M. Araújo, H. Latifi, F. Farahi, L. A. Ferreira, J. C. Knight

Author Affiliations +

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 750339 (2009) https://doi.org/10.1117/12.834485
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

In this work, sensitivity to strain, temperature and curvature of a sensor relying on modal interferometry in hollow-core photonic crystal fibre is studied. The sensing structure is simply a piece of hollow-core fibre connected in both ends to standard single mode fibre. An interference pattern that is associated to the interference of the light that propagates in the hollow core fundamental mode with light that propagates in other modes is observed. The phase of this interference pattern changes with the measurand interaction, which is the basis for considering this structure for sensing. The phase recovery is performed using a white light interferometric technique.

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S. H. Aref, R. Amezcua-Correa, J. P. Carvalho, O. Frazão, P. Caldas, J. L. Santos, F. M. Araújo, H. Latifi, F. Farahi, L. A. Ferreira, and J. C. Knight "Sensing characteristics of hollow-core photonic crystal fibre modal interferometers", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750339 (5 October 2009); https://doi.org/10.1117/12.834485

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