Fabry-Perot cavity sensing structure based on a suspended-core fibre

O. Frazão; J. M. Baptista; J. L. Santos; J. Kobelke; K. Schuster

doi:10.1117/12.834636

5 October 2009 Fabry-Perot cavity sensing structure based on a suspended-core fibre

O. Frazão, J. M. Baptista, J. L. Santos, J. Kobelke, K. Schuster

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75032A (2009) https://doi.org/10.1117/12.834636
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

A fibre optic Fabry-Perot sensing structure based on suspended-core fibre is presented. The interferometric structure is formed when a small length of suspended-core fibre with three or four holes is spliced to the end of a standard single mode fibre. The sensing structure is implemented firstly for strain and temperature measurement, and secondly for refractive index measurement. The interrogation of the sensing structure is obtained for the first implementation by the wavelength variation, and for the second implementation through the fringe visibility and through the analysis of the fast Fourier transform.

Citation Download Citation

O. Frazão, J. M. Baptista, J. L. Santos, J. Kobelke, and K. Schuster "Fabry-Perot cavity sensing structure based on a suspended-core fibre", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75032A (5 October 2009); https://doi.org/10.1117/12.834636

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