Fibre loop mirror using a small core microstructured fibre for the simultaneous measurement of strain and temperature

R. M. André; M. B. Marques; P. Roy; O. Frazão

doi:10.1117/12.844408

8 September 2010 Fibre loop mirror using a small core microstructured fibre for the simultaneous measurement of strain and temperature

R. M. André, M. B. Marques, P. Roy, O. Frazão

Author Affiliations +

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76530M (2010) https://doi.org/10.1117/12.844408
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

In this work, a fibre loop mirror for the simultaneous measurement of strain and temperature is presented. The loop mirror contains a section of a small core microstructured fibre characterized for strain and temperature sensing. Due to the small core geometry and using a small section length, the structure presents high birefringence and also intermodal interference. The spectral response of this configuration shows the presence of three interferometers. One of them corresponds to the interference of light that propagates in the fast and slow axes (group birefringence) and the others are associated with the interference of light in the two lowest order spatial modes in each of the fibre eigenaxis. These interferometers present distinct sensitivities to strain and temperature for different wavelengths.

Citation Download Citation

R. M. André, M. B. Marques, P. Roy, and O. Frazão "Fibre loop mirror using a small core microstructured fibre for the simultaneous measurement of strain and temperature", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76530M (8 September 2010); https://doi.org/10.1117/12.844408

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