Fiber specklegram sensors sensitivities at high temperatures

L. Rodriguez-Cobo; M. Lomer; J. M. Lopez-Higuera

doi:10.1117/12.2194288

28 September 2015 Fiber specklegram sensors sensitivities at high temperatures

L. Rodriguez-Cobo, M. Lomer, J. M. Lopez-Higuera

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96347J (2015) https://doi.org/10.1117/12.2194288
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

In this work, the sensitivity of Fiber Specklegram Sensors to high temperatures (up to 800ºC) have been studied. Two multimode silica fibers have been introduced into a tubular furnace while a HeNe laser source was launched into a fiber edge, projecting speckle patterns to a commercial webcam. A computer generated different heating and cooling sweeps while the specklegram evolution was recorded. The achieved results exhibit a remarkably linearity in FSS’s sensitivity for temperatures under 800ºC, following the thermal expansion of fused silica.

Citation Download Citation

L. Rodriguez-Cobo, M. Lomer, and J. M. Lopez-Higuera "Fiber specklegram sensors sensitivities at high temperatures", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96347J (28 September 2015); https://doi.org/10.1117/12.2194288

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