2 June 2014 Long-term stable sapphire fiber Bragg grating sensors at 1400°C
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915719 (2014) https://doi.org/10.1117/12.2059313
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
We tested the long term stability of first order Sapphire Fiber Bragg gratings (SFBG) at 1400°C for a period of 28 days in air. During the whole period temperatures detected by the SFBG differed less than ±2K°C from the temperatures measured by a type B thermocouple. The spectra at the beginning and the end of the installation were identical. The reliable practical application of wavelength-multiplexed two-grating SFBG arrays for quasi-distributed sensing at very high temperatures has been demonstrated.
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T. Habisreuther, T. Habisreuther, T. Elsman, T. Elsman, Z. Pan, Z. Pan, A. Graf, A. Graf, P. Ahonen, P. Ahonen, K. Grujic, K. Grujic, S. Simonsen, S. Simonsen, H. Mathisen, H. Mathisen, R. Norheim, R. Norheim, R. Willsch, R. Willsch, M. Schmidt, M. Schmidt, } "Long-term stable sapphire fiber Bragg grating sensors at 1400°C", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915719 (2 June 2014); doi: 10.1117/12.2059313; https://doi.org/10.1117/12.2059313
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