Temperature sensitivity enhancement in a standard optical fiber with double coatings at low temperature

Xin Lu; Marcelo A. Soto; Luc Thévenaz

doi:10.1117/12.2264633

23 April 2017 Temperature sensitivity enhancement in a standard optical fiber with double coatings at low temperature

Xin Lu, Marcelo A. Soto, Luc Thévenaz

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032371 (2017) https://doi.org/10.1117/12.2264633
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

The thermomechanical behavior of a standard optical fiber with double coating is theoretically analyzed at room temperature and ∼ 220 K. As the primary coating becomes stiffer at low temperature, the impact of the thermal expansion of the coatings is no longer negligible and contributes to the thermal response of the fiber sensor. The temperature sensitivity enhancement is validated by distributed fiber sensors based on Brillouin scattering and coherent Rayleigh scattering at 220 K; the experimental results agree well with the theoretical analysis.

Citation Download Citation

Xin Lu, Marcelo A. Soto, and Luc Thévenaz "Temperature sensitivity enhancement in a standard optical fiber with double coatings at low temperature", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032371 (23 April 2017); https://doi.org/10.1117/12.2264633

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