Investigation of Coating Impact on OFDR Optical Remote Fiber-Based Sensors Performances for Their Integration in High Temperature and Radiation Environments

Rizzolo, Serena
Marin, Emmanuel
Morana, Adriana
Boukenter, Aziz
Ouerdane, Youcef
Cannas, Marco
Perisse, Jocelyn
Bauer, Sophie
Mace, Jean-Reynald
Girard, Sylvain

Open link

Publication date

January 2016

DOI

10.1109/JLT.2016.2552459

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Abstract

International audienceThe response of OFDR-based temperature sensors is here investigated in harsh environments (high temperature, high radiation dose) focusing the attention on the impact of the fiber coating on the sensor performances in such environments. Our results demonstrate that the various coating types evolve differently under thermal treatment and/or radiations, resulting in a small (<5%) change in the temperature coefficient of the sensor. We identified a procedure allowing improving the sensor performances in harsh environments. This procedure consists in a pre-thermal treatment of the radiation tolerant fibers at its maximum coating operating temperature. This allows stabilizing the temperature coefficients when the fiber is e...