Investigation of the Properties of an All-Fiber Temperature Sensor Created Using the Melting Effect

Abstract

The temperature sensitivity of an all-fiber temperature sensor created using the melting effect is investigated. In order to study the dependence, a special model was developed and assembled to check the sensitivity of the sensors to temperature changes. During the experiments, the temperature dependences of the spectral shift for the sensor were obtained in the 30–90°С and 20–320°С temperature ranges. During the study, a graph of the dependence of the spectrum on temperature was obtained and a calibration graph was constructed. Thus, the temperature sensitivity of the sensor was determined, which was ≈16 mln–1/°C. The results of the fiber strength in an acrylate coating were obtained before and after tests using the axial tension method. It was found that the ultimate strength of the fiber decreased by more than 2 times when exposed to high temperature.