Abstract
The study focuses on the thermal and temperature sensitivity behavior of an optical fiber sensor device. In this article, a titanium nitride (TiN)-coated fiber Bragg grating (FBG) sensor fabricated using an ion beam sputtering system was investigated. The reflection spectra of the FBG sensor were tested using R-soft optical software to simulate the refractive index sensitivity. In these experiments, the temperature sensitivity of the TiN FBG was measured at temperatures ranging from 100 to 500 °C using an optical spectrum analyzer (OSA). The results showed that the temperature sensitivity of the proposed TiN FBG sensor reached 12.8 pm/°C for the temperature range of 100 to 300 °C and 20.8 pm/°C for the temperature range of 300 to 500 °C. Additionally, we found that the produced oxidation at temperatures of 400–500 °C caused a crack, with the crack becoming more and more obvious at higher and higher temperatures.
Highlights
The safety-related resistance temperature detectors (RTDs) used in nuclear power plants (NPP)require fast dynamic performance [1]
In a study conducted by Rajini-Kumar et al [8], different types of metal-coated fiber Bragg grating (FBG) were tested for their temperature characteristics, and a CrN-coated FBG sensor exhibited a 14.0 pm/◦ C greater temperature sensitivity than a bare FBG [9]
The high temperature sensor was fabricated by using a DC magnetron to sputter physical The high temperature sensor was fabricated by using a DC magnetron to sputter physical vapor vapor deposition (PVD) titanium nitride (TiN) onto the surface cladding of the FBG sensor
Summary
The safety-related resistance temperature detectors (RTDs) used in nuclear power plants (NPP). In a study conducted by Rajini-Kumar et al [8], different types of metal-coated FBGs were tested for their temperature characteristics, and a CrN-coated FBG sensor exhibited a 14.0 pm/◦ C greater temperature sensitivity than a bare FBG [9]. FBG, and to study the role of such metal coating in promoting the temperature sensitivity coated FBG, and to study the role of such metal coating in promoting the temperature sensitivity and and the crack characteristics of TiN-coated film of in FBG in high-temperature environments. TiN-coated were analyzed applied to monitoring the temperature in the environment the TiN-coated FBG were analyzed applied to monitoring the temperature in the environment sensor. TiNthe sensor was investigated with regard regard to its temperature sensitivity and crack characteristics. The measurement results, as strain to its temperature sensitivity and crack characteristics.
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