Interferometric Temperature Fiber Sensor Based on Hilbert Transform

Implementation of the Hilbert Transform (HT) for temperature monitoring using an interferometric fiber sensor is presented. The method’s effectiveness is confirmed through modeling, simulation, and experimental results. This approach simplifies the process of monitoring the phase of an interferometric signal from a fiber sensor. Using a Fabry-Perot interferometer as the sensing element, it is demonstrated that the HT method enables accurate temperature measurement. The results show a high sensitivity and precision, with an error margin of less than 0.1°C, demonstrating the method’s reliability and potential for various applications.