Human body high resolution and accurate temperature FBG sensor

Abstract

A fiber Brag grating-based temperature sensor FBG together with high accuracy, resolution and compact size interrogation system using a short period grating was presented in this work. The designed sensor measures the temperature from 35 C temperature to 41 C which is represented the ranges of human body temperature for use in medical applications. In this paper, we present some results obtained from experiments within a measurement range from (35 C to 40 C) which is from hypothermia to hyperthermia) that the sensor has high sensitivity and high resolution of (85.9%) for FBG sensor. After the results we obtained and the features that the sensor enjoys, such as small size, immunity from electrical influence, and the ability to work in environments Magnetic Resonance Imaging (MRI) environments. The sensor can be used in hospitals and clinics for improvement and monitoring of patients. The importance of this work increases due to the COVID-19 pandemic we are going through, so this work can be proposed to contribute to monitoring patients' cases and considered as a new equipment in studying temperature sensor in human.