Optical sensor for temperature measurement using bimetallic concept

In this paper, we report an optical fiber sensor for measuring temperature based on bimetallic concept. The sensor is designed by following the basic principle of Fabry–Perot interferometer and theoretical detail of the sensor has been outlined here with a numerical study. An important feature of the proposed sensor is that the fabrication will be done on a commercial multimode optical fiber. The Micro-Electro-Mechanical Systems (MEMS) based fabrication process could be performed directly on a multimode optical fiber end face which will eliminate the need for adhesive in packaging. The sensor could be fabricated as sensor arrays for micro level applications. The potential application of the proposed optical sensor includes biomedical applications, nano research, microfluidics, and other MEMS devices.

► Optical temperature sensor has been presented based on Fabry-Perot interferometry. ► The sensor will be fabricated using a commercial multimode optical fiber. ► MEMS based fabrication process will eliminate the need for adhesive in packaging. ► The sensor could be fabricated as sensor arrays for micro level applications. ► Application of the sensor includes biomedical, micro/nano research, & MEMS devices.