Temperature detection using concentric fiber bundles and tin metal as sensor

Abstract

Temperature detection has been demonstrated using concentric fiber bundles and tin metal as a sensor probe. The detection mechanism utilizes the expansion of tin metal due to temperature changes to shift the reflector. The reflected light from the reflector entering the probe bundle changes its intensity when the reflector shifts. Thus the change in temperature is observed from the change in the intensity of the light entering the fiber bundle which is read from the optical detector output voltage. The sensor is able to detect temperatures ranging from 90°C-120°C with a resolution of 0.012°C.