Surface plasmon resonance hydrogen sensor using an optical fibre

Abstract

An optical fibre SPR sensor has been developed for the detection of hydrogen leakages. This sensor uses a selective injection of a monochromatic light and a thin palladium layer as transducer. Detectable concentrations of hydrogen in nitrogen have been found within the range [0,8%, 100%] with response times varying between 300 to 3 seconds at room temperature.