Fibre Bragg grating-based sensing device for petrol leak detection

摘要

Fibre Bragg gratings (FBGs) have emerged in recent years as important sensor elements for various appli-cations. In this communication application of an FBG sensor using a surgical rubber as transducer element for petrol leak detection in pipelines and tanks is pre-sented. The rubber, which is in tubular form and is bonded with the fibre containing FBG, reversibly swells in the presence of petrol thus resulting in Bragg wave-length shift. The shift is measured using an interrogator with a swept fibrelaser source (1520–570 nm). The design aspects and experimental procedure along with analysis of results obtained and the potential for distrib-uted sensing have been discussed.