Skip to Main content Skip to Navigation
New interface
Journal articles

Fibre gratings for hydrogen sensing

Abstract : Liquid hydrogen has been intensively used in aerospace applications for the past 40 years and is of great interest for future automotive applications. Following major explosive risks due to the use of hydrogen in air, several studies were carried out in order to develop optical fibre sensors for the detection of hydrogen leakage. This paper aims at the presentation of new hydrogen sensors based on the use of fibre Bragg gratings (FBG) and long period gratings (LPG) coated by palladium nanolayers. The sensing principle based on the palladium–hydrogen interaction is presented, as well as experimental results. It is shown that both techniques could be used for hydrogen sensing but with a sensitivity enhanced by a factor up to 500 when using a LPG sensor. FBG sensors appear to be pure strain sensors and LPG sensors are mainly based on the coupling between the cladding modes and evanescent or surface plasmon waves. Preliminary results obtained with an in-fibre Mach–Zehnder interferometer configuration with in-series LPG sensors are also presented. They show potential interest to compensate for the thermal sensitivity of the fibre gratings.
Document type :
Journal articles
Complete list of metadata

Cited literature [15 references]  Display  Hide  Download
Contributor : Emmanuel Marin Connect in order to contact the contributor
Submitted on : Friday, October 6, 2006 - 5:49:29 PM
Last modification on : Saturday, June 25, 2022 - 10:49:39 AM
Long-term archiving on: : Tuesday, April 6, 2010 - 6:53:03 PM




Alain Trouillet, Emmanuel Marin, Colette Veillas. Fibre gratings for hydrogen sensing. Measurement Science and Technology, 2006, 17 (5), pp.1124-1128. ⟨10.1088/0957-0233/17/5/S31⟩. ⟨ujm-00104535⟩



Record views


Files downloads