Design of a metal hydride-coated tilted fibre Bragg grating-based hydrogen sensor
Kasun P.W. Dissanayake (TU Delft - Group Groves)
H.S. Dewi (TU Delft - Group Groves)
H Schreuders (TU Delft - ChemE/O&O groep)
Lars Bannenberg (TU Delft - RID/TS/Instrumenten groep)
Roger M. Groves (TU Delft - Group Groves)
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Abstract
Hydrogen, crucial in industrial and environmental realms, demands precise sensing methods. This study focuses on the design of a metal hydride-coated tilted fibre Bragg grating (TFBG) based sensor for hydrogen detection, introducing tantalum as a novel sensing material for fibre optic hydrogen sensor development. To facilitate the ellipsometry inspection of optical constants, magnetron sputtering technique has been employed to deposit nanometer-scale metal films onto a glass substrate. Numerical modeling results are presented for mode analysis of the proposed sensor design, analyzing transverse mode behavior for sensor optimization. The study also provides insights into other TFBG sensor design considerations, suggesting potential hydrogen sensing applications, such as hydrogen-powered aviation and storage solutions.