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Proceedings Paper

Design of hydrogen gas sensors based on surface plasmon waveguides
Author(s): Norman R. Fong; Pierre Berini; R. Niall Tait
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Paper Abstract

The use of hydrogen (H2) as a clean energy source is gaining significant global interest. Hydrogen gas can be combustible in air at concentrations starting at 4%, so a low cost, compact and reliable leak detector for hydrogen gas integratable into systems is desired. A Long Range Surface Plasmon Polariton (LRSPP) membrane waveguide structure is discussed as a hydrogen sensor. Palladium on a silicon dioxide free-standing membrane is proposed as the waveguide structure. Palladium absorbs hydrogen thereby inducing a detectable change in its permittivity. The design of straight waveguide and Mach-Zehnder Interferometer (MZI) architectures are discussed. Finite element method (FEM) simulations are conducted to choose appropriate designs to maximize sensor sensitivity.

Paper Details

Date Published: 8 September 2011
PDF: 7 pages
Proc. SPIE 8007, Photonics North 2011, 80071G (8 September 2011); doi: 10.1117/12.902917
Show Author Affiliations
Norman R. Fong, Carleton Univ. (Canada)
Pierre Berini, Univ. of Ottawa (Canada)
R. Niall Tait, Carleton Univ. (Canada)

Published in SPIE Proceedings Vol. 8007:
Photonics North 2011

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