Design of hydrogen gas sensors based on surface plasmon waveguides

Norman R. Fong; Pierre Berini; R. Niall Tait

doi:10.1117/12.902917

8 September 2011 Design of hydrogen gas sensors based on surface plasmon waveguides

Norman R. Fong, Pierre Berini, R. Niall Tait

Proceedings Volume 8007, Photonics North 2011; 80071G (2011) https://doi.org/10.1117/12.902917
Event: Photonics North 2011, 2011, Ottawa, Canada

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.

Citation Download Citation

Norman R. Fong, Pierre Berini, and R. Niall Tait "Design of hydrogen gas sensors based on surface plasmon waveguides", Proc. SPIE 8007, Photonics North 2011, 80071G (8 September 2011); https://doi.org/10.1117/12.902917

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