Articles | Volume 11, issue 1
J. Sens. Sens. Syst., 11, 15–20, 2022
https://doi.org/10.5194/jsss-11-15-2022

Special issue: Sensors and Measurement Science International SMSI 2021

J. Sens. Sens. Syst., 11, 15–20, 2022
https://doi.org/10.5194/jsss-11-15-2022
Regular research article
14 Jan 2022
Regular research article | 14 Jan 2022

Numerical analysis of an infrared gas sensor utilizing an indium-tin-oxide-based plasmonic slot waveguide

Parviz Saeidi et al.

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Short summary
We investigated the feasibility of indium tin oxide (ITO) as an alternative plasmonic material to replace noble metals for sensing applications in the mid-infrared region. An ITO-based plasmonic slot waveguide was numerically designed and analysed for a wavelength of 4.26 µm, which is the absorption band of CO2. As the proposed structure shows low propagation lengths, we concluded that ITO appears not to be an appropriate candidate for plasmonic waveguiding systems.