Ultra-high temperature fiber optical chemical sensors based on nano-porous metal oxides

Aidong Yan; Mohamed Zaghloul; Zsolt L Poole; Paul Ohodnicki; Michael Buric; Kevin P. Chen

doi:10.1117/12.2178147

22 May 2015 Ultra-high temperature fiber optical chemical sensors based on nano-porous metal oxides

Aidong Yan; Mohamed Zaghloul; Zsolt L Poole; Paul Ohodnicki; Michael Buric; Kevin P. Chen

Author Affiliations +

Proceedings Volume 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII; 94671I (2015) https://doi.org/10.1117/12.2178147
Event: SPIE Defense + Security, 2015, Baltimore, Maryland, United States

Abstract

This paper presents fiber optical gas sensors based on nano-porous metal oxide functional materials for high-temperature energy applications. A solution-based approach was used to produce nano-porous functional metal oxide and their dopant variants as sensing films, which was integrated on high-temperature stable FBGs in D-shaped silica fibers and sapphire fibers. The Bragg grating peaks were used to monitor the refractive index change and optical absorption loss due to the redox reaction between Pd-doped TiO₂ and hydrogen from the room temperature to 800°C. The experimental results show the sensor's response is reversible for hydrogen concentration between 0.1 vol.% to 5 vol. %. The response time of the hydrogen sensor is <8s.

Citation Download Citation

Aidong Yan, Mohamed Zaghloul, Zsolt L Poole, Paul Ohodnicki, Michael Buric, Kevin P. Chen, "Ultra-high temperature fiber optical chemical sensors based on nano-porous metal oxides", Proc. SPIE 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII, 94671I (22 May 2015); doi: 10.1117/12.2178147; https://doi.org/10.1117/12.2178147

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