22 May 2015 Ultra-high temperature fiber optical chemical sensors based on nano-porous metal oxides
Author Affiliations +
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.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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
PROCEEDINGS
8 PAGES


SHARE
Back to Top