18 May 2017 High spatial resolution fiber optical sensors for simultaneous temperature and chemical sensing for energy industries
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Abstract
This paper demonstrates optical fibers as high-temperature sensor platforms. Through engineering and onfiber integration of functional metal oxide sensory materials, we report the development of an integrated sensor solution to perform temperature and chemical measurements for high-temperature energy applications. Using the Rayleigh optical frequency domain reflectometry (OFDR) distributed sensing scheme, the temperature and hydrogen concentration were measured along the fiber. To overcome the weak Rayleighbackscattering intensity exhibited by conventional optical fibers, an ultrafast laser was used to enhance the Rayleigh scattering by a direct laser writing method. Using the Rayleigh-enhanced fiber as sensor platform, both temperature and hydrogen reaction were monitored at high temperature up to 750°C with 4-mm spatial resolution.
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Aidong Yan, Aidong Yan, Sheng Huang, Sheng Huang, Shuo Li, Shuo Li, Mohamed Zaghloul, Mohamed Zaghloul, Paul Ohodnicki, Paul Ohodnicki, Michael Buric, Michael Buric, Kevin P. Chen, Kevin P. Chen, } "High spatial resolution fiber optical sensors for simultaneous temperature and chemical sensing for energy industries", Proc. SPIE 10194, Micro- and Nanotechnology Sensors, Systems, and Applications IX, 101941R (18 May 2017); doi: 10.1117/12.2263624; https://doi.org/10.1117/12.2263624
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