Nanocrystalline Cu-doped zirconia film-coated long-period fiber grating for CO monitoring at high temperature

Xiling Tang; Jian Zhang; Junhang Dong; Tao Wei; Hai Xiao

doi:10.1117/12.819016

29 April 2009 Nanocrystalline Cu-doped zirconia film-coated long-period fiber grating for CO monitoring at high temperature

Xiling Tang, Jian Zhang, Junhang Dong, Tao Wei, Hai Xiao

Author Affiliations +

Proceedings Volume 7322, Photonic Microdevices/Microstructures for Sensing; 73220C (2009) https://doi.org/10.1117/12.819016
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

Dense nanocrystalline copper-doped zirconia (CDZ, Cu:Zr=16:84) thin film was coated on the surface of a 125 μm-diameter long-period fiber grating (LPFG) by a facile synthesis route involving polymeric precursor coating and subsequent thermal treatments. The CDZ film had a uniform thickness of ~100 nm and grain size of 20 to 35 nm after a brief annealing step at 700°C for 1 hour. This CDZ thin film coated LPFG (CDZ-LPFG) was evaluated at a high temperature of 550°C for its change of resonant wavelength (λ_R) in response to the variation of carbon monoxide (CO) concentration in nitrogen (N₂). The λ_R was found to shift toward longer wavelength when increasing the CO concentration. The CDZ-LPFG sensor response was found to be reproducible and reversible at low level CO concentrations (<1,000 ppm) but became irreversible when the CO concentration was high (e.g. at 10,000 ppm). The high temperature stability of the CDZ material in CO-containing atmospheres was studied to understand the limit of CO measurement range.

Citation Download Citation

Xiling Tang, Jian Zhang, Junhang Dong, Tao Wei, and Hai Xiao "Nanocrystalline Cu-doped zirconia film-coated long-period fiber grating for CO monitoring at high temperature", Proc. SPIE 7322, Photonic Microdevices/Microstructures for Sensing, 73220C (29 April 2009); https://doi.org/10.1117/12.819016

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