A C2H5OH gas sensor based on long-period fiber grating coated with TiO2 nano-film

Anna Zhang; Shijun Peng; Jianzhong Zhang; Yujin Chen; Weimin Sun; Libo Yuan

doi:10.1117/12.868549

9 November 2010 A C₂H₅OH gas sensor based on long-period fiber grating coated with T_iO₂ nano-film

Anna Zhang, Shijun Peng, Jianzhong Zhang, Yujin Chen, Weimin Sun, Libo Yuan

Author Affiliations +

Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 78531L (2010) https://doi.org/10.1117/12.868549
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

A C₂H₅OH gas sensor based on a LPFG coated with the T_iO₂ nano-film is presented.Based on LPmodes,the four-layer model is studied the change of the effective refractive indics and the resonance wavelength of cladding modes as the thickness of overlay increased.The elementary experimental results show that the wavelength of the LPFG loss peak is shifted by ~1.7nm for the case of the T_iO₂ nano-film of ~80nm in thickness when the concentration of surrounding C₂H₅OH gas is 1000ppm. And the sensitivity is 1.7 10^-3 nm/ppm. The results indicate that the LPFG sensor is highly sensitive to C₂H₅OH gas and the sensing scheme is feasible.

Citation Download Citation

Anna Zhang, Shijun Peng, Jianzhong Zhang, Yujin Chen, Weimin Sun, and Libo Yuan "A C₂H₅OH gas sensor based on long-period fiber grating coated with T_iO₂ nano-film", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78531L (9 November 2010); https://doi.org/10.1117/12.868549

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