Hydrogen sensing array based on weak fiber Bragg grating

Wei Bai; Minghong Yang; Chenyuan Hu; Jixiang Dai; Zhi Li; Haihu Yu

doi:10.1117/12.2193869

28 September 2015 Hydrogen sensing array based on weak fiber Bragg grating

Wei Bai, Minghong Yang, Chenyuan Hu, Jixiang Dai, Zhi Li, Haihu Yu

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96347E (2015) https://doi.org/10.1117/12.2193869
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

Optical fiber hydrogen sensing system based on weak fiber Bragg grating (WFBG) array deposited with palladium (Pd) film is proposed and experimentally demonstrated. For multi-point measurement, three hydrogen WFBG sensors array are weld in a single optical fiber. A time-division multiplexing (TDM) interrogation system is employed to demodulate the sensing array. Sensing experiments to different hydrogen concentrations ranging from 0 to 3.6% are conducted, and the results show good agreement with standard FBG technology. Due to its strong multiplexing capability of weak FBG, the system is possible to integrate thousands of WFBG hydrogen sensors in a single optical fiber.

Citation Download Citation

Wei Bai, Minghong Yang, Chenyuan Hu, Jixiang Dai, Zhi Li, and Haihu Yu "Hydrogen sensing array based on weak fiber Bragg grating", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96347E (28 September 2015); https://doi.org/10.1117/12.2193869

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