Cognitive fiber Bragg grating sensors system based on fiber Fabry-Perot tunable filter technology

Hongtao Zhang; Pengfei Wang; Jilin Zou; Jing Xie; Hong-Liang Cui

doi:10.1117/12.886075

18 May 2011 Cognitive fiber Bragg grating sensors system based on fiber Fabry-Perot tunable filter technology

Hongtao Zhang, Pengfei Wang, Jilin Zou, Jing Xie, Hong-Liang Cui

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 775388 (2011) https://doi.org/10.1117/12.886075
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

The wavelength demodulation based on a Fiber Fabry-Pérot Tunable Filter (FFP-TF) is a common method for multiplexing Fiber Bragg Grating (FBG) sensors. But this method cannot be used to detect high frequency signals due to the limitation by the highest scanning rate that the FFP-TF can achieve. To overcome this disadvantage, in this paper we present a scheme of cognitive sensors network based on FFP-TF technology. By perceiving the sensing environment, system can automatically switch into monitoring signals in two modes to obtain better measurement results: multi measurement points, low frequency (<1 KHz) signal, and few measurement points but high frequency (~50 KHz) signals. This cognitive sensors network can be realized in current technology and satisfy current most industrial requirements.

Citation Download Citation

Hongtao Zhang, Pengfei Wang, Jilin Zou, Jing Xie, and Hong-Liang Cui "Cognitive fiber Bragg grating sensors system based on fiber Fabry-Perot tunable filter technology", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775388 (18 May 2011); https://doi.org/10.1117/12.886075

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