2 June 2014 Eliminating the influence of polarization instability using time-wavelet energy spectrum for FBG-FP static-strain sensing
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91570K (2014) https://doi.org/10.1117/12.2058297
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
The fluctuation of polarization may cause wrong demodulation results in high-resolution static-strain sensing based on FBG-FP. This paper presents a polarization-insensitive demodulation algorithm using time-wavelet energy spectrum for single mode fiber (SMF) based FBG-FP sensor. This method can eliminate the influence of polarization instability effectively. Time-wavelet energy spectrum is calculated to get the energy distribution of the reflectance spectrums of FBG-FP on the timeline. The maximum value of the energy distribution is used to obtain the strain signal. In the laboratory, a high-resolution strain demodulation result without polarization controller is obtained.
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Wenzhu Huang, Wenzhu Huang, Wentao Zhang, Wentao Zhang, Tengkun Zhen, Tengkun Zhen, Fusheng Zhang, Fusheng Zhang, Fang Li, Fang Li, } "Eliminating the influence of polarization instability using time-wavelet energy spectrum for FBG-FP static-strain sensing", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91570K (2 June 2014); doi: 10.1117/12.2058297; https://doi.org/10.1117/12.2058297
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