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Proceedings Paper

Eliminating the influence of polarization instability using time-wavelet energy spectrum for FBG-FP static-strain sensing
Author(s): Wenzhu Huang; Wentao Zhang; Tengkun Zhen; Fusheng Zhang; Fang Li
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Paper 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.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91570K (2 June 2014); doi: 10.1117/12.2058297
Show Author Affiliations
Wenzhu Huang, Institute of Semiconductors (China)
Wentao Zhang, Institute of Semiconductors (China)
Tengkun Zhen, Shijiazhuang Tiedao Univ. (China)
Fusheng Zhang, Shijiazhuang Tiedao Univ. (China)
Fang Li, Institute of Semiconductors (China)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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