Fiber Bragg grating period reconstruction using time-frequency signal analysis and application to distributed sensing

被引:30
作者
Azaña, J [1 ]
Muriel, MA
Chen, LR
Smith, PWE
机构
[1] Univ Politecn Madrid, Grp Senal Foton, ETSI Telecomunicac, E-28040 Madrid, Spain
[2] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
[3] Photon Res Ontario, Toronto, ON M5S 3G4, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
distributed sensing; Fiber Bragg gratings; synthesis techniques; time-frequency signal analysis;
D O I
10.1109/50.923477
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The period and length of a fiber grating structure can be reconstructed from its corresponding complex reflection coefficient using time-frequency signal analysis based on Wigner-Ville and Spectrogram distributions. We provide an experimental demonstration of this synthesis technique on two fiber grating structures and obtain good agreement between the reconstructed values and those expected based on the parameters used in their fabrication, We then propose and numerically demonstrate how this technique can be applied to distributed strain (or temperature) sensing.
引用
收藏
页码:646 / 654
页数:9
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