Fiber grating sensor array interrogation with time-delayed sampling of a wavelength-scanned fiber laser

被引：25
|
作者：
Jin, ZX [1 ]
Song, MH [1 ]
机构：
[1] Chonbuk Natl Univ, Div Elect & Informat Engn, Chonju 561756, South Korea
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2004年 / 16卷 / 08期
关键词：
Fabry-Perot (FP) filter; fiber Bragg grating (FBG); fiber laser; strain sensor; time-delayed sampling;
D O I：
10.1109/LPT.2004.831303
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：
A novel method for fiber Bragg grating (FBG) sensor array interrogation based on a wavelength-scanned fiber laser is presented. The wavelength of the scanning fiber laser is monitored by time-delayed sampling and assigned to return peaks as Bragg wavelengths of the sensor gratings. From experiments with an array of four FBG sensors, the scheme showed the same measurement results using different wavelength scanning waveforms, which verified that this scheme demodulated the sensor signals linearly, regardless of nonlinearities in the wavelength-tuning mechanism. Overall, similar to20 pm of measurement accuracy was obtained which could have been greatly enhanced with faster phase modulation.
引用
收藏
页码：1924 / 1926
页数：3
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