Demodulation of fiber Bragg grating sensors based on dynamic tuning of a multimode laser diode

Luis Alberto Ferreira; Envangelos Vasilios Diatzikis; Jose Luis Santos

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Demodulation of fiber Bragg grating sensors based on dynamic tuning of a multimode laser diode

机译：基于多模激光二极管动态调谐的光纤布拉格光栅传感器解调

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Dither demodulation of fiber Bragg grating sensors illuminated with multimode light from laser diodes is theoretically and experimentally investigated. Quasi-static temperature and strain sensitivities of 0.09 ℃/√Hz and 0.6 με/√Hz are obtained. We show that it is possible to measure small ac signals that lie outside the feedback loop bandwidth by using a synchronous detection referenced to twice the dither frequency. In this situation, dynamic strain sensitivity of 3.3 nε/√Hz is achieved.

机译：理论上和实验上研究了用激光二极管的多模光照射的光纤布拉格光栅传感器的抖动解调。得到的准静态温度和应变敏感度分别为0.09℃/√Hz和0.6με/√Hz。我们表明，通过使用参考两倍于抖动频率的同步检测，可以测量位于反馈环路带宽之外的小型交流信号。在这种情况下，动态应变灵敏度为3.3nε/√Hz。

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《Applied optics》 |1999年第22期|共9页
作者
Luis Alberto Ferreira; Envangelos Vasilios Diatzikis; Jose Luis Santos;
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中图分类光学;
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1. Demodulation of fiber Bragg grating sensors based on dynamic tuning of a multimode laser diode [J] . Luis Alberto Ferreira, Envangelos Vasilios Diatzikis, Jose Luis Santos Applied optics . 1999,第22期

机译：基于多模激光二极管动态调谐的光纤布拉格光栅传感器解调
2. Application of Multimode Laser Diodes in the Interrogation of Fiber Bragg Grating Sensors [J] . P. J. Moreira, J. L. Santos Optical fiber technology . 2000,第4期

机译：多模激光二极管在光纤布拉格光栅传感器询问中的应用
3. Frequency-modulated multimode laser diode for fiber Bragg grating sensors [J] . Ferreira L.A., Diatzikis E.V. Journal of Lightwave Technology . 1998,第9期

机译：光纤布拉格光栅传感器的调频多模激光二极管
4. Multimode fiber Bragg grating based fiber lasers and optical sensors [C] . Su, L., Lu, . 2005

机译：基于多模光纤布拉格光栅的光纤激光器和光学传感器
5. Strain sensing with a laser diode tuned by a fiber Bragg grating. [D] . Berger, Shai. 1996

机译：通过光纤布拉格光栅调谐的激光二极管进行应变感应。
6. Wavelet-Based Demodulation of Multimode Etched Fiber Bragg Grating Refractive Index Sensor [O] . Takhmina Ayupova, Marzhan Sypabekova, Carlo Molardi, 2019

机译：多模蚀刻光纤光栅折射率传感器的基于小波的解调
7. Research on the Characteristics of the Fiber Laser Based on Distributed Feedback Bragg Grating and the Demodulation Method of Its Wavelength Shift in Sensor Application [O] . 王劲文 2007

机译：基于分布式反馈布拉格光栅的光纤激光器的特性及其在传感器应用中波长漂移的解调方法研究
8. Demodulation System for Fiber Optic Bragg Grating Dynamic Pressure Sensing [R] . Lekki, John D., Adamovsky, Grigory, Floyd, Bertram 2001

机译：光纤布拉格光栅动态压力传感解调系统

Demodulation of fiber Bragg grating sensors based on dynamic tuning of a multimode laser diode

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