Demodulation scheme for fiber Bragg grating sensors based on active control of the spectral response of a wavelength division multiplexer

Francisco M. Araújo; Luís A. Ferreira; José L. Santos

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Demodulation scheme for fiber Bragg grating sensors based on active control of the spectral response of a wavelength division multiplexer

机译：基于波分复用器频谱响应的主动控制的光纤布拉格光栅传感器解调方案

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We present a closed-loop technique for measuring wavelength shifts associated with fiber Bragg gratings by using a fused biconical wavelength division multiplexer (WDM). The spectral response of the WDM is actively tuned by stretching of the coupling region to maintain a fixed coupling ratio at the reflected Bragg wavelength. The closed-loop operation allows sensitivities usually associated with a highly selective WDM to be obtained without compromising the measurement range. A simple theoretical model is presented together with experimental results for temperature and strain measurements. # 1998 Optical Society of America OCIS codes: 060.1810, 060.2340, 060.2370.

机译：我们提出了一种通过使用熔融双锥波分复用器（WDM）测量与光纤布拉格光栅相关的波长偏移的闭环技术。 WDM的光谱响应通过扩展耦合区域来主动调整，以在反射的布拉格波长下保持固定的耦合比。闭环操作可以在不影响测量范围的情况下获得通常与高选择性WDM相关的灵敏度。提出了一个简单的理论模型以及用于温度和应变测量的实验结果。＃1998美国光学学会OCIS代码：060.1810、060.2340、060.2370。

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《Applied optics》 |1998年第36期|共7页
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Francisco M. Araújo; Luís A. Ferreira; José L. Santos;
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1. Demodulation scheme for fiber Bragg grating sensors based on active control of the spectral response of a wavelength division multiplexer [J] . Araujo FM., Santos JL., Farahi F., Applied optics . 1998,第34期

机译：基于波分复用器频谱响应的主动控制的光纤布拉格光栅传感器解调方案
2. Fiber-optic Fabry-Perot sensors based on a combination of spatial-frequency division multiplexing and wavelength division multiplexing formed by chirped fiber Bragg grating pairs [J] . Y. J. Rao, Z. L. Ran, C. X. Zhou Applied Optics . 2006,第23期

机译：基于chi光纤布拉格光栅对形成的空间频分复用和波分复用相结合的光纤法布里-珀罗传感器
3. Fiber-optic Fabry-Perot sensors based on a combination of spatial-frequency division multiplexing and wavelength division multiplexing formed by chirped fiber Bragg grating pairs [J] . Y. J. Rao, Z. L. Ran, C. X. Zhou Applied optics . 2006,第23期

机译：基于chi光纤布拉格光栅对形成的空间频分复用和波分复用相结合的光纤法布里-珀罗传感器
4. Enhanced fiber Bragg grating sensor demodulation technique using cascade wavelength division multiplex couplers [C] . Keke Tian, Songwei Zhang, Fang Li, Optoelectronic Devices and Integration. . 2011

机译：使用级联波分复用耦合器的增强型光纤布拉格光栅传感器解调技术
5. Free spectral range matched interrogration technique for wavelength demodulation of fiber Bragg grating sensors [D] . Rahimi, Somayyeh 2009

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6. Wavelet-Based Demodulation of Multimode Etched Fiber Bragg Grating Refractive Index Sensor [O] . Takhmina Ayupova, Marzhan Sypabekova, Carlo Molardi, 2019

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7. Tunable Laser based Carbon Composite Strain Sensing System using Wavelength Division Multiplexed Fiber Bragg Grating Sensors [O] . Michael J. Connelly A, Senan Moloney A, Paul Butler B 2008

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Demodulation scheme for fiber Bragg grating sensors based on active control of the spectral response of a wavelength division multiplexer

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