9 February 2007 Experimental investigation on optical spectral deformation of embedded FBG sensors
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With the rapid development of Fiber Bragg Grating (FBG) sensing during recent years, FBG sensors are used in many fields; applications involving impact and vibration measurement require a high-speed interrogator. We have developed and prototyped a high-speed FBG interrogation system with a sampling rate up to 5 kHz. We show that FBG sensor optical spectral deformation may affect the performance of interrogators, such deformation can be introduced from non-uniform strain field or during FBG sensor packaging. This paper reports the experimental investigation of the impacts of the FBG spectral deformation on the interrogator accuracy, sensors with different optical spectral shapes are tested and analyzed, furthermore, we show how this high-speed interrogator is more tolerant to such deformation than peak tracking instruments.
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Xiaoxing Zhang, Xiaoxing Zhang, Jean-Joseph Max, Jean-Joseph Max, Xuenian Jiang, Xuenian Jiang, Lucy Yu, Lucy Yu, Hassan Kassi, Hassan Kassi, "Experimental investigation on optical spectral deformation of embedded FBG sensors", Proc. SPIE 6478, Photonics Packaging, Integration, and Interconnects VII, 647808 (9 February 2007); doi: 10.1117/12.700807; https://doi.org/10.1117/12.700807

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