| 光纤布喇格光栅中心波长反向漂移的实验研究 |
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| 引用本文： | 魏昕,赵建林,周王民,樊帆.光纤布喇格光栅中心波长反向漂移的实验研究[J].光子学报,2009,38(1):78-81. |
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| 作者姓名： | 魏昕 赵建林 周王民 樊帆 |
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| 作者单位： | 西北工业大学,理学院,光信息科学与技术研究所,陕西省光信息技术重点实验室,西安,710072 |
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| 摘 要： | 以较大载荷轴向拉伸光纤布喇格光栅时，由于裸纤与涂覆层的弹性模量不同，会产生中心波长反向漂移现象，严重影响了传感器的准确度与测量范围.实验研究表明，在光纤固定端适当剥除一段涂覆层，然后将裸露部分与带涂覆层部分同时固定，可将光纤布喇格光栅的中心波长反方向漂移量控制在10－3 nm以内，同时可增大光纤布喇格光栅的有效调谐范围，并使其能够保持较好的线性度，实验结果与理论计算结果相符合.
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| 关 键 词： | 光纤布喇格光栅 反向漂移 应变传感器 |
| 收稿时间： | 2007-12-29 |
| 修稿时间： | 2008-03-26 |
Reverse Drift and Restraining of Centre-wavelength Reflected by Tensing fiber Bragg Grating |
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| WEI Xin,ZHAO Jian-lin,ZHOU Wang-min,Fan Fan.Reverse Drift and Restraining of Centre-wavelength Reflected by Tensing fiber Bragg Grating[J].Acta Photonica Sinica,2009,38(1):78-81. |
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| Authors: | WEI Xin ZHAO Jian-lin ZHOU Wang-min Fan Fan |
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| Institution: | Shaanxi Key Laboratory of Optical Information Technology;Institute of Optical Information Science and Technology;School of Science;Northwestern Polytechnical University;Xi'an 710072;China |
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| Abstract: | Because of the different elastic modulus between the core and the cladding of the fiber Bragg grating(FBG),a reverse drift of the center-wavelength reflected by a tensing FBG under high load will appear,which would seriously affect the measurement precision and range of a stress sensor based on FBG.The experiment results show that,by peeling off a small section of the cladding at the fixing end of the FBG and fixing both the bared section and part of the contiguous fiber with coating together,the reverse dr... |
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| Keywords: | Fiber Bragg grating (FBG) Reverse drift Stress sensor |
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