摘要
研究了在自由和约束 2种状态下光纤 Bragg光栅 ( Fiber Bragg Gratting,FBG)的温度特性 ,分析了被测物体的热膨胀系数对 FBG中心波长值移位量的影响 ,推导了 FBG在约束状态下的温度特性方程和温度灵敏系数公式 ,测试了 FBG在自由和约束 2种状态下的波长温度效应 ,实验结果与理论分析吻合得很好 ,这些为实际工程应用提供了依据。
The paper studies the temperature characteristic for restriction & free FBG, and analyses that the thermal expansion coefficient of measured body effects on wavelength of FBG, and obtains the equation about temperature characteristic function and temperature sensitive coefficient, and tests the temperature effect of wavelength of FBG. It shows that experiment conclusion coincides with theoretical analysis well. These provide the basis for engineering application.
出处
《武汉理工大学学报》
CAS
CSCD
2003年第9期11-14,共4页
Journal of Wuhan University of Technology
基金
国家自然科学资金 ( 5 0 2 380 4 0)
