用光纤光栅测量材料的热膨胀系数  

Measuring the Thermal Expansion Coefficients Using a Fiber Bragg Grating

作　　者：黄力群[1] 黄卫平 王里[1] 简水生[1] 

机构地区：[1]北京交通大学光波技术研究所,北京100044 [2].Dept.of Electrical and Computer Engineering,McMaster Univ

出　　处：《光电子．激光》2003年第10期1121-1123,共3页Journal of Optoelectronics·Laser

摘　　要：提出了一种利用光纤光栅来测量物质热膨胀系数的新方法。光纤光栅被固定在待测的样品上。测量的原理是基于光纤光栅的温度和应力特性。测量精度达到0.21×10-7/℃。而且测量过程非常简单和易于实现。A novel method was proposed to measure the thermal expansion coefficient by using a fiber grating attached on samples,and its principle is based on the temperature and stress characteristics of fiber gratings.A thermal expansion coefficient of 0.21×10-7/℃ is measured precisely,moreover,the method is easy to be implemented.

关 键 词：光纤光栅 热膨胀系数 测量原理 应力特性 

分 类 号：TB302[一般工业技术—材料科学与工程] TN253[电子电信—物理电子学]