Forsyth David I, Wade Scott A, Sun Tong, Chen Xiaomei, Grattan Kenneth T V
School of Engineering, City University, London, United Kingdom.
Appl Opt. 2002 Nov 1;41(31):6585-92. doi: 10.1364/ao.41.006585.
We have constructed fiber-optic sensors to measure temperature and strain by combining the properties of fiber Bragg gratings with the fluorescent lifetimes of various doped fibers. Sensors have been made with the fiber Bragg grating written directly into the doped fiber to ensure the collocation of the strain and temperature measurement points. Results are compared with those obtained previously from a Bragg grating written into standard photosensitive fiber spliced to doped fiber. Standard deviation errors of 7 microepsilon and 0.8 degrees C have been obtained for strain and temperature ranges of up to 1860 microepsilon and 120 degrees C, respectively.
我们通过将光纤布拉格光栅的特性与各种掺杂光纤的荧光寿命相结合，构建了用于测量温度和应变的光纤传感器。已制作出将光纤布拉格光栅直接写入掺杂光纤的传感器，以确保应变和温度测量点的配置。将结果与之前从写入拼接至掺杂光纤的标准光敏光纤中的布拉格光栅所获得的结果进行比较。对于高达1860微应变和120摄氏度的应变和温度范围，分别获得了7微应变和0.8摄氏度的标准偏差误差。
