作　　者： ; ; ; ; ; ; ;

机构地区： 广东海洋大学理学院

出　　处： 《压电与声光》 2010年第2期191-194,共4页

摘　　要： 实验研究了侧向挤压作用下的光纤布喇格光栅(FBG)产生的应力双折射现象,提出了一种消除横向应力对温度交叉敏感的简单而又有效的方法,从理论和实验上进行了分析与验证。研究表明,对FBG施加侧向挤压产生的双折射导致普通光纤布喇格光栅存在两个满足布喇格条件的反射光谱,且双峰间距在100℃的温度范围内变化了0.055 nm,利用该双峰间距的变化可消除温度传感中横向应力对它的交叉敏感,实现对温敏系数的修正及温度的校正,实验中测得的原始温敏系数是0.013 8 nm/℃,对温敏系数修正了0.005 nm/℃,对变化的温度校正了4℃。 The stress birefringence of fiber Bragg grating（FBG） by the action of the lateral stress has been stud- ied in this paper. A simple effective method of eliminating the lateral stress cross-sensitivity to temperature was proposed, and it was theoretically studied and experimentally proofed. The results showed that the birefringence produced by the lateral stress applied to FBG resulted in two different reflective spectra meeting the Bragg condition in the common fiber Bragg grating and the space between the two reflective peaks has changed 0. 055 nm at the range of 100 C. The lateral stress cross-sensitivity to temperature can be eliminated by using the change of the space be- tween the two peaks to correct the temperature coefficient and the temperature. The measured temperature sensitivi- ty coefficient was 0. 013 8 nm/℃ ,and the temperature coefficient was corrected by 0. 005 nm/℃ and the tempera- ture change was corrected by 4℃.

关 键 词： 光纤布喇格光栅 应力双折射 温度传感 交叉敏感

领　　域： [电子电信]