摘要
对光纤光栅的调谐特性进行了简单的理论分析和具体的实验研究,利用微位移器(精度0.1μm)对光纤光栅进行纵向拉伸实验,实验中采用了先进的高分辨率光谱仪(分辨率为0.004nm)进行测试,实现了高精度的机械调谐和测试。实验结果比较理想,验证了理论分析的结果,两根光纤光栅分别实现调谐范围6.320nm和5.762nm,光纤光栅每拉伸约0.117%,Bragg波长位移1nm,同时发现,调谐前后的中心Bragg波长、反射率、透射谱几乎不变。
The tuning characteristics of the fiber Bragg gratings are analyzed based on simple theory and detailed experiment.Using a minute displacement unit(the precision of the machine is 01 μm),we realized a very high precision tuning.This device has the advantages of simple structure,easy realization and stable performance.The experimental result is perfect,which confirms the theory result.Two optical fiber grating can be tuned about 6.320nm and 5.762nm respectively.We also find that before and after tuning,the reflectivity,shape or bandwidth of the central Bragg wavelength peak almost keep unchanged.
出处
《压电与声光》
CSCD
北大核心
2003年第4期274-276,共3页
Piezoelectrics & Acoustooptics
关键词
光纤光栅
调谐
布喇格波长
optical fiber
Bragg grating
tuning
Bragg wavelength
