边孔光纤光栅温度降敏特性研究  

Experimental and Theoretical Study on Thermal Insensitivity of Fiber Bragg Grating Written in Side-Hole Fiber

作　　者：孙崇峰[1] 李智忠[1] 胡永明[1] 杨华勇[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073

出　　处：《光电子．激光》2005年第9期1032-1035,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60377029)

摘　　要：对边孔光纤光栅(FBG)光谱的双峰间距的温度敏感特性进行理论分析和实验研究.提出了边孔光纤(SHF)的简化分析方法,计算出了SHF双折射的温度系数为3.17×10-8/℃.在30～80 ℃的温度特性实验中,得到SHF双折射的温度系数为3.55×10-8/℃,与理论分析结果相吻合,验证了理论分析的合理性,FBG双峰间距的温度敏感系数为-0.054 Pm/℃,验证边孔FBG双峰间距对温度不敏感.Theoretic and exper spectrum imental analyses are performed on thermal sensitivity of the space between the double spectra apexes of fiber Bragg grating（FBG） written in side-hole fiber（SHF）, A simplified analytic method of SHF is proposed, And the calculated thermal coefficient of birefringence of SHF is 3. 17×10^-8/℃, During the experiment while the temperature changes from 30 to 80 13 ,the measured thermal coefficient of birefringence of SHF is 3. 55×10^-8/℃ that is in good accord with the theoretical results, which proves the theoretic analysis reasonable. The measured thermal sensitivity of the space between the double apexes of FBG in SHF is -0. 054 pm/℃ ,which proves that the space between the double apexes of FBG in SHF is insensitive to temperature, The work is valuable to the research on the sensor insensitive to temperature.

关 键 词：光纤光栅(FBG) 边孔光纤 热应力 温度降敏 

分 类 号：TN253[电子电信—物理电子学]