一种光纤光栅气压调谐方法  

A Method for Fiber Bragg Grating Wavelength Tuning by Pressure

作　　者：胡曙阳[1] 何士雅[1] 赵启大[1,2] 田大伟[1] 邵晴[1] 王智群[1] 董波[1] 

机构地区：[1]北京工业大学应用数理学院 [2]南开大学现代光学研究所,天津300071

出　　处：《北京工业大学学报》2004年第4期515-518,共4页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(69977006)北京市教委基金资助项目(00KG040)教育部博士点基金资助项目(20020055036)天津市自然科学基金重点资助项目(013800511).

摘　　要：为了便于对光纤光栅的布喇格波长进行调谐,设计了一种光纤光栅气压调谐方法.通过改变密封气体的压力改变光栅的应变,从而调谐光栅的布喇格波长.推导了调谐所用公式,布喇格波长漂移与调谐量近似成线性关系.实验获得了5.4 nm的调谐范围,实验结果和理论符合很好,线性拟合度分别为0.998 2和0.998 9.A new method for fiber Bragg grating wavelength tuning is reported. The Bragg wavelength is tuned by the change of strain induced by tuning the pressure of closed gas with two different ways. The relation between wavelength and tuning variable is approximately linear and the experimental results is in good consistence with theory. The wavelength range of linear tuning is about 5.4 nm, and the linear consistency R2=0.998 2 and 0.998 9 respectly. This method has the advantages of simple structure and easy realization.

关 键 词：光纤光栅 调谐 压力 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]