基于光纤光栅级联调谐技术的波长检测系统  

Study on wavelength detection system based on tunable filters with a novel multiplexing structure

作　　者：陈长勇[1] 乔学光[1] 贾振安[1] 郭团[1] 孙安[1] 

机构地区：[1]西安石油大学光纤传感实验室,西安710065

出　　处：《激光技术》2005年第2期150-152,共3页Laser Technology

基　　金：国家八六三计划资助项目(2002AA313150);国家自然科学基金资助项目 ( 69877025 );国家教育部科学技术重点资助项目(02190)

摘　　要：报道了一种检测光纤光栅传感器波长的新方案。实验系统采用新型的级联结构对电热调谐的光纤光栅滤波器进行复用,扫描分析传感信号光的峰值波长,同时用参考波长校准方法消除了电热调谐中的蠕动误差。结果表明,系统的检测范围可达23nm,波长分辨率为3. 1pm,应变测量分辨率为2. 56με。A nove l wavelength detection scheme is demonstrated for measuring the wavelength of fibe r grating sensors.A new cascaded structure is used in the experimental system mu ltiplex fiber grating tunable filters.The peak wavelength of sensing signal in s canning mode is analyzed.The calibration technique is adopted by the reference w avelength,which eliminates the error induced by wavelength creepage when the fi lters are tuned. The results show that the detection range reaches 23nm,the wave length resolution is 3.1pm,and the strain resolution is 2.56με.

关 键 词：光纤光栅 传感器 波分复用 波长检测 

分 类 号：TN253[电子电信—物理电子学]