摘要
基于光纤光栅调谐技术,提出了动态滤波扫描、时域同步处理的新型波长检测方案。采用执行机构与监测单元相分离的光纤光栅调谐装置,运用同步滤波和处理的方法,并利用微机多通道采集技术实现了低成本、高精度的光纤光栅传感解调系统,测试表明该系统的波长分辨率为3pm,应变测量分辨率为2.55μ,扫描时间小于200ms,波长检测范围可达9.16nm。
A novel wavelength detection scheme is developed with the technique of dynamic filtering in scanning mode and of synchronous process in time domain,which is based on a tunable fiber grating.The system adopts a fiber grating tuning apparatus with separate tuning executor and wavelength monitor,applies the method of synchronous filtering and process,and achieve high performance with low cost as a demodulator of fiber grating sensors.It wavelength resolution is 3 pm,the measured strain resolution is 2.55 μ,its measurable range reaches 9.16 nm,and scanning time is less than 200 ms.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2004年第7期778-781,共4页
Journal of Optoelectronics·Laser
基金
国家863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项目(02190)
