摘要
采用连续波调频、波分复用技术提出了一种分布式FBG加速度测量系。针对分布式传感系统中的解调问题 ,设计了光学小波滤波器 ,有效地改善了非平衡、非线性光学信号的干扰 ,实现了光学波长绝对编码。该解调方法具有结构简单、扫描频率高、分辨率好、线性度好等优点。
A measurement system of vibration acceleration using distributed Fiber Bragg Grating is presented. The continuous wave modulation frequency and wavelength division multiplex technology are used in this system. The demodulation in distributed sensor system is a difficulty. The optical wavelet filter is designed to improve imbalanced and nonlinear optical signal efficiently and the optical wavelength absolute code is completed. This method has some advantages such as simple structure, high scan frequency, high resolution and good linearity.
出处
《传感技术学报》
CAS
CSCD
2004年第3期453-456,共4页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金资助 (6 0 3770 0 2 ) .
关键词
光学小波滤波
光纤光栅
解调
optical wavelet filtering
FBG
demodulation
