摘要
针对光纤布拉格光栅(FBG)复用传感解调技术中光纤上复用光栅的数量问题,基于F-P滤波器,提出用长信号快速相关算法来检测波长移位的解调方法。通过MATLAB仿真和具体实验证明:该方法在实际中可以解决两波形部分(<40%)重叠的问题,进而在光谱宽度、测量范围和光栅谱宽一定的条件下,使复用光栅的数量大大增加,同时测量精度可达到1 pm。
To increase the numbers of multiplexed gratings on a fiber of fiber Bragg grating （FBG） multiplexed sensing demodulation technique,a demodulation scheme to detect the wavelength shift,which is based on F-P tunable filter and uses the long signal fast correlative algorithm,is presented. And it has been proved by MATLAB simulation and exact experiments： this scheme can solve part （〈40 % ） overlapping of two waveforms, then,when the spectral width, measuring scope and grating spectral width are fixed, the number of multiplexed gratings increases greatly,and the precision reaches 1 pm.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2006年第11期1326-1329,共4页
Journal of Optoelectronics·Laser
基金
黑龙江省自然科学基金资助项目(F0315)
