摘要
为了更宽的波长解调范围(几十nm)和更高的解调精度(pm级),提出了一种采用可调谐光纤法布里珀罗(FFP)扫描滤波器实现波长扫描,结合高稳定性波长标准具和阈值比较寻峰算法降低迟滞效应解调误差的快速光纤光栅波长解调方法,并完成了相应的解调系统设计。通过对所提出的解调方法的可行性及解调系统的测量性能进行实验验证,实验结果表明:该方法可准确解调光纤光栅波长,解调系统的测量标准差为3.7pm。
In order to achieve a wider demodulation range(tens of nm)and higher demodulation accuracy(pm level),a fast fiber grating sensing wavelength demodulation method using Fiber-optic Fabry-Perot(FFP)scan filter is proposed to achieve wavelength scanning.The corresponding demodulation system design is completed by combining with high stability wavelength etalon and threshold comparison peak finding algorithm to reduce the hysteresis effect demodulation error.The feasibility of the proposed demodulation method and the measurement performance of the demodulation system were verified.Experiment results show that this method can accurately demodulate the wavelength of the fiber grating,and the measurement standard deviation of the demodulation system is 3.7 pm.
作者
方昕
FANG Xin(School of Electronic and Information Engineering,Ankang University,Ankang 725000,Shaanxi Province,China)
出处
《信息技术》
2021年第8期30-35,共6页
Information Technology
基金
陕西省教育厅项目(20JK0478)
校级青年基金项目(2019AYQJ01)
陕西省高等教育教学改革研究重点项目(19BZ057)
陕西省教育科学“十三五”规划项目(SGH20Y1347)
国家创新创业训练计划项目(S2020-11397012)
陕西省创新创业训练计划项目(S2020113-97081)。
关键词
光纤光栅解调技术
波长解调
FFP扫描滤波器
波长标准具
寻峰算法
fiber grating sensor demodulation
wavelength demodulation
FFP scanning filter
wavelength etalon
peak finding algorithm
