一种光纤波长解调光谱峰值定位算法  

A peak location algorithm for the demodulation spectrum of fiber Bragg grating

作　　者：申雅峰[1] 胡春艳[1] 张磊[1] 

机构地区：[1]中航工业北京长城计量测试技术研究所,北京100095

出　　处：《光学技术》2014年第1期53-57,共5页Optical Technique

基　　金：航空技术创新基金(2011F30404)

摘　　要：提出一种基于低复杂度Levenberg-Marquarat的光纤波长解调光谱峰值定位算法,该算法相对于现有的功率加权算法和高斯-多项式拟合算法,具有高精度定位光谱峰值的优点,实验结果表明,在高性噪比情况下,采用基于低复杂度Levenberg-Marquarat的峰值定位算法可以有效地抵制噪声提高解调精度,将光纤波长解调误差控制在1pm内。通过简化后的数据处理过程,可以满足高速解调的要求,便于在数字电路上实现。A low complexity Levenberg-Marquarat algorithm for fiber grating wavelength demodulation algorithm is presented based on spectral peak location. Compared with the existing power weighted algorithm and the Gauss polynomi- al fitting algorithm, the algorithm has the advantage of high precision positioning spectral peak. Experiment results show that using the algorithm can effectively resist the noise and increase the demodulation precision in the high signal-to-noise ratio conditions. The wavelength demodulation error of fiber Bragg grating can he controlled within lpm. Through the simplified data processing, it can meet the requirements of high-speed demodulation and is easy to realize on the digital circuit.

关 键 词：应用光学 光纤光栅 峰值定位 波长解调 高速解调 

分 类 号：TN253[电子电信—物理电子学]