基于差分演化算法的FBG参数重构技术

FBG parameter reconstruction using differential evolution algorithm

文章提出了一种基于差分演化算法的光纤布拉格光栅(FBG)参数重构技术。基于均匀FBG的目标反射谱,可利用差分演化算法寻找一组光栅参数,根据这组参数计算得到的反射谱与目标反射谱偏差最小,该组参数即为重构的光纤光栅参数。数值实例表明,差分演化算法计算效率高,结果精确,是一种实用的参数重构方法。

A Differential Evolution （DE） algorithm is used to reconstruct the parameters of a uniform Fiber Bragg Grating （FBG） from the target reflection spectrum. Using the DE algorithm, a set of parameters, i. e. the fiber grating parameters for the reconstruction, are found, with which the calculated reflection spectrum shows the smallest deviation from the target spectrum. Numerical examples demonstrate that this is a highly efficient and accurate parameter reconstruction approach.