基于元启发算法的FBG解调方法  

FBG demodulation method based on meta-heuristic algorithm

作　　者：童国炜 刘斌辉 黄林轶[1,2] 陈超英 徐华伟 TONG Guowei;LIU Binhui;HUANG Linyi;CHEN Chaoying;XU Huawei(The 5th Electronic Research Institute,MIIT Guangzhou 510610,China;Key Laboratory of MIIT for Intelligent Products Testing and Reliability,Guangzhou 510610,China)

机构地区：[1]工业和信息化部电子第五研究所,广州510610 [2]智能产品质量评价与可靠性保障技术工业和信息化部重点实验室,广州510610

出　　处：《光通信技术》2021年第3期23-27,共5页Optical Communication Technology

基　　金：国家重点研发计划项目(2018YFF0214703)资助。

摘　　要：当光纤布喇格光栅(FBG)复用过多或带宽有限时会存在波长串扰问题,信号解调方法的性能会影响结果的精确性。提出一种基于元启发算法的中心波长解调方法,采用实际光谱与理论光谱差异的最小二乘函数作为优化目标,利用具有优异挖掘能力和探索能力的海洋捕食者算法进行求解。数值仿真结果和实验验证表明:所提算法是一种有效的、可行的波长解调方法,在实现对多光谱重叠识别的同时又可以保证解调精度。Wavelength crosstalk problem occurs when there are too much multiplexing in fiber Bragg gratings or the limited bandwidth,and the performance of signal demodulation method is related to the accuracy of result.In this paper,a novel central wavelength demodulation method based on meta-heuristic algorithm is proposed,the least-squares function of the discrepancy between the actual spectrum and the theoretical spectrum is employed as the optimization objective,the marine predators algorithm with excellent exploitation and exploration capabilities is developed to solve the problem.Numerical simulation and experiment verify that the proposed algorithm is an effective and feasible wavelength demodulation method,which can realize the recognition of multi-spectral overlap and ensure the demodulation accuracy.

关 键 词：布喇格光栅 波长串扰 中心波长 解调 海洋捕食者算法 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]