摘要
针对光纤布拉格光栅在复用时,由于光源带宽有限可能会导致光谱重叠,进而影响解调精度的问题,提出一种新型的光纤布拉格光栅重叠谱解调方法。该方法基于改进的蝠鲼觅食优化算法,利用Tent混沌映射优化初始种群多样性,采用差分进化算法优化个体位置更新策略,解决了蝠鲼觅食优化算法易陷入局部最优的问题。对多个光纤布拉格光栅重叠谱进行仿真与实验,结果表明:所提方法能够准确解调出重叠光谱的中心波长,即使在光谱畸变的情况下,误差最大不超过0.01 nm;同时有效降低了陷入局部最优的概率,提高了算法的稳定性、可靠性。
When the fiber Bragg grating is multiplexing,the limited source bandwidth may cause spectral overlap,then affects the accuracy of demodulation.A new type of fiber Bragg grating overlapping spectrum demodulation method is proposed.This method is based on an improved manta ray foraging optimization algorithm.The Tent chaotic map is used to optimize the initial population,and the differential evolution algorithm is used to optimize the individual location update strategy,which solves the problem that the manta ray foraging optimization algorithm is easy to fall into the local optimum.The simulation and experimental results of multiple fiber Bragg gratings overlapping spectrum show that the proposed method can accurately demodulate the center wavelength of the overlapping spectrum,even in the case of spectral distortion,the maximum error does not exceed 0.01 nm;at the same time,it effectively reduces the probability of fall into local optimum,and improves the stability and reliability of the algorithm.
作者
尚秋峰
杨根辈
SHANG Qiufeng;YANG Genbei(Department of Electronic and Communication Engineering,North China Electric Power University,Baoding,Hebei 071003,China;Hebei Key Laboratory of Power Internet of Things Technology,North China Electric Power University,Baoding,Hebei 071003,China;Baoding Key Laboratory of Optical Fiber Sensing and Optical Communication Technology,North China Electric Power University,Baoding,Hebei 071003,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2021年第9期63-71,共9页
Acta Photonica Sinica
基金
河北省自然科学基金(No.E2019502179)
国家自然科学基金(No.61775057)。
关键词
信息光学
光纤传感
蝠鲼觅食优化
光纤布拉格光栅
波分复用
波长解调
Information optics
Fiber optic sensor
Manta ray foraging optimization
Fiber Bragg grating
Wavelength division multiplexing
Wavelength demodulation
