摘要
利用光谱形状复用技术和模拟退火算法对光栅光谱重叠现象进行了理论分析和实验研究,分别研究了2个、3个和4个光栅光谱部分重叠和完全重叠时的区分识别情况。研究结果表明,当光纤光栅反射谱发生部分重叠或完全重叠时,可以利用模拟退火算法实现光栅的区分识别,且不多于4个光栅的光谱重叠能够被很好地区分识别,波长识别误差小于10 pm,实验结果与理论能够很好地吻合。此方法为大规模光纤光栅传感网络中光栅复用解调提供了一种可供选择的解决方案。
The spectral shape multiplexing technology and the simulated annealing algorithm are used to theoretically analyze and experimentally study on the spectral overlap of fiber Bragg gratings（FBGs）. When the spectra of FBGs are fully or partially overlapped, the recognition of 2, 3 and 4 gratings multiplexing is discussed. In this research, no more than 4 spectra overlapped gratings are well distinguished and their recognition accuracies are within 10 pm, which are in agreement with the theory. The method provides an alternative solution for the multiplexing demodulation of fiber grating sensing network in large scale.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2015年第9期82-88,共7页
Acta Optica Sinica
基金
国家自然科学基金(61275093
61205084)
河北省自然科学基金(F2015203277)
秦皇岛市科学技术与发展计划项目(201502A035)
关键词
光纤光栅
光谱形状复用
模拟退火算法
复用网络
解调
fiber grating
spectral shape multiplexing
simulated annealing algorithm
multiplexing network
demodulation
