摘要
相比传统光纤传感技术布里渊动态光栅(BDG)具有多参量同时传感、测量精度高等优势。目前对BDG各项指标研究主要基于产生的不同类型BDG和在不同光纤介质中产生BDG。基于不同类型产生的不同BDG有啁啾、相移、随机和混沌四种,且混沌BDG实现高精度、高空间分辨率测量的同时,可以实现单个、稳定维持的动态光栅克服了多光栅的影响与其在分布式光纤传感中的限制。BDG产生介质有单模光纤、少模光纤、保偏光纤和光子晶体光纤。相比其他光纤,光子晶体光纤具有高双折射系数及能提高传感距离等特性。首先介绍了BDG的原理,并详细综述了混沌BDG和光子晶体光纤的应用与研究进展,同时介绍了BDG在分布式光纤传感中的多参量同时传感、高精度测量和高空间分辨的应用。最后,对该领域存在的一些问题进行了探讨。
Compared with the traditional optical fiber sensing technology,Brillouin dynamic grating(BDG)has the ad-vantages of multi-parameter simultaneous sensing and high measurement accuracy.At present,the research on BDG indica-tors is mainly based on the different types of BDG and BDG generated in different optical fiber media.There are four types of BDGs based on different types:chirp,phase shift,random and chaos.While chaotic BDG achieves high-precision and high-spatial resolution measurement,it can achieve a single,stable dynamic grating to overcome the influence of multiple gratings and its limitations in distributed optical fiber sensing.BDG generation media include single-mode fiber,few-mode fiber,polarization-maintaining fiber and photonic crystal fiber.Compared with other optical fibers,photonic crystal fiber has high bi-refringence coefficient and can improve the sensing distance.Firstly,the principle of BDG is introduced,and the application and research progress of chaotic BDG and photonic crystal fiber are reviewed in detail.At the same time,the application of BDG in multi-parameter simultaneous sensing,high-precision measurement and high spatial resolution in distributed optical fiber sensing is introduced.Finally,some problems in this field are discussed.
作者
陈飞飞
赵丽娟
陈思慧
肖宁
CHEN Feifei;ZHAO Lijuan;CHEN Sihui;XIAO Ning(School of Information Engineering,Nanning College of Technology,Guilin Guangxi 541006,China;School of Electrical and Electronic Engin.,North China Electric Power University,Baoding Hebei 071003,China)
出处
《光学技术》
北大核心
2025年第4期439-448,共10页
Optical Technique
基金
广西中青年能力提升项目(2024KY1758,2024KY1762)。
关键词
单个稳定维持动态光栅
布里渊动态光栅
混沌布里渊动态光栅
光子晶体光纤
高双折射系数
a single stable dynamic grating
Brillouin dynamic grating
chaotic Brillouin dynamic grating
photonic crystal fiber
high birefringence coefficient
