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光实时延时技术与相控阵技术的融合,解决了传统相控阵雷达的瞬时大带宽受限和波束偏斜问题。文中给出了光实时延时技术的思想,讨论了光实时延时技术出现的背景。分析了应用于光实时延时技术中的光纤光栅的原理,着重讨论了均匀光纤光栅和线性啁啾光栅,分别给出了基于两种光纤光栅的光实时延时的技术方案,在此基础上,讨论了受控于应变和温度的光纤光栅在光实时延时技术中的应用。最后讨论了一些技术上存在的问题。
The integration of optical real-time delay technology and phased array technology solves the problem of instantaneous large bandwidth limitation and beam deflection of the traditional phased array radar. The paper gives the idea of real-time optical delay technology, and discusses the background of the real-time optical delay technology. The principle of FBG used in optical real-time delay technology is analyzed. The uniform FBG and linear chirped grating are emphatically discussed, and the technical solutions of real-time optical delay based on two kinds of FBG are given respectively , Discusses the application of fiber grating controlled by strain and temperature in real time delay technology. Finally, some technical problems are discussed.