基于可调光延时线的射频信号长距离光纤稳相传输技术研究  

Research into Long Distance Optical Fiber Stable Phase Transmission Technology of RF Signal Based on The VODL

作　　者：赵明峰[1] 杨康[1] ZHAO Ming-feng;YANG Kang(The 723 Institute of CSIC,Yangzhou 225001,China)

机构地区：[1]中国船舶重工集团公司第七二三研究所,江苏扬州225101

出　　处：《舰船电子对抗》2021年第5期54-57,81,共5页Shipboard Electronic Countermeasure

摘　　要：射频信号的长距离光纤稳相传输在光学相控阵系统、分布式相参雷达以及无线通信上有着重要的作用,但是由于外界环境温度以及外界应力等变化,光纤的折射率等参数也随之发生变化,从而导致射频信号经过长距离光纤传输后,射频信号的相位也不稳定。针对这一现象,提出了一种基于可调光延时线的射频信号长距离光纤稳相传输方法,通过检测射频信号经过长距离光纤传输后的相位变化,进而控制可调光延时线改变射频信号在长距离光纤中的传输时间,最终实现射频信号的相位补偿。The long-distance optical fiber stable phase transmission of RF signal plays an important role in optical phased array system,distributed coherent radar and wireless communication.However,due to the changes of external environment temperature and external stress,the refractive index and other parameters of the optical fiber also change.As a result,the phase of RF signal is unstable after long-distance optical fiber transmission.In view of this phenomenon,this paper proposes a method of RF signal long-distance optical fiber stable phase transmission based on variable optical delay line (VODL).By detecting the phase change of RF signal after long-distance optical fiber transmission,and then controlling the VODL to change the transmission time of RF signal in long-distance optical fiber,the phase compensation of RF signal is finally realized.

关 键 词：可调光延时线 射频信号 稳相传输 

分 类 号：TN818[电子电信—信息与通信工程]