基于强度调制型啁啾脉冲压缩法的分布式喇曼温度传感器  

Raman distributed temperature sensor based on intensity modulated chirped pulse compression

作　　者：周铂承 樊昕昱 何祖源 ZHOU Bocheng;FAN Xinyu;HE Zuyuan(State Key Laboratory of Advanced Optical Communication Systems and Networks,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学区域光纤通信网与新型光通信系统国家重点实验室,上海200240

出　　处：《光通信技术》2021年第10期30-33,共4页Optical Communication Technology

基　　金：国家重点研发计划(2017YFB0405500)资助;国家自然科学基金(61775132、61735015、61620106015)资助。

摘　　要：为实现低成本、长距离的高精度分布式温度测量,提升分布式喇曼光纤温度传感器(RDTS)系统的性价比,提出了一种基于强度调制型啁啾脉冲压缩技术的新型RDTS系统,描述了新型系统的结构及相应信号调制/解调方法,并通过实验验证了系统性能。实验结果表明:所提出的新型RDTS系统在35 km的传感距离获得了1.6 m的空间分辨率和1.8℃的温度分辨率,解决了传统RDTS系统中空间分辨率与温度分辨率相互制约的问题。In order to achieve low-cost,long-distance high-precision distributed temperature measurement and improve the cost-effectiveness of the Raman distributed temperature sensor(RDTS)system,a novel Raman distributed temperature sensor based on chirp pulse compression technique using intensity-modulated is proposed.The system structure and corresponding signal modulation and demodulation methods are described,and the performance of the system is verified by experiments.The experimental results show that the new RDTS system achieves 1.6 m spatial resolution and 1.8℃ temperature resolution at 35 km sensing distance,which solves the problem of mutual restriction between spatial resolution and temperature resolution in traditional RDTS system.

关 键 词：强度调制 脉冲压缩技术 分布式喇曼光纤温度传感器 

分 类 号：TN256[电子电信—物理电子学]