基于相位敏感光时域反射仪的高灵敏高频振动信号探测  

Highly sensitive high-frequency vibration detection based onΦ-OTDR

作　　者：王延 陈真 刘智超 刘奂奂[2] 庞拂飞[2] WANG Yan;CHEN Zhen;LIU Zhichao;LIU Huanhuan;PANG Fufei(The 54th Research Institute of CETC,Shijiazhuang,050081 China;School of communication and information engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,石家庄050081 [2]上海大学通信与信息工程学院,上海200444

出　　处：《光通信技术》2020年第11期8-10,共3页Optical Communication Technology

摘　　要：为提高对外界振动信号的探测灵敏度,设计了一种基于相位敏感光时域反射仪(Φ-OTDR)和3D打印传感器相结合的系统,该系统中的传感器由光纤缠绕在圆柱形弹性体组成,其圆柱形弹性体由3D打印的柔性材料制备。通过对100 m处20 kHz信号的探测,证明了集成弹性体的3D打印传感器对高频振动信号的探测具有增敏效果,解调出的信号频谱的幅度提升了8倍。In order to improve the detection sensitivity of the external vibration signal,a system based on the combination of phase sensitive optical time domain reflectometer(Φ-OTDR)and 3D printing sensor is designed.The sensor in the system is composed of optical fiber wound in a cylindrical elastomer,which is made of 3D printing flexible material.By detecting the 20 kHz signal at 100 m,it is proved that the 3D printing sensor with integrated elastomer has the effect of enhancing sensitivity for the detection of high frequency vibration signal,and the amplitude of the demodulated signal spectrum is increased by 8 times.

关 键 词：相敏光时域反射仪 3D打印 振动探测 光纤传感 弹性体 

分 类 号：TN252[电子电信—物理电子学]