金属基底增敏的干涉型高温光纤传感器  

Interferometric High-Temperature Optical Fiber Sensor Sensitized by Metal Substrate

作　　者：刘洺 马成举[1] 李东明[1] 张贻歆 刘芊震 邬佶芮 胡辉 李霆宇 LIU Ming;MA Cheng-ju;LI Dong-ming;ZHANG Yi-xin;LIU Qian-zhen;WU Ji-rui;HU Hui;LI Ting-yu(School of Science,Xian Shiyou University,Xi'an 710065,China)

机构地区：[1]西安石油大学理学院,陕西西安710065

出　　处：《红外》2024年第1期27-35,共9页Infrared

基　　金：陕西省重点研发计划项目(2018GY-062);西安石油大学创新与实践能力培养项目(YCS21211084)。

摘　　要：为了实现对井下潜油电泵机组温度的实时监测,设计了一种由粗锥型单模--多模--单模(Coarse Cone Singlemode-Multimode-Singlemode,CCSMS)构成的马赫--曾德尔干涉(Mach-Zehnder Interferometer,MZI)型高温光纤传感器。该结构采用直接熔接的方法将单模光纤与多模光纤相熔接;接着通过调整熔接机的熔接参数,在单模光纤上制作出粗锥结构;最后将制备的结构嵌入铜基板的U型槽中,实现传感器的增敏封装。对封装后的传感器的温度响应特性进行了测试。实验结果表明,在40~250℃的温度范围内,该传感器实现了灵敏度为124.9 pm/℃的温度传感。对其稳定性和重复性进行了测试。结果表明,传感器的稳定性最大误差约为0.44%,重复性最大误差约为2.29 pm/℃。该传感器具有灵敏度高、重复性和稳定性好的特点,有望用于油气井下潜油电泵机组的温度监测。In order to achieve real-time monitoring of the temperature of the downhole submersible electric pump unit,a Mach-Zehnder interferometer(MZI)high-temperature fiber optic sensor composed of coarse cone singlemode-multimode-singlemode(CCSMS)was designed.The structure adopts a direct fusion method to fuse the single-mode fibers with the multi-mode fibers.Then,by adjusting the fusion parameters of the fusion splicer,a thick cone structure is fabricated on the singlemode fibers.Finally,the prepared structure is embedded in the U-shaped groove of the copper substrate to achieve the sensitization packaging of the sensor.The temperature response characteristics of the packaged sensor were tested.The experimental results show that the sensor achieves a temperature sensing sensitivity of 124.9 pm/C in the temperature range of 40℃to 250C.The stability and repeatability of the sensor were tested.The results show that the maximum stability error of the sensor is about 0.44%,and the maximum repeatability error is about 2.29 pm/C.The sensor has the characteristics of high sensitivity,good repeatability and stability,and is expected to be used for the temperature of the electric submersible pump unit in oil and gas wells.

关 键 词：光纤传感器 马赫--曾德尔干涉仪 单模光纤 温度 

分 类 号：TN253[电子电信—物理电子学]