内凹阶梯型反射式光纤传感器探头的设计  

Design of Concave Ladder Reflection Optical Fiber Sensing Probe

作　　者：郎国伟 杨瑞峰 郭晨霞[1,2] 张鹏 胡晨昊[1,2] 盖婷 

机构地区：[1]中北大学仪器与电子学院,山西太原030051 [2]中北大学,仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《仪表技术与传感器》2018年第2期4-6,82,共4页Instrument Technique and Sensor

基　　金：山西省重点研发项目(201703D121028-2);山西省科技攻关项目(2015031007-1)

摘　　要：设计了一种新型的内凹阶梯型反射式光纤传感器探头。基于出射端光场分布模型,建立输出调制特性的数学模型,结合影响传感器特性的主要参数,对两根接收光纤与发送光纤端面之间的错位量a、b进行了仿真计算和分析,得出了系统的优化设计参数。最后与平面型探头进行对比分析,该探头不仅具有良好的光学补偿作用,而且扩大了量程,提高了测量的灵敏度。A new type of concave ladder optical fiber sensing probe was designed.A mathematical model of the output modu-lation function was established based on the output distribution model.Combined with the main parameters that affect the charac-teristics of the sensor,the misalignment amount a and b between the two receiving fiber and the transmitting fiber were simulatedand analyzed,and the optimal design parameters of the system were obtained.Finally,compared with the planar probe,the newprobe not only has a good optical compensation,but also expand the measurement range,improving the measurement sensitivity.

关 键 词：内凹阶梯型 调制函数 优化设计 补偿 灵敏度 量程 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]