摘要
光纤微弯传感器是一种强度调制式光纤传感器,它是利用光纤的微弯损耗效应来测量压力、温度、加速度、应变、流量等环境参量的变化。应用模式耦合理论分析了光纤微弯传感的基本原理,设计了两种不同结构参数的光纤微弯传感器,并且研究了传感器在载荷力的微扰下的输出特性和影响传感器灵敏度的关键因素。实验研究表明,所设计的微弯型压力传感器在一定的压力范围内具有较高的灵敏度、较好的线性和重复性。
The microbend fiber-optic sensor is an intensity modulation sensor. It utilized the microbend loss resulting from optical fiber bending to measure the change of environmental parameters, such as pressure, temperature, acceleration, strain and flow. This paper analyzed the principle of the microbend fiber-optic sensor based on mode coupling theory;designed two kinds of microbend fiber sensors;searched for the output characteristic of sensors by load change and the key affecting factors the sensor. The result of the experimental research indicats that the microbend sensors shows high sensitivity, good linearity and repeatability in certain operation range.
出处
《仪表技术与传感器》
CSCD
北大核心
2008年第1期4-5,37,共3页
Instrument Technique and Sensor
基金
中国科学院创新基金(O63J311291)
安徽省科技厅“十一五”二期攻关资助项目(05022035)
关键词
光纤
微弯损耗
微弯调制器
压力
fiber-optic
microbend loss
microbend modulator
pressure
