一、引言光纤传感器是最近几年才发展起来的一项新技术,它具有灵敏度高、抗电磁干扰、耐腐蚀、可挠曲、适宜在危险场合使用等独特的优点,受到了世界各国的广泛重视。二、光纤传感器的工作原理及主要分类光纤传感器是新型光电子学/导波技术的一个分支。光纤传感器通常由光纤、光源和光电检测器三部分组成。其工作原理是利用光纤或与光纤相连接的某些敏感器件在受到被测对象的作用后,光纤传输的光参数产生与被测对象的状态相对应的变化,从光参数的状态及其变化,即可获得被测物的状态及其改变的信息。以检测的光参数来分类,光纤传感器主要可分为强度型与相位型两种。在光纤传感器 I. INTRODUCTION Optical fiber sensor is a new technology developed only in recent years. It has the unique advantages of high sensitivity, anti-electromagnetic interference, corrosion-resistant, flexible and suitable for use in dangerous places. It has been widely used in many countries in the world Pay attention. Second, the working principle of optical fiber sensors and the main classification Optical fiber sensor is a new branch of optoelectronics / guided wave technology. Fiber optic sensor usually consists of optical fiber, light source and photodetector three parts. Its working principle is to use optical fiber or fiber-optic connection of certain sensitive devices subject to the role of the measured object, the fiber optic transmission of the optical parameters and the state of the measured object corresponding changes, from the optical parameters of the state and its changes , You can get the state of the measured object and its change information. To detect the optical parameters to classify, optical fiber sensor can be divided into two types of intensity and phase. In fiber optic sensor