With the advent of the Internet of Things revolution, the world began to enter the information age. In the process of using information, the first thing to be solved is to obtain accurate and reliable information, and the linear potentiometer position sensor is to obtain the natural and the production of information in the field of the main ways and means, it has been a great development. At present, the sensor is moving in a sensitive, accurate, adaptable, compact and intelligent direction. In this process, the fiber-optic sensor sensor family, a new member of favor.