【摘要】 提出了一种反射式光纤测振系统。为克服环境、温度、光源输出、光路损耗等变化引起的漂移，它采用与反射面距离不等的两根接受光纤为参考通道，并利用两根接受光纤输出的信号比构成自补偿网络。本文给出该网络的理论依据，并介绍如何在电路设计上采用相应措施来提高稳定性和保证测试精度更多还原

【Abstract】 A reflective optic fiber vibration measuring system has been developed. In this system, the reference channel is composed of two pieces of receiving fiber with different distances to the reflective surface, and the ratio of the output signals of the two receiving fibers is used to compensate the drifts due to variations of the environment, temperature, light source output, optic path loss, etc.. The design consideratins of the system is described, and the methods to improve the stability and accuracy are introduced.更多还原