本文提出了一种用光纤作为延迟臂的新型速度干涉仪——光纤速度干涉仪,用以测量速度随时间的变化。选取不同长度的光纤,可测不同的速度范围。它扩展了测速范围,提高了测量精度。该系统提供两个相位差为90°的信号,因而提高了分辨率,并可鉴别加速与减速。

In this paper we report a new type of velocity interferometer, optical fiber velocity interferometer, which uses optical fiber as the delay arm. It can be used more conveniently and accurately to measure velocities in different ranges varing in time by choosing different lengths of optical fibe according to the range of velocity and required measurement accuracy. This system provides two signals with phase difference of 90°, therefore, it gives higher resolving power and can distinguish acceleration or decelertion.