1987•Acta Optica SinicaRequires access
Optical fiber velocity interferometer
Tan Shi, Xiaodong Xie
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Abstract
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 deceleration.