Title :
Interferometric fiber-optic Doppler velocimeter with high-dynamic range
Author :
Fabiny, L. ; Kersey, A.D.
Author_Institution :
Div. of Opt. Sci., Naval Res. Lab., Washington, DC, USA
Abstract :
We describe and demonstrate a fiber-optic laser Doppler velocity sensor which is based on interferometric processing of a wavelength encoded signal. The range of the fiber-optic velocimeter is scalable from less than 1 mm/s up to 1000 m/s through changes in the optical path imbalance in the fiber-optic interferometer. A dynamic velocity resolution of <80 μm/s//spl radic/Hz is demonstrated.
Keywords :
Doppler measurement; fibre optic sensors; laser velocimetry; light interferometers; dynamic velocity resolution; fiber-optic interferometer; fiber-optic laser Doppler velocity sensor; fiber-optic velocimeter; high-dynamic range; interferometric fiber-optic Doppler velocimeter; interferometric processing; optical path imbalance; wavelength encoded signal; Frequency; Motion measurement; Optical distortion; Optical fiber sensors; Optical interferometry; Optical mixing; Optical sensors; Phase shifting interferometry; Velocity measurement; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
