Apparatus for acoustic detection of particles in a flow using a fibre optic interferometer

摘要

Fiber optic particle detector for measurements in a fluid flow, comprising an optical fiber ( 2,3,12 ) being acoustically coupled to a mechanical element ( 11,13,14 ) adapted to be acoustically coupled to the flow, a fiber optic interferometer ( 54,56 ) and a light source ( 12,51,55 ) providing light in said optical fiber.