DEVICE FOR MEASURING PARAMETERS OF PHASE ELEMENTS AND DISPERSION OF OPTICAL FIBRE AND METHOD OF MEASURING PARAMETERS OF PHASE ELEMENTS AND DISPERSION OF OPTICAL FIBRE Russian patent published in 2020 - IPC G01B9/02 

FIELD: physics.

SUBSTANCE: group of inventions relates to a device and a method for measuring parameters of phase elements. Device for measuring optical properties of a test element selected from a group comprising phase elements and optical fibres, and the method performed by said device comprises a low-coherent light source connected to an input optical fibre connector which separates light from the low-coherence light source onto the reference arm and the measuring arm, detector configured to receive light from a support arm and a measuring arm, wherein at least one of the support and measuring arms comprises an optical element located on the linear translator, wherein said optical element is selected from a group comprising first and second collimators and a mirror. Device further has a transversely connected second optical fibre connector, a second light source delivering light for the support arm and the measuring arm, and a second detector receiving light from the support arm and the measuring arm, wherein the linear translator is a motorized linear translator, and the second light source is a coherent light source having a coherence length greater than or equal to the motorized linear translator movement range.

EFFECT: technical result is measurement of parameters of phase elements and dispersion of phase velocity of optical fibres.

10 cl, 9 dwg