FIBER-OPTIC DEVICE FOR MEASUREMENT OF PULSED CURRENTS Russian patent published in 2005 - IPC

FIELD: measurement of current single pulses at the duration in the nanosecond range.

SUBSTANCE: the proposed device consists of a magneto-optic transducer, connected to the input of a measuring computing unit. The magneto-optic transducer contains a source of linearly polarized light radiation. The source is connected to the input of a polarization-sensitive photodetector through a fiber-optic light guide from an magneto-optical material. The optic-optic light guide consists of n sensitive elements in the form of equal arcs, producing the closed contour and embracing the lead with a measured current. The sensitive elements are connected each with other by means at (n-1) fiber-optic delay lines. The optic-optic delay lines are fabricated in the form of coils with the turns from the same optic-optic light guide. The coil turn planes are perpendicular to the lines of force of the magnetic field, produced by a measured current.

EFFECT: the design of the optic-optic device permits to use only one magneto-optical transducer as distinct from the nearest analog.

2 dwg