Interferometric device for electric current measurement using fibre optics

摘要: Dispositif de mesure courant comportant une fibre optique (1) enroulee autour du conducteur (2) dans lequel circule le a mesurer, source laser (3), des moyens separation rayonnement (4) emis par la vers les deux extremites (5,6) et recombinaison emergeant ces extremites, un circuit (8) parcouru reference reglable (9), dispositif detection (10) fournissant signal caracteristique interferences entre ondes fibre, etant ajuste pour que dephasage contrarotatives soit nul, ce alors proportionnel au mesurer circulant principal. Device for measuring current comprising an optical fiber wound around the conductor in which flows to be measured, means separating radiation emitted by towards two ends (5.6) of and recombination emerging from these ends, through adjustable device providing characteristic interference between waves fiber, is adjusted so that phase difference counter-rotating zero, this then being proportional flowing measure main driver. Application precise courants grandes intensites conditions d'environnement difficiles. accurate measurement large intensities difficult environmental conditions.