Patent ID: 8421493

Claim:
Process for characterising an electric signal ( 10 ), comprising: a propagation of a first light beam ( 18 ) through an electro-optic medium ( 17 ) in a first direction of propagation, at least one optical property of the medium varying when it is subjected to an electric field, the process being characterized in that it furthermore comprises: a propagation of a second light beam ( 19 ) through the electro-optic medium in a second direction of propagation different from the first direction, for each of the light beams, a measurement of a variation of an optical property of the light beam ( 18 ; 19 ) due to its propagation in the electro-optic medium 17 ), and a determination, from the measurements, of a direction of propagation ( 20 ) of the electric signal ( 10 ) subjecting the electro-optic medium ( 17 ) to an electric field.