Optical method and system for controlling an electrical cable

The optical method for the monitoring of an electrical conductor (2,21) entails feeding at least one light signal (LS) into fiber Bragg grating sensors (S1-S3), in each of which the light signal is altered in dependence upon a deformation induced through the mechanical loading of the respective conductor sections (L1-L3). A corresponding measurement value is allocated to the deformation-conditioned changes of the light signal and an average value determined from which is established the force acting externally on all conductor sections and creating the mechanical loading. An independent claim is included for an optical system for the monitoring of an electrical conductor by the application of the aforesaid method.