An optical magnetometer toward measurements of low current magnitudes for high voltage power transmission applications

Abstract

We present a magnetometer, based on the Zeeman effect, developed to measure magnetic fields generated by currents leaking through the insulation layer of High-Voltage Direct Current cables. This electrically non-invasive measurement could help assess the insulation evolution, thereby delivering insight into the integrity of power transmission.

Damien Decq – SuperGrid Institute ; Anais Leproux – SuperGrid Institute ; Ludovic Boyer – SuperGrid Institute ; Marie-Hélène Luton – SuperGrid Institute

Presented at OPTIQUE BFC 2026.

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